Fraction to decimal calculator
Divide the numerator by the denominator to get the decimal form. The calculator also shows the value as a percentage.
The fraction 5/8 is 0.6250 as a decimal.
Formula
a is the numerator and b the denominator. A fraction is a division written down, so you just carry it out.
How we got there
Some fractions give a recurring decimal, such as 1/3 = 0.3333… The calculator rounds to four decimal places.
How to convert a fraction to a decimal by hand
- Read the fraction as a division
5/8 is simply 5 divided by 8.
- Carry out the division
5 ÷ 8 = 0.625.
- Spot a recurring decimal
If the denominator has factors other than 2 and 5, the decimal recurs — as in 1/3 = 0.333…
Want to practise more conversions? a lesson with a Mathema tutor
Frequently asked questions
Divide the numerator by the denominator. For 5/8: 5 ÷ 8 = 0.625.
Those whose denominator, once reduced, has only the factors 2 and 5 — such as 1/8 or 3/20.
Four. That is enough for school questions and lets you spot a recurring decimal.
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