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Significant Figures Calculator

Count significant figures, convert to scientific notation, and round numbers to any number of sig figs.

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Count significant figures and perform sig fig operations

Enter a Number

Significant Figures

All non-zero digits are significant. Trailing zeros after decimal are significant.

Scientific Notation

4.5670 × 10⁻³

Decimal Places

Rounded to 3 Sig Figs

0.00457

Rounded to 2 Sig Figs

0.0046