ISNUMBER Function in Google Sheets

Determine if a value is numeric using the ISNUMBER function.

ISNUMBER Function

The ISNUMBER function in Google Sheets is used to check if a value is numeric.

Syntax

ISNUMBER(value)
  • value: The value or expression you want to test. This is a required parameter.

Example

  1. Numeric Value Check

Check if a cell contains a number:

=ISNUMBER(A1)

This will return TRUE if A1 contains a numeric value.

Notes

  • Returns TRUE only for numeric values.
  • Useful for validating data types in spreadsheets.
  • ISTEXT: Check if a value is text.
  • ISLOGICAL: Check if a value is a logical value (TRUE or FALSE).