How do you convert inches to decimal numbers?

Answer 1

Example: 3 13/16"

13 divided by 16 = 0.8125"

3.0" + 0.8125" = 3.8125"

3 and 13/16 of an inch . 1 inch = 25.4 mm. so 3x25.4=76.2 . now for the fractions.13 divided 16 = 0.8125 x 25.4=20.6 now add 76.2 and 20.6 and you've got your answer in mm

Answer 2

You cannot convert inches to decimal numbers. Inches are a unit of measure (of length), whereas a decimal number is a pure number - a way of representing a quantity in such a way that the place value of each digit is ten times that of the digit to its right.