模板:Convinfobox/doc

This template is based on {{convert}}. It is intended as a meta-template for use in infoboxes. It accepts from four to seven unnamed parameters. Even parameters must be numerical (or empty) and specify the numerical value of a measurement and the intended precision of the conversion. Odd parameters must be unit codes as used in {{convert}}. Named parameters are the same as {{convert}}'s.

This template differs from {{convert}} in the following respects.

• The units to convert to and the units to convert from must be specified (therefore there are no default convert-to units).
• Feilds for the numerical value of a measurement may be left blank.
• The default to to abbreiviate units (where abbreviations exist).
• Range conversions are not available.

This template may be used when it is unknown in which direction the conversion is to be made. The direction is determined as shown in the following examples.

• {{convinfobox|100|m2||sqft}} gives "100平方米（1,100平方英尺）"
• {{convinfobox||m2|100|sqft}} gives "100平方英尺（9.3平方米）"

Dual conversions

Dual conversions may be performed by adding a fifth (possibly blank) and sixth unnamed parameter.

• {{convinfobox|375|ml||impoz||usoz}} gives "375毫公升（13.2英制液态盎司；12.7美制液态盎司）"
• {{convinfobox||ml|40|impoz||usoz}} gives "40英制液态盎司（1,100毫公升；38美制液态盎司）"
• {{convinfobox||ml||impoz|32|usoz}} gives "32美制液态盎司（950毫公升；33英制液态盎司）"

Paired units

Length may be expressed in feet and inches.

• {{convinfobox|180|cm||ft||in}} gives "180厘米（5英尺11英寸）"
• {{convinfobox||cm|5|ft||in}} gives "5英尺（150厘米）"
• {{convinfobox||cm||ft|120|in}} gives "120英寸（300厘米）"
• {{convinfobox||cm|5|ft|6|in}} gives "5英尺6英寸（168厘米）"
• {{convinfobox||ft||in|180|cm}} gives "180厘米（5英尺11英寸）"
• {{convinfobox|5|ft||in||cm}} gives "5英尺0英寸（152厘米）"
• {{convinfobox||ft|120|in||cm}} gives "120英寸（300厘米）"
• {{convinfobox|5|ft|6|in||cm}} gives "5英尺6英寸（168厘米）"

Similarly, mass may be expressed in pounds and ounces.

• {{convinfobox|8.5|kg||lb||oz}} gives "8.5千克（18英磅12盎司）"
• {{convinfobox||kg|4|lb|3|oz}} gives "4英磅3盎司（1.9千克）"

Mass may also be expressed in stone and pounds.

• {{convinfobox|65|kg||st||lb}} gives "65千克（143英磅；10英石3英磅）"
• {{convinfobox||kg|10|st||lb}} gives "10英石0英磅（64千克；140英磅）"
• {{convinfobox||kg|10|st|7|lb}} gives "10英石7英磅（67千克；147英磅）"
• {{convinfobox||kg||st|145|lb}} gives "145英磅（66千克；10英石5英磅）"

Leaving all numerical fields blank

If all numerical value fields are left blank the template returns nothing.

• {{convinfobox||m2||sqft}} gives ""
• {{convinfobox||ml||impoz||usoz}} gives ""

Specifying more than one value

The template currently bases conversions on the first non-blank numerical value ignoring any secondary or tertiary values.

• {{convinfobox|100|m2|100|sqft}} gives "100平方米（1,100平方英尺）"
• {{convinfobox|375|ml|40|impoz||usoz}} gives "375毫公升（13.2英制液态盎司；12.7美制液态盎司）"
• {{convinfobox|375|ml||impoz|32|usoz}} gives "375毫公升（13.2英制液态盎司；12.7美制液态盎司）"
• {{convinfobox||ml|40|impoz|32|usoz}} gives "40英制液态盎司（1,100毫公升；38美制液态盎司）"

Rounding

As with {{convert}} rounding can be done automatically or manually by specifying the precision and/or number of significant figures in the converted value. The number of significant figures can be determined by the parameter sigfig. The precision can be determined by the fifth (if there is no sixth) or seventh (if there is a sixth) unnamed parameter as shown in the examples below.

• {{convinfobox|100|m2||sqft|4}} gives "100平方米（1,076.3910平方英尺）"
• {{convinfobox|100|m2||sqft|sigfig=4}} gives "100平方米（1,076平方英尺）"
• {{convinfobox||ml|40|impoz||usoz|2}} gives "40英制液态盎司（1,136.52毫公升；38.43美制液态盎司）"
• {{convinfobox||ml|40|impoz||usoz|sigfig=3}} gives "40英制液态盎司（1,140毫公升；38.4美制液态盎司）"
• {{convinfobox||kg|10|st|7|lb|3}} gives "10英石7英磅（66.678千克；147.000英磅）"
• {{convinfobox||kg|10|st|7|lb|sigfig=5}} gives "10英石7英磅（66.678千克；147.00英磅）"