Significant Figures Calculator
Count significant figures, round numbers, and perform sig-fig arithmetic.
Number
Significant Figures: 4
0.004560
Highlighted digits are significant.
Round to N Significant Figures
sig figs
Result: 0.00456
Significant Figures Rules
- All non-zero digits are significant.
- Zeros between non-zero digits are significant.
- Leading zeros are not significant.
- Trailing zeros after a decimal point are significant.
- Trailing zeros in a whole number without a decimal point are ambiguous (treated as not significant here).
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