Math
Rounding Calculator
Round a number to a chosen number of decimal places.
Free to use — no sign-up or login.
Result
This free Rounding Calculator covers Round a number to a chosen number of decimal places.
Rounding approximates a value by nearby numbers with fewer fractional digits. Related math tools sit beside How it works, with no account required.
Using the Rounding Calculator
Round a number to a chosen number of decimal places. Fill the labeled fields on the Rounding Calculator and read the result. The formula stays in How it works rather than being repeated here.
FAQ
How do I use the Rounding Calculator?
Enter the labeled values on the Rounding Calculator and read the output. Scale, round to nearest integer, then scale back.
What formula does the Rounding Calculator use?
The Rounding Calculator uses the identity in How it works. In words: Scale, round to nearest integer, then scale back.