Toolkit / Date & Time Tools
Age Calculator
Calculate age from a date of birth, including years, months, days, and upcoming birthday details.
Privacy note: Date and time calculations run in your browser and usually do not require personal information.
Limitations: Age rules for legal, school, or program eligibility can vary by jurisdiction or institution.
Age Calculator
Calculate age in years, months, and days using browser date math.
Years
26
Months
4
Days
2
How age calculator works
Enter a birth date and optional target date, then Toolkit calculates the age on that date.
Use it for forms, milestones, age checks, school planning, or personal reference.
Privacy
Date and time calculations run in your browser and usually do not require personal information.
Limitations
- Age rules for legal, school, or program eligibility can vary by jurisdiction or institution.
- Leap-day birthdays may be handled differently by official policies.
- Date entry format and timezone can affect edge cases around midnight.
FAQs
How is age calculated?
Age is calculated by comparing the birth date with the target date and counting completed years, months, and days.
Can I calculate age on a future date?
Yes, use a future target date to estimate age for an event, deadline, or application.
How are leap-year birthdays handled?
Leap-day birthdays can have special legal or institutional rules, so verify official requirements when it matters.
Can I use this for eligibility?
Use it as a guide, then confirm the exact rules from the organization requiring the age check.