Decimals & Rounding

Convert between fractions, decimals and percents, and round or estimate to any place value, with the conversion shown step by step. Try “convert 5/8 to a decimal and a percent”.

Try an example:

What you can do with the Decimals & Rounding

Convert fractions, decimals and percents; round and estimate.

Enter your values or describe the problem in the calculator above. Review the result and the explanation before using it in homework, study or practical calculations.

Example input

e.g. convert 5/8 to a decimal and a percent

How the Decimals & Rounding works

  1. Fraction to decimal: divide the numerator by the denominator (5 ÷ 8 = 0.625).
  2. Decimal to percent: multiply by 100 (62.5%).
  3. To round, look at the digit after your target place: 5 or more rounds up.

Frequently asked questions

How do you convert a decimal to a fraction?

Write the decimal over a power of ten (0.625 = 625/1000) then simplify to 5/8.

What are the rounding rules?

Look at the next digit. If it is 5 or more, round the previous digit up; otherwise leave it.

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Math Solver can make mistakes. Please double-check important steps and calculations.