What is this calculator?
Round a number to a chosen number of decimal places.
What can you use it for?
Use it when solving an exercise, checking a result, or working with the particular quantities shown in this form. Round a number to a chosen number of decimal places.
How to use it
- Enter number.
- Enter decimal places.
- Select Calculate (or Generate for random tools).
- Read the answer and any additional results below the form. Check the units and the limits of the method.
Formula and method
Round to decimal places by scaling by 10^places
Half values are rounded away from zero.
Worked example
Number: 3.14159265, Decimal places: 2. The result is 3.14 (rounded number).
Assumptions and limits
Inputs and outputs must stay within the supported finite number range. Displayed decimal answers may be rounded.
Frequently asked questions
What inputs does the Rounding Calculator need?
Use number, decimal places. Read the answer and any additional results below the form. Check the units and the limits of the method.
What assumptions apply to the Rounding Calculator?
Inputs and outputs must stay within the supported finite number range. Displayed decimal answers may be rounded.