Calculate exact age in years, months, and days from a birth date.
Find someone’s precise age on today or any as-of date. Useful for forms, eligibility checks, and milestones.
We walk calendar months carefully so month lengths and leap days are handled correctly.
If so, the tool will show an invalid range rather than a negative age.
Enter the birth date and optional as-of date in ToolVera’s age calculator. It returns a calendar-accurate breakdown that handles month lengths and leap years.
Age is based on the calendar dates you enter, not a live clock. For legal or eligibility cutoffs, use the official as-of date required by the form or jurisdiction.
Get exact age in years, months, and days from a birth date. Free browser age calculator from ToolVera — no signup.
Read: Calculate Age from Date of Birth Online →Calculate percentages, reverse percentages, and percent change.
Calculators
Find the difference between two dates in days, weeks, and more.
Calculators
Convert Unix timestamps to dates and back using your local timezone.
Developer Tools
Convert length, weight, and temperature units instantly in your browser.
Calculators
Calculate profit, margin %, and markup from cost and revenue.
Business Tools
Compute sale price, savings, and optional tax from a discount %.
Business Tools