Number Format Helper
Generate custom number and date format codes for Google Sheets and Excel. Preview live.
Runs in your browser
No account needed
Free forever
Format
#,##0.00
Displayed as
1,234,567.89
Common Formats
About Number Format Helper
Custom number format codes in spreadsheets control how values appear without changing the underlying data. This tool helps you build and preview format codes for currencies, percentages, dates, times, and custom patterns — then copy the code to paste directly into Format Cells.