Both directions
Convert a fraction to a decimal or a decimal to a fraction in one click, with the input shaped like the maths so there is nothing to mistype.
Fraction ↔ decimal · Repeating decimals · Mixed numbers · Simplify · No upload
Fraction to Decimal Converter
Turn any fraction into a decimal and any decimal back into a fraction — exactly, not just rounded. Type 3/4 to get 0.75, or 0.(6) to get 2/3. The converter spots repeating decimals, reads mixed numbers like 1 1/2, reduces every result to lowest terms and shows the full long-division working. It also gives you the percentage and the closest simple fraction. Everything runs in your browser with exact integer math — no upload, no sign-up, no rounding errors.
Enter a fraction. Accepts 3/4, a mixed number 1 1/2, or a negative -2/3.
Enter a decimal. For a repeating decimal put the repeating digits in brackets — 0.(3) = 0.333…, 0.1(6) = 0.1666…
Reduce a fraction to its lowest terms and read its decimal, percentage and mixed-number forms.
Result
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Ready
Key features
Repeating decimals
Write the recurring part in brackets — 0.(3), 0.1(6), 0.12(45) — and get the exact fraction, or see the repeating block a fraction produces.
Mixed numbers & simplify
Reads and writes mixed numbers like 1 1/2, reduces every fraction to lowest terms and shows the greatest common divisor it used.
Exact integer math
All arithmetic uses big-integer fractions, so there is no floating-point drift — 0.1 + 0.2 problems never appear in the result.
Frequently asked questions
How do I convert a fraction to a decimal?
Divide the numerator by the denominator. For 3/4 you compute 3 ÷ 4 = 0.75. When the division never settles you get a repeating decimal, such as 1/3 = 0.333…, written 0.(3). The converter performs the long division and detects the repeating block for you.
How do I turn a decimal into a fraction?
Write the digits over the matching power of ten and simplify. 0.75 = 75/100 = 3/4. For a repeating decimal like 0.(6), the recurring-decimal formula gives 6 ÷ 9 = 2/3. The tool applies both methods and reduces the answer to lowest terms.
Can it handle repeating (recurring) decimals?
Yes. Put the repeating digits in brackets — 0.1(6) for 0.16666… — and you get the exact fraction 1/6. In the other direction it shows the repeating period of any fraction whose decimal does not terminate, up to a long cycle.
What is the “closest fraction” method for?
If you paste a long rounded decimal like 0.3333333 without brackets, the exact reading is an awkward fraction over ten million. Switch to Closest fraction and the tool finds the simplest fraction within your chosen maximum denominator — here, 1/3.
Is my data sent anywhere?
No. Every calculation runs locally in your browser. Nothing is uploaded, and the page keeps working offline once it has loaded.