# Count and Sum Functions

The most used functions in Excel are the functions that count and sum. You can count and sum based on one criteria or multiple criteria.

### Count

To count the number of cells that contain numbers, use the COUNT function. Note: to count blank and nonblank cells in Excel, use COUNTBLANK and COUNTA.

### Countif

To count cells based on one criteria (for example, greater than 9), use the following COUNTIF function. Note: visit our page about the COUNTIF function for many more examples.

### Countifs

To count rows based on multiple criteria (for example, green and greater than 9), use the following COUNTIFS function. ### Sum

To sum a range of cells, use the SUM function. Note: visit our page about the SUM function for many more examples.

### Sumif

To sum cells based on one criteria (for example, greater than 9), use the following SUMIF function (two arguments). To sum cells based on one criteria (for example, green), use the following SUMIF function (three arguments, last argument is the range to sum). Note: visit our page about the SUMIF function for many more examples.

### Sumifs

To sum cells based on multiple criteria (for example, circle and red), use the following SUMIFS function (first argument is the range to sum). General note: in a similar way, you can use the AVERAGEIF function to average cells based on one criteria and the AVERAGEIFS function to average cells based on multiple criteria.