Documentation icon คู่มือการใช้งานแม่แบบ[ดู] [แก้] [ประวัติ] [ล้างแคช]
For currency conversion into US dollars, see Template:To USD

แม่แบบ:Transwiki guide

Template {{convert}} calculates from one measurement unit to another one, and then presents the results formatted. For example:

{{convert|2|km|mi}} → 2 กิโลเมตร (1.2 ไมล์) (km entered, so converted into mile)
{{convert|7|mi|km}} → 7 ไมล์ (11 กิโลเมตร) (mi entered, so converted into km)

Numbers can be rounded, units can be abbreviated into symbols:

{{convert|2|km|mi|2|abbr=on}} → 2 กิโลเมตร (1.24 ไมล์)
{{convert|7|mi|km|2|abbr=on}} → 7 ไมล์ (11.27 กิโลเมตร)

Value ranges can be entered using |to|... or |-|...:

{{convert|2|to|5|km|mi}} → 2 to 5 kilometre (1.2 to 3.1 ไมล์)
{{convert|2|-|5|km|mi}} → 2–5 kilometre (1.2–3.1 ไมล์)

Combined effect example:

{{convert|2|-|5|km|mi|2|abbr=on}} → 2–5 กิโลเมตร (1.24–3.11 ไมล์)
{{convert|2|and|5|km|mi|sigfig=3|abbr=off}}แม่แบบ:Convert/and/AoffSoff (แม่แบบ:Convert/Dual/srnd)
See Help:Convert for more detailed, technical information

Units to convertแก้ไข

Enter units to convert from into:

  • {{convert|1|lb|kg}} → 1 ปอนด์ (0.45 กก.)
SI units generally accept prefixes, like "m" for milli (10−3), and "M" for mega (106)
For "per" units, use "/" (slash): kg/ha
For three-unit units, etc., see หมวดหมู่:Convert-like templates

Unit name or symbol (abbreviation): 1 pound or 1 lb?แก้ไข

By default, the first quantity shows the unit name, the second shows the symbol (or abbreviation):

  • {{convert|1|lb|kg}} → 1 ปอนด์ (0.45 กก.)

Using |abbr=in is the reverse behaviour to the default:

To abbreviate both or neither:

  • {{convert|1|lb|kg|abbr=on}} → 1 ปอนด์ (0.45 กก.)
  • {{convert|1|lb|kg|abbr=off}} → 1 ปอนด์ (0.45 กก.)

Convenience: {{cvt}} has |abbr=on by defaultแก้ไข

Template {{cvt}} is the same as {{convert}}, except that it has |abbr=on as the default behaviour. In {{cvt}}, all other options are available. So:

{{cvt|1|lb|kg}} → 1 lb (0.45 กg)

is equivalent to:

{{convert|1|lb|kg|abbr=on}} → 1 lb (0.45 กg)

Adjective: a 10-mile distanceแก้ไข

Use |adj=on to produce the adjectival (hyphenated) form:

  • A {{convert|10|mi|km|adj=on}} distance → A 10-mile (16 กิโลเมตร) distance.

Default behaviour, for comparison:

  • {{convert|10|mi|km}} to go → 10 ไมล์ (16 กิโลเมตร) to go.

Even with |abbr=on, as per Manual of Style, no hyphen is produced with unit symbols.

Rounding: 100 ft is 30 m or 30.5 m or 30.48 m?แก้ไข

See Help:Convert § Rounding for a more mathematical description of the rounding options

By definition, 100 ft equals แม่แบบ:Convert/LoffAoffDoutSoff. In practical use, it is common to round the calculated metric number. With that, there are several possibilities.

Default roundingแก้ไข

By {{Convert}} default, the conversion result will be rounded either to precision comparable to that of the input value (the number of digits after the decimal point—or the negative of the number of non-significant zeroes before the point—is increased by one if the conversion is a multiplication by a number between 0.02 and 0.2, remains the same if the factor is between 0.2 and 2, is decreased by 1 if it is between 2 and 20, and so on) or to two significant digits, whichever is more precise. An exception to this is rounding temperatures (see below).

