Generate date range

Generate an inclusive UTC date sequence with daily, weekly, or clamped monthly steps.

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ToolDate Range Generator
Input
Output
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Preview

How it works

Strict YYYY-MM-DD endpoints become UTC midnights before each step adds one day, seven days, or one calendar month clamped to that month’s last date. ISO or fixed English labels are emitted until the inclusive end or the 1,000-entry ceiling.

  • Daily ISO output is selected because it is the least ambiguous interchange form.
  • Both endpoints remain explicit; no open-ended schedule or inferred duration is created.

Worked example

Weekly Dates in Q1
Generate weekly dates for the first quarter of 2025
Input
											Start date: 2025-01-01
End date: 2025-03-31
Step: week
Format: iso
Output
												2025-01-01
2025-01-08
2025-01-15
2025-01-22
2025-01-29
2025-02-05
2025-02-12
2025-02-19
2025-02-26
2025-03-05
2025-03-12
2025-03-19
2025-03-26

When to use this

API fixtures enumerate reporting dates, rota drafts list weekly anchors, and billing checks produce successive monthly dates.

Edge cases

  • 2025-01-31 advances to 2025-02-28, and the next sequential month begins from that clamped date.
  • 2025-02-31 is rejected instead of normalizing into March.
  • A range needing more than 1,000 rows stops at the safety cap before reaching its requested end.

References