Split Date into Intervals

Need to break a range of calendar dates into equal steps? The Split Date into Intervals Tool lets you generate a clean list of dates between any two points, spaced by a fixed number of days. Whether you’re creating project checkpoints, time series entries, or timeline events, this tool gives you total control over the format and interval.

It updates instantly and supports ISO, US, and long-form date outputs.

Total intervals: 0
Options

How to Use:

  1. Select a Start Date and End Date using the calendar pickers.
  2. Enter a Step (days) value to determine how many days between each date.
  3. Choose a Format:
    • YYYY-MM-DD (ISO)
    • MM/DD/YYYY (US-style)
    • Jan 1, 2023 (Long format)
  4. Click Split to generate your date list.
  5. Use Copy Output to copy results or Export to File to download them.
  6. Click Clear All to reset the tool.

What Split Date into Intervals Tool can do:

  • Generates a date sequence with a consistent daily interval
  • Works with custom start and end dates
  • Lets you define how often each date occurs (e.g. every 2 days)
  • Supports 3 clean output formats
  • Updates live as you adjust inputs
  • Includes export and clipboard copy options

Example:

Settings:

  • Start: 2023-01-01
  • End: 2023-01-10
  • Step: 3 days
  • Format: YYYY-MM-DD

Output:

2023-01-01
2023-01-04
2023-01-07
2023-01-10

Common Use Cases:

This tool is ideal for project scheduling, charting date-based intervals, automating timeline steps, or generating test data. It replaces the need for manual date entry or complicated spreadsheet formulas and gives you clean, accurate results in seconds.

Useful Tools & Suggestions:

If you’re working with time too, Split Time into Intervals helps you break things down on the clock side. And to see the bigger picture, Visualize Date Intervals lays out those chunks in a way that’s easy to scan.

Related Tools