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Fraction to Decimal Calculator

Convert a fraction or mixed number to an exact decimal, with any repeating digits marked.

Change the values and press Calculate to work out your own figures.

Enter a fraction (a whole-number part is optional).

About numeratorThe top number.
About denominatorThe bottom number (not 0).
About whole numberThe whole-number part (leave blank for a plain fraction).
Result
As a decimal
0.5
Fraction
1/2
Percent
50%

1/2 = 0.5.

Show the working
  1. Divide the numerator by the denominator (a remainder that comes back means the digits repeat)

How to use it

Enter a fraction (a whole-number part is optional).

Numbers can be whole numbers, decimals (0.75), fractions (3/4), mixed numbers (1 1/2), repeating decimals (0.(3)) and, where a percent is asked for, percentages (75%). Show the working gives each step.

Key facts

decimal = numerator ÷ denominator

Repeating decimals

A fraction in lowest terms ends only when its denominator has no prime factors but 2 and 5; otherwise the digits repeat.

Questions

What is 1/7 as a decimal?

0.(142857), the six digits repeating.

What is 3/8?

0.375.

Formulas

decimal = numerator ÷ denominator

Sources

Limitations

  • Numbers have at most 120 digits.

Formula version 0.1.0Reviewed