How this calculator works
Round numbers to a chosen count of significant figures for scientific and technical work.
Formula
rounded value = toPrecision(sig figs)
Step-by-step
- Enter the number to round.
- Enter desired significant figures count.
- Calculate to get rounded and scientific forms.
Example
- Number = 0.00467891
- Sig figs = 3
Rounded = 0.00468
FAQs
Are trailing zeros significant?
They can be, depending on decimal placement and notation context.
How many sig figs should I use?
Use the precision required by your assignment, lab standard, or reporting rule.