Fraction to Decimal Calculator

Convert any fraction or mixed number to a decimal and a percent, and see repeating decimals marked with a bar. Example: 7/8 is 0.875, and 1/3 is 0.333 repeating.

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Type the problems from this lesson and check each step.

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How to use the Fraction to Decimal Calculator

  1. Enter the numerator and denominator.
  2. If you have a mixed number, enter the whole part too.
  3. Press Calculate to get the decimal, percent and simplified fraction.

Formula and method

Decimal = numerator / denominator. For a mixed number, add the whole part. A decimal repeats when the reduced denominator has prime factors other than 2 and 5.

Worked example: 7/8

Step Work
Divide 7 / 8 = 0.875
Percent 87.5%
Type Terminating

Common fractions as decimals

Fraction Decimal Percent
1/2 0.5 50%
1/3 0.333… 33.33%
1/4 0.25 25%
1/5 0.2 20%
1/6 0.1666… 16.67%
1/8 0.125 12.5%
1/10 0.1 10%
2/3 0.666… 66.67%
3/4 0.75 75%

Repeating decimals

1/3, 1/6, 1/7 and 1/9 do not end. Their digits repeat in a cycle, shown with a bar over the repeating block. 1/7 repeats every 6 digits.

Frequently asked questions

How do I convert a fraction to a decimal?

Divide the numerator by the denominator. 7 divided by 8 is 0.875.

How do I convert a mixed number?

Convert the fraction part and add the whole number, or turn it into an improper fraction first.

What is a repeating decimal?

A decimal whose digits repeat forever, like 0.333… for 1/3.

Which fractions terminate?

Those whose reduced denominator has only 2 and 5 as prime factors.

How do I turn a fraction into a percent?

Multiply the decimal by 100. 3/4 is 0.75, or 75%.

What is 1/7 as a decimal?

0.142857 repeating.

Sources

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