Date & Time Calculators

Free hours calculator. Add up the hours and minutes between a start and end time, minus breaks — perfect for timesheets and work hours.

Free age calculator. Find your exact age in years, months and days from your date of birth, plus total days lived and next birthday.

Free date difference calculator. Count the days, weeks, months and years between any two dates, including business days.

Free countdown calculator. Find exactly how many days, weeks and months remain until any future date or event.

Free time calculator. Add or subtract hours and minutes, and convert the result into days, hours, minutes and decimal hours.

Find your dog's Lap Day — the exact date your dog becomes 'older' than you in dog years. Enter both birthdays to get the date.