How to convert 31 inches to centimeters?
We know (by definition) that:
We can set up a proportion to solve for the number of centimeters.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 centimeter is equal to 0.0127000254000508 times 31 inches.
It can also be expressed as: 31 inches is equal to centimeters.
An approximate numerical result would be: thirty-one inches is about zero centimeters, or alternatively, a centimeter is about zero point zero one times thirty-one inches.
 The precision is 15 significant digits (fourteen digits to the right of the decimal point).Results may contain small errors due to the use of floating point arithmetic.