Work out someone's exact age in years, months and days — for forms, eligibility checks and 'how old is grandma really?' moments.
The Age Calculator gives you someone's exact age today in years, months and days from a birthdate — the number a passport office, insurance form or ticket booking asks for, not the rounded number you'd say out loud. It also shows total days lived, which is what people actually want when they're planning a milestone birthday, a retirement date, or working out whether a child qualifies for a school year.
Handles leap years correctly, which matters for anyone born on or near 29 February and for age cutoffs that fall on the last day of a month. Useful for HR checking probation periods, parents checking school-entry rules, and anyone who's ever had to confidently write down 'age on the day of the exam / flight / appointment' rather than 'age at their next birthday'.
Exact age in years, months, and days, accounting for varying month lengths and leap years.
Enter any past date to calculate time elapsed.
Yes, correctly accounts for leap years.
Yes, enter any past date to calculate time elapsed.
Get your BMI and the WHO weight category from your height and weight — the same number your doctor's chart uses.
Solve the three percentage questions people actually get stuck on: X% of Y, what percent X is of Y, and the change from X to Y.
Generate random dates within a range
Sort a restaurant bill: pick a tip percentage, split by the number of people, and see what each person owes.