Random Birthday Generator
Generate a random birthday from an age range, a date range or just a month and day. Make one fictional date of birth or a batch of up to 1,000, with optional zodiac signs, birthstones and useful date details.
- No sign-up
- Age and date filters
- Copy and export results
Choose a range and generate
Set the date limits that fit your task, choose how many birthdays to create and select Generate birthday. Use More options to control the month, duplicates, February 29 and the details shown.
Random Birthday Generator
Pick your range. Find a birthday. Make it part of your story.
Loading the birthday tool. If the controls stay disabled, refresh the page or check your JavaScript settings.
A DATE FOR YOUR NEXT IDEA
Let chance choose.
Your birthday will appear here.
For stories, games and sample data. Not identity information.
Your birthdays
Select View to use a birthday in the card above. Exports include the entire batch.
| # | Birthday | Age | Weekday | Card |
|---|
How dates, ages and privacy work
Every eligible calendar date has an equal chance. This is not a simulation of real-world birth rates. Dates use the Gregorian calendar from 1900 through today; future birth dates are excluded. Age mode uses completed years based on the date shown above.
February 29 birthdays advance in age on March 1 in non-leap years here. This is a software convention, not a legal age rule. Zodiac labels use approximate Western sun-sign dates for entertainment, not an astronomical birth chart. Birthstones are traditional month associations.
Generation, exports and card creation run in your browser. This plugin does not send dates to our server, use cookies, or save results between visits. Sharing sends the selected fictional birthday to the app you choose, or copies it for you. Hosting, analytics or other site plugins may collect separate data. Never enter a real person’s private birth date for sharing.
Note: Results are randomly generated sample dates, not verified personal information. Full-date results can include age and weekday; month-and-day-only results do not include either.
How to generate random birthdays
You can start with the default settings or narrow the results to a particular age group, date interval or birth month. The generator chooses dates only from the eligible range.
- Select a mode. Choose Age range, Date range or Month & day.
- Enter the limits. Set the ages or dates, then select a batch size between 1 and 1,000.
- Adjust the output. Pick a date format and, if needed, open More options to change the month, order, duplicate rules and zodiac/birthstone display.
- Generate and use the result. Copy one birthday, save its image card or export the full batch to CSV or JSON.
Which birthday mode should you use?
Choose the mode based on what you know about the date you need. Each mode uses different limits.
Age range
Set the youngest and oldest ages. The generator picks full dates of birth that correspond to those completed ages today. Useful for fictional profiles and age-field testing.
Date range
Choose a start and end date. This works well when you need birthdays from a particular decade or another defined period, rather than ages relative to today.
Month and day
Generate a birthday such as 14 June without assigning a birth year. Because a year is missing, the generator does not calculate an age or weekday in this mode.
What does a generated birthday include?
A result starts with a calendar date. Depending on the mode and the settings selected, you can also see the completed age, day of the week, Western zodiac sign and traditional birthstone.
| Result detail | When it appears | What it means |
|---|---|---|
| Birthday | All modes | A random full date or a month/day pair, shown in the selected format. |
| Age | Full dates only | Completed years as of the current date, following the tool’s leap-day rule. |
| Weekday | Full dates only | The calendar weekday on which the selected full date falls. |
| Zodiac sign | When enabled | An approximate Western sun-sign label based on the birthday’s month and day. |
| Birthstone | When enabled | A traditional gemstone associated with the birth month. |
| Copy, image card, CSV or JSON | As available for the result or batch | Ways to reuse the selected birthday or export the generated list. |
You can choose long, ISO, US or UK date formatting. If you need more detail about sign dates or gemstones, see the zodiac dates guide and birthstone by birthday chart.
What can you use random birthdays for?
Characters and games
Assign birthdays to novel characters, game avatars or role-playing campaigns. An age and zodiac label can help keep a fictional character profile consistent.
Forms and app testing
Create sample dates for testing registration forms, age filters and date formats. Try age boundaries and February 29 when checking validation rules. These results are synthetic examples, not actual user records.
Spreadsheets and prototypes
Generate a list of birthdays and export CSV for spreadsheet work or JSON for a mock application. Check the date format expected by your software before importing a file.
Classroom and party activities
Pick birthdays for a calendar-ordering exercise, a fictional class register or a guessing game. Full dates also let you compare the chosen weekdays.
For appointments, schedules or other dates that do not represent birthdays, use the Random Date Generator instead.
How does the birthday generator choose dates?
The tool selects randomly from eligible calendar dates within your chosen limits. Each eligible date has an equal chance of being selected. This means a generated batch is not a model of how often people are actually born on a particular day or month.
The date calculations use the Gregorian calendar, with full dates from 1900 through the current day. Future dates are excluded. Age mode calculates completed years relative to today.
If February 29 is enabled, it can appear in a leap year. For someone born on February 29, this tool advances their age on March 1 during non-leap years. Other systems and legal rules may use a different convention.
Random birthday generator questions
Can I generate a random birthday with a zodiac sign?
Yes. Enable Show zodiac and birthstone in More options. The tool uses approximate Western sun-sign dates to label a generated birthday. This is a conventional sign lookup, not an astronomical birth chart.
Can I generate 100 or 1,000 birthdays at once?
Yes. Set How many birthdays? to the quantity you need, up to 1,000 per batch. You can copy the list or export it as CSV or JSON. If unique dates are required, the available date pool must be large enough.
Can I generate a birthday without a year?
Yes. Select Month & day to return only the day and month. The tool cannot show age or weekday without a birth year.
Are the dates based on real birthday statistics?
No. The generator selects eligible dates with equal probability. Real-world birth frequencies vary by date, so its output should not be treated as a sample of actual births. For population statistics, use published birth datasets instead.
Can I prevent duplicate birthdays?
Yes. Open More options and enable No duplicate birthdays in this batch. For full dates, uniqueness applies to the entire date; for Month & day mode, it applies to month/day combinations.
Can February 29 appear?
Yes, when Allow February 29 is enabled and a leap-day date is eligible. For completed-year age calculations, the tool treats March 1 as the age change date in non-leap years.
More ways to work with birthdays and dates
Page guidance by Saifee. Feature descriptions reflect the settings shown by the Random Birthday Generator plugin; calculations and exports should be rechecked after plugin updates.
Every feature on Random Birthday Generator is designed to make random date generation simple, useful and transparent. We regularly review the tool, supporting content and date calculations to keep the experience accurate and easy to understand for creative, educational and testing purposes.
SAIFEE
