Decimals and fractions are two views of the same number.
About this calculator
Decimals and fractions are two views of the same number. 0.375 is three eighths — 3/8 — once you place the digits over the right power of ten and simplify.
Enter any decimal and the calculator finds a fraction in lowest terms. Adjust the max denominator when you need a close rational for a long repeating decimal.
Works well for measurements, test scores, and recipe scaling. Reverse the direction with the [[fraction-to-decimal]] calculator. For mixed numbers try the [[mixed-numbers]] calculator. For simplification alone see [[simplify-fractions]].
Common uses
- Convert calculator decimals to fractional answers
- Express measurements like 0.125 inches as 1/8
- Approximate repeating decimals for homework
- Prepare fraction inputs for further algebra
Frequently asked questions
What is 0.375 as a fraction?
3/8. Three digits after the decimal over 1000 gives 375/1000, which reduces by 125 to 3/8.
How do you convert 1.25 to a fraction?
1 + 25/100 = 1 + 1/4 = 5/4, or 1¼ as a mixed number.
What about repeating decimals like 0.333…?
Exact repeating decimals need algebraic tricks; this tool finds a close fraction within your max denominator — often 1/3 for 0.333.
Why set a max denominator?
It bounds the search for best approximations. Higher caps give closer matches for awkward decimals at the cost of larger fractions.