Examples of rounding
Input Displays as Note
{{convert|123|ft|m|-1}} 123 ฟุต (40 เมตร)
{{convert|123|ft|m}} 123 ฟุต (37 เมตร) same output as with 0 (below)
{{convert|123|ft|m|0}} 123 ฟุต (37 เมตร)
{{convert|123|ft|m|1}} 123 ฟุต (37.5 เมตร)
{{convert|123|ft|m|2}} 123 ฟุต (37.49 เมตร) The more-exact value is 37.4904 m or so, which gets converted to 37 m if this parameter is not specified at all.
{{convert|500|ft|m|-1}} 500 ฟุต (150 เมตร)
{{convert|500|ft|m}} 500 ฟุต (150 เมตร) same output as with −1 (above), because the conversion factor is between 0.2 and 2 (hence, it should produce same double-zero precision (−2) as in the input value), but the conversion must produce two significant digits at a minimum (hence, a higher single-zero precision (−1) is used)
{{convert|500|ft|m|0}} 500 ฟุต (152 เมตร)
{{convert|500|ft|m|1}} 500 ฟุต (152.4 เมตร)
{{convert|500|ft|m|2}} 500 ฟุต (152.40 เมตร) exact value is 152.4 m
{{convert|500|ft|cm|-3}} 500 ฟุต (15,000 ซม.)
{{convert|500|ft|cm}} 500 ฟุต (15,000 ซม.) same output as with −3 (above), because the conversion factor is between 20 and 200 (hence, it should decrease input value's double-zero precision (−2) by 2), but the conversion must produce two significant digits at a minimum (hence, a higher triple-zero precision (−3) is used)
{{convert|500|ft|cm|0}} 500 ฟุต (15,240 ซม.)

Convert supports four types of rounding:

Round to a given precision: use a precision numberแก้ไข

Specify the desired precision with the fourth unnamed parameter (or third unnamed parameter if the "convert to" parameter is omitted; or fifth unnamed parameter if a range is specified; or fourth unnamed parameter again if a range is specified and the "convert to" parameter is omitted; needs to be replaced with a "precision" named parameter). The conversion is rounded off to the nearest multiple of 1/10 to the power of this number. For instance, if the result is 8621 and the round number is "-2", the result will be 8600. If the result is "234.0283043" and the round number is "0", the result will be 234.

Round to a given number of significant figures: |sigfig=แก้ไข

To specify the output number to be with n significant figures use |sigfig=<number>:

  • {{convert|1200|ft|m|sigfig=4}} → 1,200 ฟุต (365.8 เมตร)
  • {{convert|1200|ft|m|sigfig=3}} → 1,200 ฟุต (366 เมตร)
  • {{convert|1200|ft|m|sigfig=2}} → 1,200 ฟุต (370 เมตร)
  • {{convert|1200|ft|m|sigfig=1}} → 1,200 ฟุต (400 เมตร)

Default behaviour, for comparison:

  • {{convert|1200|ft|m}} → 1,200 ฟุต (370 เมตร)

Setting |sigfig= to a value less than 1 is meaningless:

  • {{convert|1200|ft|m|sigfig=0}} → 1,200 ฟุต (0 เมตร) Red XN

Round to a multiple of 5: 15, 20, 25, ...แก้ไข

Using |round=5 rounds the outcome to a multiple of 5.

  • {{convert|10|m|ft}} → 10 เมตร (33 ฟุต)
  • {{convert|10|m|ft|round=5}} → 10 เมตร (33 ฟุต)

Similar: using |round=25 rounds the outcome to a multiple of 25.

  • {{convert|10|m|ft}} → 10 เมตร (33 ฟุต)
  • {{convert|10|m|ft|round=25}} → 10 เมตร (33 ฟุต)

Default behaviour, for comparison:

  • {{convert|10|m|ft|sigfig=4}} → 10 เมตร (32.81 ฟุต)

In a range, one can round each value individually to the default. Use |round=each:

  • {{convert|10 x 200 x 3000|m|ft}} → 10 x 200 x 3,000 เมตร (ข้อผิดพลาดนิพจน์: "x" เป็นคำที่ไม่รู้จัก ฟุต)
  • {{convert|10 x 200 x 3000|m|ft|round=each}} → 10 x 200 x 3,000 เมตร (ข้อผิดพลาดนิพจน์: "x" เป็นคำที่ไม่รู้จัก ฟุต)

Round to a multiple of a given fraction: 2 3/16 inchแก้ไข

Specify the desired denominator using |frac=<some positive integer>. (Denominator is the below-the-slash number, for example the 3 in 1/3).

