Math · NUMORA
Sig Figs Calculator
Round to N significant figures.
Open interactive calculatorHow to use
Also shows scientific notation.
Formula
round(x, sig) via order of magnitude
FAQ
Is this Sig Figs calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Also shows scientific notation.
Related calculators
- Percentage calculatorPercent, part, whole — solve any one.
- Percentage Change calculatorHow much something moved from old to new.
- Decimal To Fraction calculatorFinite decimals to lowest terms.
- Fractions calculatorAdd, subtract, multiply, divide, then simplify.
- Prime Factors calculatorFactor an integer and write the exponents.
- Decimal Hex calculatorThe programmer's everyday bases.
- Roman Numerals calculatorConvert 1–3999 both ways.
- Final Grade calculatorWhat you need on the final to hit a target.