Rounding Calculator

Round any number to any decimal place or whole number. Choose rounding mode: standard, up, or down.

Number

Decimal places

How Rounding Works

Standard rounding: If the next digit is ≥ 5, round up; otherwise round down.

Round up (ceiling): Always round toward positive infinity.

Round down (floor): Always round toward negative infinity.

3.14159 rounded to 2 decimal places = 3.14
3.14500 rounded to 2 decimal places = 3.15

Last updated: 2026-08-08