  • {{convert|5.56|cm|in|frac=16}} → 5.56 ซม. (2.19 นิ้ว)
  • {{convert|8|cm|in|frac=4}} → 8 ซม. (3.1 นิ้ว)

The fraction is reduced when possible:

  • {{convert|8|cm|in|frac=100}} → 8 ซม. (3.1 นิ้ว)

Default behaviour uses decimal notation:

  • {{convert|5.56|cm|in}} → 5.56 ซม. (2.19 นิ้ว)

Rounding temperatures: °C, °F and Kแก้ไข

In temperatures, the conversion will be rounded either to the precision comparable to that of the input value or to that which would give three significant figures when expressed in kelvins, whichever is more precise.

  1. สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate
  2. สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate
  3. สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate
  4. สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate
  5. สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate
  6. สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate

The precision of the input number in example (1) is one digit, but the precision of its Kelvins expression is three, so the precision of the Fahrenheit conversion is made three (made 180...) . (1) and (2) seem to belie the fact that a แม่แบบ:Convert/C-change, and make the 32 degrees difference shown in (1) begin to seem off somehow. Result (1) seems off until you set the significant figures yourself with |sigfig=:

สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate

or you set the precision positionally, relative to the decimal point (zero being at the decimal point):

สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate

The precision of the input number in example (2) is six, so the precision of the Fahrenheit output is, whereas before, Kelvins had determined it to be three. Examples (3) and (4) show how this can be hidden and generate questions, but it occurs there because the Kelvins conversion generated two fractional parts. (Before it was the input number that generated the fractional part.) In example (3) the three input digits converted into five significant output digits because of the two digits after the decimal point, generated by the Kelvins conversion. This happened again in (5), but in (6) decimal fractions were neither given as input nor induced by the Kelvins conversion.

Rounding inputแก้ไข

There is limited support for rounding the displayed input number. The rounding takes place after conversion, so the output is based on the full-precision input. This is useful when the input is produced by {{#expr:}} or otherwise available to a higher precision than is usefully displayed, and it's desirable to avoid double-rounding.

To round the input to a specified number of digits after the decimal point, use one of the parameters:

  • |adj=ri0
  • |adj=ri1
  • |adj=ri2
  • |adj=ri3

Note that there is no |adj=ri-1Red XN or similar for rounding above the decimal place. Neither is there support for significant figures, multiples of 5, or any other output-rounding feature.

The default precision is computed based on the input, so an explicit output precision must usually be supplied:

In this case, if the input were rounded before conversion, a different result would be obtained:

  • {{convert|{{#expr:4.14159 round 0}}|mi|km|0}} → 4 ไมล์ (6 กิโลเมตร) Red XN (double rounding)

Into multiple units: 10 °C (แม่แบบ:Convert/F K)แก้ไข

Separate the multiple output units by a space:

If the output unit names contain spaces, use + as the separator.

See also:

Ranges of valuesแก้ไข

สำหรับa conversion of a difference ดู #Units of difference

A range converts two values and separates them by your choice of words and punctuation.

A range: 6 to 17 kg (13 to 37 lb)แก้ไข

Range indicators are entered as the second parameter (between the values). Range separators can be:
แม่แบบ:Convert/doc/range separator list

Multiple dimensions: แม่แบบ:Convert/x/AonSoff (แม่แบบ:Convert/x/AonSoff)แก้ไข

Use by:

Use ×, multiplication sign, or x, letter:

In science, the formal way is to set |x| and |abbr=on (keeping dimensions right, like in area = x km2):

Lists of values: 20, 40, or 60 milesแก้ไข

{{convert|20|,|40|, or|60|mi}}แม่แบบ:Convert/,

About feet, inch in ranges and multiplesแก้ไข

While it is possible to enter feet, inch in a simple conversion, this is not possible for ranges:

