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Time & date calculators

Exact chronological age, days and working days between dates, and net working hours.

Find optimal wake-up times or bedtimes based on 90-minute sleep cycles plus the time you need to fall asleep.

Calculate how many hours of sleep you are short of your personal target across a run of nights.

Calculate your fasting hours and eating window from the clock times of your last and first meals.

Calculate actual days and hours worked in a year (after subtracting holidays, leave and sick days) and your implied hourly pay.

Calculate your exact chronological age today in full years, months and days from your date of birth.

Count calendar days, weeks and weekdays (Mon–Fri) between two dates, or add/subtract days from a start date.

Calculate hours and minutes between two clock times minus a break, or add minutes to a starting time.

Count working days between two dates (excluding weekends and Polish public holidays) or add working days to a start date.