Random Birthday Generator
Choose the first and last possible birthday, then generate one date locally in your browser.
Both bounds are included. Use this only as a fictional or test date; it does not identify a real person.
A QUICK WALKTHROUGH
How to use this tool
- Set an inclusive start and end date.
- Generate a random birthday.
- Use the displayed date as a fictional or test value.
Inclusive calendar range
Both the start and end dates can be selected. Leap days are included whenever they fall inside the range.
Secure browser randomness
The browser crypto API supplies random values with rejection sampling to avoid bias. This is suitable for fictional or test dates, not identity verification.
Local processing
Dates are generated in this browser and are not uploaded or stored. Do not use the result to infer a real person’s identity or date of birth.
GOOD TO KNOW
Common questions
Is the end date included?
Yes. The selected range is inclusive at both ends.
Can it generate February 29?
Yes, when February 29 falls within the selected range.
Is this a real person lookup?
No. It only creates a fictional random date and does not identify or infer anyone.