Default behaviour, for comparison:


Spelling of unit name: UK metre or US meter?แก้ไข

Default spelling of units is en-UK. To show en-US spelling, use |sp=us:

{{convert|1|m|ft}} → 1 เมตร (3.3 ฟุต)—default
{{convert|1|m|ft|sp=us}} → 1 เมตร (3.3 ฟุต)

Spell out numbers: ten milesแก้ไข

To write a number in words, use |spell=in:

  • {{convert|10|mi|m|spell=in}} → 10 ไมล์ (16,000 เมตร)

To spell out both in and out values, use |spell=on:

  • {{convert|10|mi|m|spell=on}} → 10 ไมล์ (16,000 เมตร)

To make first letter a capital, use |spell=In, |spell=On

  • {{convert|10|mi|m|spell=In}} → 10 ไมล์ (16,000 เมตร)
  • {{convert|10|mi|m|spell=On}} → 10 ไมล์ (16,000 เมตร)

Remember that the spelling of the units (ft, m) is independently set by |abbr=. To the extreme:

  • {{convert|10|mi|m|spell=on|abbr=off|sp=us}} → 10 ไมล์ (16,000 เมตร)

Inserted before units: 4 planted acresแก้ไข

disp=preunit is similar, but has no separator after the specified text, and can have different text for the output value:

After adjective unit: A แม่แบบ:Convert/LoffAoffDoutSmid corridorแก้ไข

Note that two units (in this case, ft and m) are required. Use with just one unit will generate an error message.


Plurals: 1 inch, 2 inchesแก้ไข

The unit symbol is singular always. Depending on the preceding number only, a unit name can be shown plural.


Entering the unit spelled |foot| forces singular output "foot", whatever the number is.

Fractions: one-eighth of an imperial pintแก้ไข

The convert template also supports spelling out fractions.

  • {{convert|3+1/2|oz|g|spell=in}} → --============================================================

-- Process fraction parts by negative/zero/positive (-1,0,1) --============================================================

-->This subtemplate is called by {{convert/numdisp}} and by {{convert/and/frn1}} to process fractions according to whether the whole number part (i.e. the a in a b/c) is positive, negative or zero calling {{convert/numdisp/frac1}}, {{convert/numdisp/frac-1}} or {{convert/numdisp/frac0}} respectively.</noinclude>31 ออนซ์ (99 กรัม) Any additional words needed for the fraction can also be added at the end of the template.

Wrapping and line breakingแก้ไข

See Help:Convert § Wrapping and line breaking

Spelling out "thousands", "millions", etc.แก้ไข

Most unit codes accept a prefix of e3 (thousand) or e6 (million) or e9 (billion).

To display both input and output in scientific notation, use |abbr=on

To spell out "thousands", "millions", etc., |abbr=unit abbreviates the unit; |abbr=off displays both full unit names.


Using an SI prefix: gigameter (Gm), or micrometer (μm)แก้ไข

แม่แบบ:Sidebar metric prefixes (small) Units can have an SI prefix like G before the unit: Gm, and giga before the name: gigameter. These are plain multiplication factors.

To illustrate, these are trivial calculations (from meter to meter), showing the multiplication factor:

The prefix can be added before the SI unit (here: unit m for meter):

The prefix can be used in the output unit:

As an exception, the non-SI unit "inch" can have the "μ" prefix too)

แม่แบบ:Further information

Engineering notation: 7 × 106 mแก้ไข

In the unit: e6mแก้ไข

Engineering notation can be entered as a "prefix" to the unit:

The same is possible for the output unit:

Any standard unit (not a combination, multiple, or built-in unit) can have such a prefix:

  • e3 (thousand),
  • e6 (million),
  • e9 (billion),
  • e12 (trillion),
  • e15 (quadrillion).

Scientific notation: 1.23 × 10−14แก้ไข

In scientific notation, a number is written like 1.23×10−14. The plain number has exactly one digit before the decimal point.

