✓ Effortless Math · Free Tool

Rounding & Significant Figures Calculator

Round any number to the nearest 1000, 100, or 10, to a whole number, to a place value, to a chosen number of decimal places, or to significant figures — with full step-by-step working.

Rounds to the nearest target; exact halfway cases go away from zero: 2.5 → 3 and -2.5 → -3.
Number round to Round to N

Enter a number and choose what to round to. For decimal places or significant figures, also enter N. Decimals and negatives are fine.

Results

Rounded value
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Rounding target
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Digit examined
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Round up or down?
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Original number
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Step-by-step