Google Sheets ISNUMBER Function: Syntax, Examples & Tips

value:
The value or expression that you want to test to determine if it is a number. This can be a cell reference, a number, or a formula that returns a value.

What is the ISNUMBER Function?

The ISNUMBER function in Google Sheets is a simple yet useful tool that checks whether a given value is a number. It returns TRUE if the value is a number and FALSE if it is not. This function is particularly helpful in data validation, error checking, and conditional formatting, allowing users to ensure that their data meets specific criteria.

In simpler terms, ISNUMBER helps you verify if a cell contains a numeric value, which can be crucial when performing calculations or analyses that require numerical data.

A Practical Example

Imagine you are working with a dataset that includes various types of entries, and you want to identify which entries are numeric:

Data Table:

You want to create a new column that indicates whether each entry is a number.

ISNUMBER Formula

To achieve this, you would use the ISNUMBER function as follows:

=ISNUMBER(A2)

In this formula:

• A2 is the cell containing the value you want to check.

Result of the Formula

When you apply the ISNUMBER formula to the Data Table, the output would look like this:

In this case, the ISNUMBER function correctly identifies which entries are numeric and which are not.

Why Use ISNUMBER?

ISNUMBER is beneficial because it provides a straightforward way to validate data types in your spreadsheet. It helps prevent errors in calculations and ensures that your data analysis is based on accurate numeric values. Additionally, it can be used in combination with other functions to create more complex logical tests.

Key Takeaways:

• ISNUMBER: A function that checks if a value is numeric and returns TRUE or FALSE.
• Data Validation: Useful for ensuring that data entries meet specific numeric criteria.
• Error Prevention: Helps avoid calculation errors by confirming that the data is in the correct format.
• Common Use Cases: Ideal for data cleaning, validation, and preparing datasets for analysis.

ISNUMBER is an essential function for anyone working with data in Google Sheets, providing a simple way to enhance data integrity and reliability.

Happy spreadsheeting!