Free 100% In-Browser Tool

Decimal to Fraction Calculator

Convert terminating and repeating decimals to simplified fractions and mixed numbers.

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How to Use the Decimal to Fraction Calculator

  1. 1Type any decimal into the input box (e.g. 0.75, 2.375, or repeating patterns).
  2. 2The tool analyzes the decimal places and converts the number into a fraction over powers of 10.
  3. 3The fraction is simplified by dividing the numerator and denominator by their greatest common factor.
  4. 4View the reduced fraction and mixed number.

Formula & How It Works

Decimal Conversion Process

0.xyz = xyz / 10³ = (xyz / GCF) / (1000 / GCF)

For a terminating decimal with d decimal digits, write it as an integer over 10^d and reduce by dividing both parts by GCF(numerator, 10^d).

Worked Examples

Converting 0.625

Input: 0.625

Explanation: 625 / 1000 simplified by dividing both by GCF(625, 1000) = 125 gives 5/8.

Result: 5/8

Mixed Number Conversion

Input: 3.75

Explanation: Whole part is 3, 0.75 reduces to 3/4.

Result: 3 3/4 (or 15/4)

Frequently Asked Questions

Can this tool handle repeating decimals?▼

Yes, you can toggle repeating decimal mode to convert patterns like 0.333... into 1/3.

Does it convert negative decimals?▼

Yes, the negative sign is retained in the resulting fraction.

What is the difference between a proper and improper fraction?▼

A proper fraction has a numerator smaller than its denominator, while an improper fraction has a numerator greater than or equal to its denominator.

How do I copy the fraction?▼

Click the 'Copy Fraction' button to instantly copy in both standard (a/b) and Unicode formats.

Last reviewed & updated: 2026-03-28
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