Math

Rounding Calculator

Round a number to a chosen number of decimals.

Calculated Output

Rounded 3.14

Formula: round to the nearest 10^(−decimals)

Step-by-Step Breakdown

1. Values used:

2. Number = 3.142

3. Decimal places = 2

5. Rounded = 3.14

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The math behind it

Multiply by 10^decimals, round to the nearest whole number, then divide back.

3.14159 to 2 places → 3.14.

Half rounding?

Standard rounding sends .5 upward (round half up).