Rounding Calculator
Round numbers to decimal places, significant figures, or a nearest place value using standard, upward, downward, or truncate rounding.
Results
Use this Rounding Calculator to round a number by decimal places, significant figures, or nearest place value. The tool also supports standard, upward, downward, and truncate rounding methods.
Standard Rounding Method
For standard rounding, identify the digit at the required place and check the digit immediately to its right.
- If the next digit is 5 or greater, increase the rounding digit by 1.
- If the next digit is below 5, leave the rounding digit unchanged.
Example
Round 18.379 to two decimal places.
The hundredths digit is 7. The next digit is 9, so the 7 rounds up to 8.
18.379 ≈ 18.38
Important Note
Rounding produces an approximate value rather than changing the original number. Different rounding methods may produce different results, particularly for negative numbers or values exactly between two rounding points.