How it works
Significant figures start at the first non-zero digit. Keep the requested number of digits, then use the following digit to round the last retained one.
Numbers and notation
Significant Figures Calculator
Enter a positive or negative decimal value and choose how many meaningful digits should remain.
Your result0.00457
Value rounded to 3 significant figures.
- Order of magnitude
- 10^-3
- Requested precision
- 3
Understanding your result
Significant figures express measurement precision independently of the decimal point position. For example, 0.00450 contains three significant figures.
Last verified:
03FAQ
Frequently asked questions
All non-zero digits count. Zeros between significant digits count, while leading zeros do not.