Rounds a number to one decimal place, the standard “nearest tenth” rounding question.
How it works
The number is multiplied by 10, rounded to the nearest whole number, then divided back by 10 to land on one decimal place.
What this does not include
This does not include significant-figure rounding — for that different concept, use this site’s significant figures calculator instead.
How to use this calculator
- Enter a number.
Frequently asked questions
What happens with a number exactly halfway, like 2.25?
Standard rounding rounds halfway values up, so 2.25 rounds to 2.3.
How is this different from significant-figure rounding?
Rounding to the nearest tenth always keeps exactly one decimal place regardless of the number’s size; significant figures count precision from the first nonzero digit instead, which can mean a different number of decimal places depending on magnitude.
Where is rounding to the nearest tenth commonly needed?
Everyday measurements, grades, and any context where one decimal place of precision is the expected format.
