Age Calculator
Calculating age accurately requires respecting leap years and varying month lengths (28, 29, 30, or 31 days). This tool provides an exact breakdown of completed calendar years, months, and days.
Calculated Result
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Formula & Mechanics
Age = Target Date - Date of Birth (accounting for leap years and month boundaries)
The calendar difference evaluates whole elapsed years first, whole remaining months second, and final elapsed days third.
Worked Step-by-Step Example
Scenario: Born on March 15, 1995 evaluated on October 16, 2026.
- Years: 1995 to 2026 = 31 years (as of March 15, 2026)
- Months: March 15 to September 15 = 6 months
- Days: September 15 to October 16 = 31 days
Age is 31 years, 7 months, and 1 day.
Frequently Asked Questions
How are leap years handled?
The algorithm evaluates the Gregorian calendar rules where century years are only leap years if divisible by 400.
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