METHOD
How it is calculated
Complete calendar months and remaining days, with month-end clamping.
◷ Dates and time
Age calculator
Calculate calendar age on a chosen date.
01
Your inputs
Starting values are an example. Replace them with your own.
Your inputs stay in your browser.
02
Your result
Enter your details and run the calculation.
TRACEABLE
Sources and validity
Basic arithmetic or geometry using the formula shown. Uses only your inputs.
How we maintain data ↗