Calculate Age in the Past or Future
Sometimes you need to know your age on a date other than today. You may want to check your age when you started school, signed a document, attended an event, or reached a future milestone.
The Age Calculator lets you use a custom comparison date, making it easy to calculate age for either a past event or a future plan.
Three Simple Steps
- Enter your complete date of birth.
- Enter the date on which you want to measure your age.
- Review the result in years, months, and days.
The comparison date must be later than the birth date. If it is earlier, there is no valid age interval and the dates should be checked.
Finding Your Age on a Future Date
You can calculate how old you will be at graduation, at the start of a particular year, or on an upcoming trip. Remember that your age in completed years increases on your birthday, not automatically on January 1.
Finding Your Age on a Past Date
A past comparison date can reveal your exact age when an important personal event happened. This is useful for reviewing records and building accurate timelines.
Always use documented dates and check that the day and month have not been reversed. When ready, calculate your age on any date.