Rounding Numbers Calculator

Your details

Enter any positive or negative number, integer or decimal.
Select a decimal place, a whole-number place (tens, hundreds...), or significant figures.
Half up is the everyday standard. Banker's rounding (half to even) reduces cumulative bias. Ceiling/floor always round toward +infinity/-infinity.
Rounded result
3.14

The value after applying the selected rounding rule

Original number3.14159
Rounding error-0.00159
RoundedRounded down

3.14159 rounds to 3.14

  • 3.14159 rounded to hundredths using Half up (standard) is 3.14.
  • The rounding error (difference between original and result) is -0.00159.

Next stepIf you are rounding for a financial or scientific context, double-check whether your field specifies a particular rounding mode (e.g. banker's rounding in accounting, round-half-up in everyday arithmetic).

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