Age at Death Calculator

Calculate a person’s exact age at death from their birth and death dates, for genealogy and records.

LiveAgeURL: /age-at-death-calculator

Enter your values

Report error

Did we solve your problem today?

How to use this calculator

Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.

Notes for genealogy

Gravestones and old records often state age as years, months and days, calculated the same way. Dates before 1752 (Britain and its colonies) or 1582 (much of Catholic Europe) may be in the Julian calendar; convert both dates to the same calendar before calculating.

Frequently asked questions

How do I calculate age at death?

Subtract the birth date from the death date in years, months and days, borrowing a month when the days are negative.

About this tool

Written by
[Author: to be assigned]
Reviewed by
Formula tests passed · human review pending
Last updated
31 Oct 2026

See our methodology and editorial policy. Think something’s off? Report an error with this tool.

Related tools

All Date & Time
Live

Age Calculator

Calculate exact age in years, months and days from a date of birth, plus total days lived and your next birthday.

Age
Live

Dog Age Calculator (Dog Years)

Convert your dog’s age to human years with the AVMA rule of thumb and the 2019 UC San Diego DNA-based formula.

Age
Live

Chronological Age Calculator

Calculate chronological age in years, months and days for test scoring, with the calendar or 30-day-month method.

Age