With {{convert}}, the input can be in e-notation such as 12.3e4. This value is displayed as a power of ten, and the output is displayed in scientific notation, except that an output value satisfying 0.01 <= v < 1000 is shown as a normal number. In addition, if the output value is 1000 and sigfig=4 is used, the value is displayed as a normal number.

Input with fractions: --=========================================================แก้ไข

-- Process fraction parts by negative/zero/positive (-1,0,1) --============================================================

-->This subtemplate is called by {{convert/numdisp}} and by {{convert/and/frn1}} to process fractions according to whether the whole number part (i.e. the a in a b/c) is positive, negative or zero calling {{convert/numdisp/frac1}}, {{convert/numdisp/frac-1}} or {{convert/numdisp/frac0}} respectively.</noinclude>11 นิ้ว (38.1 มม.)=== The number to convert can be written in fractions. Both / (keyboard slash) and (fraction slash) are accepted:

  • {{convert|1/2|in|mm|1}} → --============================================================

-- Process fraction parts by negative/zero/positive (-1,0,1) --============================================================

-->This subtemplate is called by {{convert/numdisp}} and by {{convert/and/frn1}} to process fractions according to whether the whole number part (i.e. the a in a b/c) is positive, negative or zero calling {{convert/numdisp/frac1}}, {{convert/numdisp/frac-1}} or {{convert/numdisp/frac0}} respectively.</noinclude>00 นิ้ว (12.7 มม.)

  • {{convert|1⁄2|in|mm|1}} → 1⁄2 นิ้ว (Formatting error: invalid input when rounding มม.)

With positive mixed numbers (a positive integer and a fraction), use a + sign

  • {{convert|2+1⁄2|in|mm|1}} → 2+1⁄2 นิ้ว (Formatting error: invalid input when rounding มม.)

With negative mixed numbers, use a hyphen - and repeat it:

  • {{convert|-2-1⁄2|in|mm|1}} → -2-1⁄2 นิ้ว (Formatting error: invalid input when rounding มม.)

Note that the following cases are not interpreted as mixed numbers:

  • {{convert|2-1⁄2|in|mm|1}} → 2-1⁄2 นิ้ว (Formatting error: invalid input when rounding มม.). This is interpreted as a range from 2 inches to 1⁄2 inch.
  • {{convert|-2+1⁄2|in|mm|1}} → -2+1⁄2 นิ้ว (Formatting error: invalid input when rounding มม.) Red XN This is neither a mixed number nor a range, and mathematical expressions requiring calculations are not allowed here.

Output with horizontal fraction bar in: 1/2 inchแก้ไข

Using a double slash (//) returns a horizontal bar fraction:

  • {{convert|1//2|in|mm|1}} → 1 นิ้ว (Formatting error: invalid input when rounding มม.)
  • {{convert|2+1//2|in|mm|1}} → 2+1 นิ้ว (Formatting error: invalid input when rounding มม.)

Thousands separator: 1,000 mi or 1000 miแก้ไข

In input, a comma for thousands separator is accepted but not required; a gap (space) is not accepted. In output, by default, the thousand separator is the comma:

  • {{convert|1234567|m|ft}} → 1,234,567 เมตร (4,050,420 ฟุต)
  • {{convert|1,234,567|m|ft}} → 1,234,567 เมตร (ข้อผิดพลาดนิพจน์: "," เป็นอักขระที่ไม่รู้จัก ฟุต)
  • {{convert|1 234 567|m|ft}} → 1 234 567 เมตร (ข้อผิดพลาดนิพจน์: ตัวเลขอยู่ผิดที่ ฟุต) Red XN

Set |comma=off to remove the separator from the output:

  • {{convert|1234567|m|ft|comma=off}} → 1,234,567 เมตร (4,050,420 ฟุต)

Use |comma=gaps to use digit grouping by gap (thin space) as a thousands separator:

  • {{convert|1234567|m|ft|comma=gaps}} → 1,234,567 เมตร (4,050,420 ฟุต)

Default behaviour, for comparison:

  • {{convert|1234567|m|ft}} → 1,234,567 เมตร (4,050,420 ฟุต)

Setting |comma=5 will only add the separator when the number of digits is 5 or more:

