Math Calculators
Rounding Calculator
Round decimals or whole numbers using nearest, up, down or truncate modes.
Free foreverRuns in your browserNo sign-up
Rounded result
1234.57
Use negative places to round tens (-1), hundreds (-2) or larger positions.
About the Rounding Calculator
Rounding replaces a number with a nearby value at a chosen level of precision. It makes measurements, prices and calculated results easier to communicate.
Choose standard nearest rounding, always round up, always round down or truncate unwanted digits. Positive places control decimals, while negative places round to tens, hundreds and larger positions.
Because the rounding direction matters for negative values, the calculator labels each mode explicitly instead of assuming every task uses standard rounding.
Key features
- Nearest, up, down and truncate modes
- Decimal places from 0 to 10
- Round to tens, hundreds and beyond
- Works with positive and negative numbers
How to use
- 1Enter the number to round.
- 2Set the number of places and choose a rounding mode.
- 3Use a negative place for tens, hundreds or larger positions.
Frequently asked questions
- How do I round to the nearest hundred?
- Set decimal places to -2. A value such as 1,234.5 then rounds to 1,200 using nearest mode.
- What is the difference between down and truncate?
- Down moves toward negative infinity, while truncate removes extra digits and moves toward zero. They differ for negative values.
- What does round up mean?
- Round up uses the next value toward positive infinity at the selected precision.