What if start date is after end date?
The tool returns an input error so you can fix the date range.
Data
Random Date Generator
Create random dates within a custom range for testing, seeding databases, or generating demo data. Choose output format and how many dates you need — up to 20 per run.
Generated output
Select a date range and click Generate to create random dates.
How it works
The generator converts your start and end dates to millisecond timestamps, then picks n uniformly distributed random values in that range using Math.random. Each timestamp is converted back to a Date object and formatted to your chosen convention — ISO (YYYY-MM-DD) for technical/international use, US (MM/DD/YYYY) for American formats, or EU (DD/MM/YYYY) for European formats. Results are output one date per line, ready to copy into a spreadsheet, test fixture, or seed script.
Practical example
You are seeding a demo database and need 10 realistic customer registration dates spread across 2024. Set start date to 2024-01-01, end date to 2024-12-31, count to 10, and format to ISO. Results might include: 2024-03-14, 2024-07-22, 2024-11-05 — distributed naturally across the year for a realistic dataset.
Frequently asked questions
Answers to common questions about this generator and how it works.
Can I generate multiple dates at once?
Yes. Increase the count value to generate up to 20 dates per run.
Can I copy all generated dates?
Yes. Copy to clipboard includes each generated date on a new line.
Which output format should I choose?
ISO is best for technical workflows. US and EU formats are useful for region-specific documents.
Can I use this for mock datasets?
Yes. It is useful for generating realistic test dates for reports, forms, and analytics demos.
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