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Fraction Calculator

Exact fraction arithmetic with simplified results.Math & Statistics

Fraction Calculator

Exact fraction arithmetic with BigInt rationals — results are simplified, never rounded floats.

3/4, 5, or mixed 1 1/2

Exact result
5/6
As decimal
0.833333

About this tool

Fractions are computed as exact BigInt rationals — no floating-point drift. Mixed numbers like one-and-a-half are accepted, and results always come back in lowest terms.

How to use the Fraction Calculator tool

  1. Enter two fractions. 3/4, whole numbers, or mixed forms.
  2. Choose the operation. Plus, minus, times or divide.
  3. Read the result. Exact fraction plus decimal equivalent.

Supported formats

Input

  • Plain text or file input

Output

  • Converted or analysed output

Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.

Frequently asked questions

Why BigInt?

Numerators can grow quickly in chained operations; BigInt keeps them exact.

Is division by zero handled?

Yes, with a clear error.

What is a mixed number?

A whole part plus a fraction — accepted as input.

Privacy

Everything you enter stays in this browser tab. There is no upload endpoint for tool inputs, no account, and no server-side copy of your text or files. Results are produced locally and disappear when you close the page.

No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.

Known limitations

  • Decimal inputs are not accepted; fractions and whole numbers only.

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