Significant Figures Calculator

Use our free significant figures calculator to round any number to a specified number of significant digits.

Math

Number

Significant Figures

Formula

Significant figures are the meaningful digits in a number. Round any number to a specified number of significant digits using standard rounding.

Result = round(N, sigFigs)

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

Result: 3.14

Significant figures (sig figs) are the digits that carry meaningful information about the precision of a number.

Trailing zeros in a decimal number are significant. For example, 3.140 has 4 significant figures.

CalculateMe Team

Last updated: 2026-07-13