  • {{convert|1234|m|ft|comma=5}} → 1,234 เมตร (4,050 ฟุต)
  • {{convert|1234567|m|ft|comma=5}} → 1,234,567 เมตร (4,050,420 ฟุต)

Default behaviour, for comparison:

  • {{convert|1234|m|ft}} → 1,234 เมตร (4,050 ฟุต)

Output manipulationแก้ไข

Brackets and separators: 10 m [33 ft]แก้ไข

Punctuation that distinguishes the two measurements is set by |disp=.
Options are: b (the default), sqbr, comma, or, br, x|…:

Default behaviour, for comparison:

  • {{convert|10|m|ft}} → 10 เมตร (33 ฟุต)

Setting |disp=br will force a new line (<br/>)

Also |disp=br() will force a new line, and keep the brackets (useful in tables):

Setting |disp=x|… allows any text as separator:

Flipping (reordering) the two measurements: 1 ไมล์ (1,609.3 เมตร)แก้ไข

Setting |order=flip will flip (swap) the two measurements:

  • {{convert|1|mi|m|order=flip}} → 1 ไมล์ (1,609.3 เมตร)

Default behaviour, for comparison:

  • {{convert|1|mi|m}} → 1 ไมล์ (1,609.3 เมตร)

When converting to multiple units, the effect is:

Fixed ordering of output units: 100 °C (แม่แบบ:Convert/F C K)แก้ไข

Setting |order=out shows the output-units as ordered; the input unit is skipped:

  • {{convert|100|C|F C K|abbr=on|order=out}}100 °C (แม่แบบ:Convert/F C K)
  • {{convert|200|PS|kW hp|0|abbr=on|order=out}} → 200 PS (147 kW; 197 แรงม้า)

See also: § Displaying parts of the output.

Displaying parts of the result: แม่แบบ:Convert/cuydแก้ไข

It is possible to display only parts of the conversion result:

Convert Output Returns
{{convert|2|cuyd|m3}} แม่แบบ:Convert/cuyd Regular output (for comparison)
{{convert|2|cuyd|m3|abbr=values}} แม่แบบ:Convert/cuyd Input and output numbers
{{convert|2|cuyd|m3|disp=unit}} แม่แบบ:Convert/cuyd Input unit
{{convert|2|cuyd|m3|disp=unit|adj=on}} แม่แบบ:Convert/cuyd Input unit, adjective (hyphenated)
{{convert|2|cuyd|cuyd|disp=out}} แม่แบบ:Convert/cuyd Input (workaround. Note repetition of unit in input)
{{convert|2|cuyd|m3|abbr=~}} แม่แบบ:Convert/cuyd Input: both name and symbol
{{convert|2|cuyd|m3|disp=unit2}} แม่แบบ:Convert/cuyd Output unit (symbol)
{{convert|2|cuyd|m3|disp=unit2|abbr=off}} แม่แบบ:Convert/cuyd Output unit (name)
{{convert|2|cuyd|m3|disp=number}} แม่แบบ:Convert/cuyd Output value
{{convert|2|cuyd|m3|disp=out}} แม่แบบ:Convert/cuyd Output value and unit name
{{convert|2|cuyd|m3|disp=out|abbr=off}} แม่แบบ:Convert/cuyd Output value and unit symbol

Display both input name and symbol: 2 kilopascals [kPa]แก้ไข

Setting |abbr=~ returns both name and symbol of the first (input) unit:

Table optionsแก้ไข

For the wikitable structure, there are three options: add a line-break, split the result over columns and make the table sortable.

Enforced line breakแก้ไข

|disp=br adds a line-break and omits brackets.

|disp=br() adds a line-break and does add brackets to the converted value. This may be useful in tables:

|disp=br |disp=br()
แม่แบบ:Convert/LoffAoffDbrSoff แม่แบบ:Convert/LoffAoffDbr()Soff

Table columnsแก้ไข

Using {convert} in a table cell, with |disp=table splits the result over two (or more) columns. By default units are not included in the table, however, they can be added using the |abbr= parameter. Multiple-unit outputs, like ftin, always output their units to the table.


