Generate Valid Calendar Dates

The Generate Valid Calendar Dates Tool creates a complete list of valid calendar dates between any two years. You can customize the output format, pick the interval (e.g., every 1 day or 7 days), and even shuffle the result. Whether you’re generating demo data, filling dropdowns, or preparing test cases, this tool gives you instant, flexible output.

With support for multiple formats and step sizes, the Generate Valid Calendar Dates Tool updates live and includes export and copy functionality.

Total items: 0
Options
Shuffle output

How to Use:

  1. Select the Start Year and End Year using the dropdowns.
  2. Choose the Date Format you want:
    • YYYY-MM-DD (e.g., 2024-01-01)
    • DD/MM/YYYY (e.g., 01/01/2024)
    • MM/DD/YYYY (e.g., 01/01/2024)
  3. Set the Step Size for how often to generate a date:
    • Options: every 1 day, 7 days, 30 days
  4. Toggle Shuffle Output if you want the date order randomized.
  5. Click Generate and view the output in the right-hand box. It updates instantly and flashes.
  6. Use Copy Output or Export to File to save the results.
  7. Use Clear All to reset everything.

What Generate Valid Calendar Dates Tool can do:

This tool generates valid dates between two years using your selected:

  • Output format
  • Step interval
  • Optional shuffled order

It ensures that every date is properly calculated, formatted, and displayed with live updates and complete export options.

Example:

Start Year: 2024
End Year: 2025
Format: DD/MM/YYYY
Step: 7 days

Output:
01/01/2024
08/01/2024
15/01/2024
...
25/12/2025

Common Use Cases:

Use this tool to fill dropdowns for date inputs, generate scheduled test data, build repeating time series, or populate tables with clean and valid date records. It’s ideal for frontend developers, data engineers, and testers who need bulk calendar dates in a specific format.

Useful Tools & Suggestions:

If you’re building a range, Generate a Date Sequence helps lay out those valid dates in order. And for the other side of the coin, Generate Invalid Calendar Dates is useful when testing how things break.

Related Tools