Significant Figures Calculator
Count the number of significant figures in any number. Convert to scientific notation and round to N sig figs.
Enter the number exactly as written (trailing zeros and decimal points matter)
How to Use This Significant Figures Calculator
- 1Enter the number exactly as written (trailing zeros matter)
- 2Set how many significant figures to round to
- 3Click Calculate to see sig fig count and scientific notation
Formula
Significant figures are counted based on rules: all non-zero digits are significant, zeros between non-zero digits are significant, and trailing zeros after a decimal point are significant.
Frequently Asked Questions
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About Significant Figures Calculator
The significant figures calculator counts sig figs in any number, converts to scientific notation and rounds to your desired number of significant figures. Essential for chemistry, physics and engineering courses.