Math
Rounding Calculator
Round a number to a chosen number of decimal places.
The result is the number you entered shortened to the decimal places you chose, for easier reading or reporting.
Formula
Look at the digit after the last kept place: 5 or more rounds the kept digit up, less than 5 leaves it unchanged.
How it works
Enter a number and how many decimal places to keep. The calculator rounds using the usual half-up rule shown by toFixed.
Worked example
For example, 3.746 rounded to 2 decimal places = 3.75, because the digit after the second decimal place is 6.
FAQs
What does the Rounding do?
It takes the values you enter and works out the rounding for you, showing the result straight away.
What should I enter?
Enter ordinary numbers in the boxes above. If a value does not make sense for this calculation, the page will ask you to check it instead of showing a wrong answer.
Can I use the result for homework or everyday math?
Yes. It is a general-purpose math helper; for exam or professional work, still check the steps against your own working.
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