align=right|10 |align=right|33

|disp=tablecen does the same, and also centers the text:


style="text-align:center;"|20 |style="text-align:center;"|66

The units are added as a column header:

  metres feet feet and inches
|disp=table 10 แม่แบบ:Convert/ft ftin
|disp=table and |abbr=on 20 เมตร แม่แบบ:Convert/ft ftin
|disp=table and |abbr=off 30 แม่แบบ:Convert/ft ftin
|disp=tablecen 40 แม่แบบ:Convert/ft ftin
|disp=<other> (default) แม่แบบ:Convert/LoffAoffDSoff


Use |sortable=on to include a hidden numerical sortkey in the output, suitable for use in a table with sortable columns. Technically, this places a hidden string before the actual displayed values:

{{convert|10|m|ft|sortable=on}} <span data-sort-value="7001100000000000000♠"></span>10 metres (33 ft)
showing: 000000000000001010 เมตร (33 ฟุต).

Use both |disp=table and |sortable=on together to produce table columns (pipe symbols) for each value in sortable columns:

m ft
A 15+3/4 52
B 15.5 51
C 16.0 52
D 16 52

The generated sortkey is calculated in a consistent way based on both the value and its unit as passed to the convert template. In most cases convert uses the passed value converted to SI base units. It is therefore not necessarily the displayed value or other alternate units and is calculated regardless of output format options. Using different units or different order of units in individual rows should therefore not lead to incorrect sorting, although variations in rounding can give surprising results, since an unrounded number is used for the sortkey.


The conversion factors and physical constants are sourced here.

All unitsแก้ไข

Units are case-sensitive: use kW, not KW or kw

แม่แบบ:Convert/list of units

'per' units: kg/hl, miles per gallonแก้ไข

When using a slash (/), a unit like kg/hl is recognized as kilograms per hectolitre and will be converted with other mass/volume units.

Population density (inhabitants per square mile) can be converted using

Vehicular fuel efficiency, commonly expressed in miles per gallon or litres per 100 km can also be converted

Units of difference: Expressing a change or difference in temperatureแก้ไข

We have already discussed standard temperature conversions (°C, °F, K), as shown in these two examples:

  • สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate (standard temperature conversion)
  • สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate (standard temperature range conversion)

When expressing a temperature change (e.g., "The temperature increased by 10 °C"), or when comparing temperatures (e.g., "10 to 15 °C warmer"), we cannot use the standard temperature units (|C, |F and |K), which refer to points on the respective scale. Instead, we must use one of the following "units of difference": |C-change, |F-change and |K-change.

Compare the following two examples with the two above:

  • สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate increase in temperature
  • สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate warmer than normal

To produce multiple units in the output:

  • สคริปต์ผิดพลาด: ไม่มีมอดูล DemoTemplate difference

Multiple units: 1 ft 5 inแก้ไข

In inputแก้ไข

Base document § Input multiples lists options for multiple unit input (like ft,in). It can catch predefined sets only (units that can be subdivided; e.g., yd into ft):

In outputแก้ไข

Available multiple-unit output options predefined, like ftin and ydftin. The full list is at § Output multiples.

  • {{convert|2|m|ftin}} → 2 เมตร (6 ฟุต 7 นิ้ว)
  • {{convert|2|m|ft in}} → 2 เมตร (แม่แบบ:Convert/ft in), using a space, returns the decimal point

Default behaviour, for comparison:

  • {{convert|2|m}} → 2 เมตร (6.6 ฟุต)

See also:

  • {{hands}} a length used to measure horses
  • {{Long ton}} a weight in ton, cwt, qr and lb

Currency per unit: $/mi → $/kmแก้ไข

Using currency symbols in a $ per unit value, you can convert the per-unit:

You can set the currency in both values using |$=€:

It is not possible to convert the currency. So, this result (mixed currencies) is not possible: $15 per mile (€8.6/km) Red XN

Using convert inside templatesแก้ไข

For usage in template code, like infoboxes, {{Convert}} has these options:

Pre-formatting fraction input
Your template can accept |input=16 7/8 and use {{#invoke:Convert/helper|number|16 7/8}} → สคริปต์ผิดพลาด: ไม่มีมอดูล Convert/helper
Using a Wikidata property
  • Adding the Wikidata property code, like code |input=P2073, to your template code automatically returns the Wikidata property for that article, and convert it. Both number and unit are read.

