Significant Figures Calculator

Count sig figs and round to any precision.

Result

Significant figures4
Rounded to 3 sf0.00456

Significant Figures Calculator — FAQs

Sig fig rules?

Non-zeros always count; zeros between non-zeros count; leading zeros never count; trailing zeros count only with a decimal point. 0.004560 = 4 sig figs.

Need a Custom Tool Built?

We build calculators, estimators and internal tools for businesses in the UK and North America.

Get a Quote

Embed this Significant Figures Calculator on your site

Free to use — paste this snippet into any webpage. It auto-resizes and includes a small attribution link. Add ?theme=dark to the iframe URL for dark mode.