Rounding Calculator

Round any number to a chosen number of decimal places, significant figures, or the nearest ten, hundred or thousand.

Rounding calculator

Round to

Rounded: —

Difference from the original: —

The second box sets decimal places or significant figures, and is ignored for the nearest ten, hundred or thousand.

Enter the number you want to round.
Choose decimal places, significant figures, or the nearest ten, hundred or thousand.
Set the count if you picked decimals or significant figures, then read the result.

Common questions about the free online rounding calculator.

Choose decimal places, enter the number, and set the count to two. The result is rounded to the nearest hundredth.

Choose significant figures and enter how many you need. The tool keeps that many meaningful digits and replaces the rest with zeros.

Select nearest ten and the number is rounded to the closest multiple of ten, with exact halves rounded away from zero.

Values exactly halfway are rounded away from zero, so 2.5 becomes 3 and minus 2.5 becomes minus 3.

Yes. The same menu offers nearest hundred and nearest thousand, as well as decimal places and significant figures.

No. The original value stays as typed and only the displayed result is rounded, so you can adjust the settings freely.

Decimal places count digits after the point, while significant figures count meaningful digits from the first non-zero digit.

Yes. Negative values are rounded using the same rules, and the sign is preserved in the result.

No. Rounding happens locally in your browser and the numbers you enter are never uploaded.

Last updated: October 10, 2026