Measurement calculator
Fraction to Decimal Calculator
Convert a fraction or mixed number into a decimal, millimeters and a percentage.
What the result means
A fraction is division written sideways. The numerator is divided by the denominator. A mixed number adds the whole number afterward.
Formula
Decimal = whole number + numerator ÷ denominator
Worked example
For 1 7/16, divide 7 by 16 to get 0.4375, then add the whole number. The result is 1.4375 inches, which is 36.5125 millimeters.
Common mistakes
- Dividing the denominator by the numerator.
- Typing the whole number as part of the numerator.
- Rounding the decimal before using it in another calculation.
Before you use the result
This calculator performs the math using the information you enter. Check the measurements and make sure the result fits the actual project before cutting, drilling, buying materials, or putting anything into service.