Dates & Time Calculators
Free date and time calculators: exact age on any date, business days between two dates, days between dates and work hours with breaks and overnight shifts.
Dates & Time Calculators: all tools
About these dates & time tools
Dates look simple until a leap year, a weekend or a night shift gets in the way. These calculators do the counting for you and show the working, so you can trust the answer on a form, a contract or a timesheet.
Find your exact age in years, months and days, count business days between two dates with your own weekend pattern and holidays, measure the gap between any two dates, or add up shift hours with unpaid breaks. Everything runs in your browser and nothing you enter is stored.
Frequently Asked Questions (FAQs)
Use the Business Days Calculator. It counts weekdays between two dates or adds working days to a start date, and lets you set your own weekend days and a list of holidays to skip.
Use the Age Calculator on a specific date. Enter the date of birth and the date you need the age on, and it returns years, months and days plus your next birthday.
Yes. The Time Duration Calculator handles overnight shifts and subtracts unpaid breaks, so the total hours are correct even when the end time is earlier than the start time.