Note: to return that property value for an other article, use |qid=.

Example for แม่แบบ:Wikidata property link: Note: this example uses |qid=Q1056131 (testing for แม่แบบ:Wikidata entity link)

  • {{convert|input=P2073|qid=Q1056131|ftin|abbr=on}} → {{convert/{{{2}}}|ftin|0|||||r=re|d=LoffAonDbSoff|s=}}
  • {{convert|input=P2073|qid=Q1056131|km|abbr=on}} → {{convert/{{{2}}}|km|0|||||r=re|d=LoffAonDbSoff|s=}}
  • {{convert|input=P2073|qid=Q1056131|km|abbr=on|disp=out}} → {{convert/{{{2}}}|km|0|||||r=re|d=LoffAonDoutSoff|s=}}
For example see template:Infobox Telescope.

Sometimes a property may have more than one value against in in Wikidata. You can use the |qual= parameter to specify which of the values you want to use.

Example for แม่แบบ:Wikidata property link: Note: this example uses |qid=Q1513315 (testing for แม่แบบ:Wikidata entity link)

Parameter listแก้ไข

แม่แบบ:Convert/doc/parameter list

Deprecated optionsแก้ไข

แม่แบบ:Convert/doc/deprecations list


นี่คือเอกสารข้อมูลแม่แบบสำหรับแม่แบบนี้เมื่อใช้กับ วิชวลเอดิเตอร์ และเครื่องมืออื่น; ดูรายงานข้อผิดพลาดประจำเดือนสำหรับแม่แบบนี้

ข้อมูลแม่แบบสำหรับ Convert

Converts measurements to other units.


This template prefers inline formatting of parameters.


The value to convert.

From unit2

The unit for the provided value.

To units3

The units to convert into. Separate units by a space for multiple outputs. In an output unit, use + for a multiplication space.

mi nmi
Precision or suffix4

Significant digits after decimal dot or, if negative, exponent of ten.

Link unitslk

Indication of what units to apply wikilinks to. Use “on” for all, “in” for the input unit, “out” for the output units, or “off” for none of the units.


Display for the units: “on” to display all units using their unit symbols, “off” to display all units in full words, “in” to display the unit symbol for the input unit, “out” to display the unit symbols for the output units, “unit” to display unit symbols for both input and output units when using scientific notation, “values” for no units at all (neither unit symbols nor full words of units).

on, unit, in, out, off

Spelling of units. Use “us” to display unit names using U.S. spelling.


Whether to use adjectival form. Use “on” for singular unit name appended by a hyphen, “mid” to put conversion at end, or “off” (default) for no adjectival form.


Display conversion result: “or”: after ‘or’, “x”: with custom prefix and suffix, “b”: in parentheses, “table”/“tablecen”, “output only”: alone, “output number only”: alone and without unit, “unit”: not at all but input unit; if the value is a number it is used as precision.


“flip” returns converted value first, input value second.

Significant figuressigfig

Indicates the number of significant figures to be used in rounding.

Rounding outputround

The type of rounding. “5” rounds the output number to nearest multiple of 5, “25” to nearest multiple of 25, “each” rounds each number in a range.

Thousands separatorcomma

Sets or suppresses the use of thousands separators in the numbers. “off”: no separator; “gaps”: use space instead of comma as thousands separator; “5” and “gaps5”: only add thousands separator when the integral part of the number uses 5 positions or more (10,000 or more; if using comma as thousands separator, 1234 would produce '1234', 12345 would produce '12,345').

Sort keysortable

“on” generates a hidden sort key

spell numbers?spell

If used, spells input or input and output numbers in words, optionally capitalizing the first

'in', 'In', 'on', or 'On'

If 'yes', uses singular form of units (deprecated)


fraction as rounding unit

currency symbol$

sets currency symbol in both units

$=€ will show " €10 per mile (€6.2/km)"
WD propertyinput

Reeds the property value of the item (article), then converts it

{{convert|input=P2046}} (P2046=area)

See alsoแก้ไข

แม่แบบ:Convert navs