Random Birthday Generator
Generate random date-of-birth values in your browser with custom age ranges and date formats.
Generator Settings
Generate 1 to 200 birthdays at once.
Allowed range: 0 to 120 years.
Generated Birthday Results
Adjust settings and click "Generate Birthdays" to start.
Frequently Asked Questions
How do I target a specific age range?
Set minimum and maximum ages and the generator returns birthdays that fall inside that range today.
Which date formats can I get?
Multiple common formats, so output drops straight into spreadsheets, databases or API mocks.
What is it useful for?
Building mock user profiles, QA datasets and demographic test cases without hand-inventing dates.
Are these real people birthdays?
No. Dates are randomly generated and are not tied to any real individual.
How many birthdays can I generate at once?
You can generate up to 100 birthdays in a single batch. Enter any count from 1 to 100, click generate, and the full list appears instantly. For larger QA datasets, run the generator repeatedly or copy each batch into your spreadsheet until you reach the volume you need.
Does the generator include February 29 birthdays for leap years?
Yes, February 29 appears whenever the selected age range covers a leap year such as 2020 or 2024. Roughly 1 in 1,461 dates is a leap day, so expect about 0.07 percent of results to land on it. If your test data cannot handle leap days, regenerate or filter those rows.
Can I export the generated birthdays to a CSV file?
Yes, click the download button to save results as a CSV file, or use copy to clipboard to paste them into Excel, Google Sheets, or a test fixture. Each row contains one date in your chosen format, so 100 birthdays export as 100 rows ready for import.
Are the generated birthdays stored or sent to a server?
No. All generation happens locally in your browser using JavaScript, so no birthdays, age ranges, or settings are transmitted or logged anywhere. You can even use the tool offline once the page loads, which makes it safe for internal test data and mock profiles.
How It Works
The generator picks a random date between two boundaries derived from your min and max age.
Each result is deterministic for format output but generated with browser-side randomness for testing use.
Usage Notice
Generated birthdays are synthetic test data. Do not use them for identity fraud or deceptive activities.