How to Use the ISNUMBER Function in WPS on Windows

Last updated:July 20, 2026

Use ISNUMBER through 3 how-to topics, all available directly in WPS Spreadsheet; choose a topic from the index and follow the steps in order.

How-to Index

No.TopicMembership
11. Enter and use the ISNUMBER functionFree
22. Fill in arguments with syntax promptsFree
33. Use ISNUMBER in cross-sheet or nested formulasFree

How-to Guide

1. Enter and use the ISNUMBER function

Entry point: Formula tab → formula bar

  1. Open WPS Spreadsheet and select the cell where you want to show the result.
  2. Type = in the formula bar or directly in the cell.
  3. Type ISNUMBER(.
  4. Enter the cell reference, value, or expression that you want to test.
  5. Type the closing parenthesis and press Enter to view the result.

Success Criteria

  • On-screen result: the target cell shows TRUE or FALSE.
  • What you can do next: you can copy the formula, fill it down, or combine it with other functions.

Tips While Using

  • Common mistake: if you do not start with =, the content may be treated as plain text.
  • Environment note: the formula must be entered in an editable spreadsheet cell.

2. Fill in arguments with syntax prompts

Entry point: function input prompt in the formula bar

  1. Select the target cell and type =ISNUMBER(.
  2. Watch for the syntax prompt that appears while you type.
  3. Enter the correct argument based on the prompt.
  4. Check that the parentheses are complete, then press Enter.

Success Criteria

  • On-screen result: a function syntax prompt appears during formula entry.
  • What you can do next: the formula calculates normally and returns a result.

Tips While Using

  • Common mistake: missing parentheses or incorrect argument placement can cause a formula error.
  • Environment note: syntax prompts appear while you are actively editing a formula.

3. Use ISNUMBER in cross-sheet or nested formulas

Entry point: formula bar

  1. Type =ISNUMBER( in the target cell.
  2. Select a referenced cell from another worksheet, or continue by entering a nested function.
  3. Complete the argument and add the closing parenthesis.
  4. Press Enter to view the result.
  5. Change the source data and confirm that the result updates automatically.

Success Criteria

  • On-screen result: the cross-sheet or nested formula returns TRUE or FALSE.
  • What you can do next: when referenced data changes, the result updates accordingly.

Tips While Using

  • Common mistake: selecting the wrong referenced cell can make the test target inaccurate.
  • Environment note: for cross-sheet references, make sure the referenced sheet exists and contains valid data.