Portable AgeCalc 2.0 | 2.02 MB This program calculates the exact period between variable start and end dates. This gives a person's exact age on a given date or exact date intervals for legal or other purposes. Results can be displayed as years-months-days, months-days or days only. Dates checked and the results are retained by the history function and can be printed. US, UK, and international date formats are supported.