How to convert 21 mm to inches?
The conversion factor from mm to inches is 0.0393700787. To convert any value of mm to inches, multiply the millimeter value by the conversion factor.
To convert 21 mm to inches, multiply 21 by 0.0393700787 (or divide by 25.4), that makes 21 mm equal to 0.8267717 inches.
21 mm to inches formula
inch = mm value * 0.0393700787
inch = 21 * 0.0393700787
inch = 0.8267717
Common conversions from 21.x mm to inches:
(rounded to 3 decimals)
- 21 mm = 0.827 inches
- 21.1 mm = 0.831 inches
- 21.2 mm = 0.835 inches
- 21.3 mm = 0.839 inches
- 21.4 mm = 0.843 inches
- 21.5 mm = 0.846 inches
- 21.6 mm = 0.85 inches
- 21.7 mm = 0.854 inches
- 21.8 mm = 0.858 inches
- 21.9 mm = 0.862 inches
What is a Millimeter?
Millimeter (centimetre) is a metric system unit of length. 1 Millimeter = 0.0393700787 Inch. The symbol is "mm".
What is a Inch?
Inch is an imperial and United States Customary systems unit of length, equal to 1/12 of a foot. 1 inch = 25.4 mm. The symbol is "in".