Random Birthday Generator
Generate random birth dates instantly with exact age calculation. Create dates by age range or birth year for testing, characters and sample data.
Click Generate to create a birthday
About this tool
Use our Birthday Generator to create random birth dates based on a specific age range or a year interval of your choice. You can set an age range such as 18–30 years or a period like 1984–2000. The tool also automatically calculates the exact age in years, months and days.
Features
Main Applications
- Software TestingGenerate realistic birth dates to test age validations and date fields.
- Character & Game CreationCreate believable birth dates for fictional characters, NPCs and worldbuilding.
- Sample Data & ResearchProduce fictitious demographic data for mockups, prototypes and studies.
- PrivacyUse a generated date as a placeholder when real data should not be shared.
How to Use This Tool
Choose a Mode
Select 'By age range' to generate a birthday for someone of a given age, or 'By birth year' to restrict the result to a specific decade or period.
Set the Range
Enter the minimum and maximum values — either ages or years — to define the window for the random date.
Generate and Copy
Click 'Generate Birthday'. The result shows the date of birth and the exact calculated age. Use the copy button to copy the generated date.
Common Examples
- •Young adult character: set age range 18–25 to generate a birth date for someone currently between 18 and 25 years old.
- •Millennial dataset: set year range 1981–1996 to generate birth dates within the millennial generation.
- •Senior NPC: set age range 60–80 to generate a birth date for an elderly character in a story or game.
- •Baby boomer sample: set year range 1946–1964 to create test data for a baby boomer demographic.
Questions and Answers
Choose the generation method: by age range (for example 25–35 years) or by birth year interval (such as 1990–2000). Enter the minimum and maximum values and click 'Generate Birthday'. The tool instantly creates a random birth date and calculates the exact age based on today's date.
This generator is ideal for developers testing age validations, writers and designers creating realistic characters, database administrators generating test data, and educators or researchers.