Convert 21 centimeters to inches
All In One Unit Converter 

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Please, choose a physical quantity, two units, then type a value in any of the boxes above.


To use this calculator, simply type the value in any box at left or at right. It accepts fractional values.
Using this converter you can get answers to questions like:
 How many inches is 21 centimeters.?
 21 centimeters is equal to how many inches?
 How tall is 21 cm in feet and inches
 What is the cm to in conversion factor?
 What is the formula to convert from cm to in? among others.
Definition of centimeter
A centimeter (cm) is a decimal fraction of the meter, the international standard unit of length, approximately equivalent to 39.37 inches.
Definition of inch
An inch is a unit of length or distance in a number of systems of measurement, including in the US Customary Units and British Imperial Units. One inch is defined as 1⁄12 of a foot and is therefore 1⁄36 of a yard. According to the modern definition, one inch is equal to 25.4 mm exactly.
Centimeter to inches formula and conversion factor
To calculate a centimeter value to the corresponding value in inch, just multiply the quantity in centimeter by 0.39370078740157 (the conversion factor).
Centimeter to inches formulae
The factor 0.39370078740157 is the result from the division 1/2.54 (Inch definition). So, a better formula is
Values around 21 centimeter(s)
Centimeters  Inches 

20.35  8.01181 
20.45  8.05118 
20.55  8.09055 
20.65  8.12992 
20.75  8.16929 
20.85  8.20866 
20.95  8.24803 
21.05  8.28740 
21.15  8.32677 
21.25  8.36614 
21.35  8.40551 
21.45  8.44488 
21.55  8.48425 
21.65  8.52362 
21.75  8.56299 