Age in years, months, weeks, and days.
Tool · Last updated May 14, 2026
Age Calculator
Helpful for birthdays, eligibility checks, and time since a starting date.
The result is a planning aid, not legal or identity verification.
Birthdays, eligibility checks, and planning.
This is a planning aid, not an official record.
Result
Run the tool to see the answer here.
Quick take
See a person's age in years, months, weeks, and days.
How it works
Three quick actions, no wall of instructions.
Enter the dates
Set the birth date and the as-of date.
Read the breakdown
See the result in multiple time units.
Use it carefully
Confirm any formal rule separately.
Sample input
Sample output
32 years old
Gotchas
Treating the result as a legal or identity record.
Entering the as-of date before the birth date.
Ignoring leap-day edge cases when February matters.
Quick answers
Short answers for the edge cases people usually ask about.
What does it show?
A readable age or elapsed-time breakdown.
Can I use it as an official record?
Use it as a planning aid and confirm formal rules separately.
Need business days instead?
Use a weekday calculator instead.