Significant Figures Calculator
Identify the number of significant figures in a value and round it to any number of sig figs online. Ideal for lab data and science homework, computed locally in your browser.
Enter a value to detect significant figures, optionally rounding to a given count
Identification rules
Rules: leading zeros are not counted; zeros between non-zero digits are counted; trailing zeros after a decimal point are counted; trailing zeros in an integer without a decimal point are not counted.
Rules: leading zeros are not counted; zeros between non-zero digits are counted; trailing zeros after a decimal point are counted; trailing zeros in an integer without a decimal point are not counted.