Math
Significant Figures Calculator
Round a number to a given count of significant figures.
Free to use — no sign-up or login.
Result
This free Significant Figures Calculator covers Round a number to a given count of significant figures.
Significant figures keep the leading meaningful digits of a measurement. Related math tools sit beside How it works, with no account required.
Using the Significant Figures Calculator
Round a number to a given count of significant figures. Fill the labeled fields on the Significant Figures Calculator and read the result. The formula stays in How it works rather than being repeated here.
FAQ
How do I use the Significant Figures Calculator?
Enter the labeled values on the Significant Figures Calculator and read the output. Scale so the first digit is in a known place, round, then scale back.
What formula does the Significant Figures Calculator use?
The Significant Figures Calculator uses the identity in How it works. In words: Scale so the first digit is in a known place, round, then scale back.