🔍 Significant Figures Calculator
Count the significant figures in a number and round to a specified number of sig figs.
What Are Significant Figures?
Significant figures (sig figs) are the meaningful digits in a number that contribute to its precision. Rules: all non-zero digits are significant, zeros between non-zero digits are significant, leading zeros are not significant, and trailing zeros after a decimal point are significant.
Why Sig Figs Matter
In science and engineering, significant figures indicate the precision of a measurement. When performing calculations, the result should be rounded to match the least precise input. This prevents reporting false precision in experimental results.
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