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Decimal to Fraction Calculator.

Convert a finite decimal exactly into a reduced fraction.

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Result: numerator: 5.000000 · denominator: 8.000000 · decimal: 0.625000

Result

numerator: 5.000000 · denominator: 8.000000 · decimal: 0.625000

Use Cases

Math Homework and Study

Quickly check your work when converting decimals to fractions for algebra, geometry, or arithmetic assignments.

Example: Verify that 0.125 equals 1/8.

Cooking and Baking Measurements

Convert decimal measurements from digital scales or recipes into easy-to-use fractions for measuring cups.

Example: Convert 0.25 cups to 1/4 cup.

Frequently Asked Questions

How does the Decimal to Fraction Calculator work?
You enter a finite decimal (e.g., 0.75). The calculator converts it to a fraction by placing the decimal over a power of 10 (e.g., 75/100) and then reduces it to its simplest form by dividing numerator and denominator by their greatest common divisor (GCD).
Can I convert a decimal with many digits?
Yes, as long as the decimal is finite (terminating). The calculator handles any finite decimal you enter, no matter how many digits, and reduces the resulting fraction exactly.
What does 'reduced fraction' mean?
A reduced fraction is one where the numerator and denominator have no common factors other than 1. For example, 0.75 becomes 3/4, not 75/100, because 3 and 4 share no common divisor.

Tips & Common Mistakes

Tips

  • Enter the decimal exactly as it appears, including all digits after the decimal point, to get the most accurate fraction.
  • If your decimal has a repeating pattern (like 0.333...), this calculator is for finite decimals only; use a repeating decimal calculator instead.
  • After conversion, you can use the fraction in further calculations or simplify it manually if needed.
  • Remember that whole numbers can be entered as decimals (e.g., 2.0) and will convert to a fraction with denominator 1.

Common Mistakes to Avoid

  • Entering a decimal with a comma instead of a period (e.g., 0,75) – use a period as the decimal separator.
  • Assuming the calculator handles repeating decimals – it only works for finite (terminating) decimals.
  • Forgetting that the fraction is reduced automatically – you don't need to simplify it yourself.

Last updated: August 13, 2026