Rounding numbers is a common task that comes up often when working with data in Excel. Fortunately, there's an easy formula to handle this task efficiently and quickly. The ROUND function in Excel can be used to round numbers to the nearest whole number, tenth, hundredth, thousandth, or any other place.

For example, if you have a number like 3.15 and you want to round it to the nearest tenth, you could use the ROUND formula like this: =ROUND(3.15, 1). This would return 3.2, which is the nearest tenth of 3.15. Likewise, if you wanted to round to the nearest hundredth, you would use =ROUND(3.15, 2), which would return 3.15.

The ROUND function also lets you round numbers up or down. If you have a number like 3.75 and you want to round up to the nearest integer, you could use the formula =ROUNDUP(3.75, 0) which would return 4. On the other hand, if you wanted to round down to the nearest integer, you could use the formula =ROUNDDOWN(3.75, 0) which would return 3.

In addition to the ROUND function, there are a couple of other rounding formulas that you can use in Excel. These include the ROUNDUP and ROUNDDOWN functions, as well as the even more powerful MROUND function, which rounds to multiples of a given number.