math calculator

Decimal to Fraction Calculator

Turn any decimal back into its simplest fraction form.

Important Use Notice

Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.

Estimate

Enter job values, review the estimate, then use the decision hints before ordering or quoting.

Enter any decimal number

Estimate Results

Enter values to see the result.

Example

0. 75 → 3/4

Formula

Uses continued fraction algorithm to find p/q such that |decimal - p/q| is minimized

Iteratively finds the best rational approximation within a small tolerance.

Result is reduced to lowest terms automatically

Check

Forcing improper fractions when mixed numbers are needed
Confirm that all inputs use the same unit system expected by the formula.

Next Step

Next Calc

Fraction to Decimal Calculator

Convert any fraction to its decimal form instantly.

Next Calc

Mixed Number to Improper Fraction Converter

Easily convert mixed numbers (like 3 1/4) into improper fractions.

Next Calc

Fraction Simplifier Calculator

Next: fraction simplifier.

FAQ

Why isn't 0. 333333 exactly 1/3?

Due to floating-point precision, it approximates. The calculator finds the closest fraction.

Can it handle repeating decimals?

Yes — it approximates repeating decimals to the best simple fraction.