Turning a fraction into a decimal is division: 3 ÷ 8 = 0.375.
About this calculator
Turning a fraction into a decimal is division: 3 ÷ 8 = 0.375. Some fractions stop after a few digits; others repeat forever — 1/3 = 0.333…
Enter numerator and denominator. The calculator divides, shows the decimal, and flags when digits start repeating.
Use it to compare fractions on a number line or prepare decimal inputs for calculators. Go the other way with the [[decimal-to-fraction]] calculator. Simplify first with [[simplify-fractions]] or compare sizes with [[compare-fractions]].
Common uses
- Convert exam answers from fractions to decimals
- Check whether a fraction terminates or repeats
- Compare rational numbers on a decimal number line
- Prepare decimal inputs for spreadsheets
Frequently asked questions
What is 3/8 as a decimal?
0.375. Three divided by eight terminates after three decimal places.
What is 1/3 as a decimal?
0.333… repeating. The digit 3 repeats because the remainder cycle never reaches zero.
Can the denominator be negative?
Yes. The sign appears on the numerator in lowest terms — e.g. −3/8 = −0.375.
Which fractions terminate?
Those whose denominator (in lowest terms) has only prime factors 2 and 5 — like 1/4, 3/8, 7/20.