Date difference calculator
Count calendar days, weeks and weekdays between two dates.
Teams, travellers, students and event planners
Calculate date gaps, deadlines, working days, ages, shifts, countdowns and timestamps. Handle date-only calculations carefully around weekends and time zones, with clearly labelled local and UTC results where they matter.
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Every result stays on your device unless a page explicitly says otherwise.
Count calendar days, weeks and weekdays between two dates.
Add or subtract calendar or working days from a starting date.
Count weekdays between dates with optional inclusive counting and holiday dates.
Build a timed event agenda or run sheet from activities, durations and optional changeover time.
Review renewal dates, costs and cancellation-notice deadlines in one sorted schedule.
Work out paid shift duration after breaks, including overnight shifts.
Create a live day, hour, minute and second countdown to a chosen moment.
Calculate calendar age, total days lived and time until the next birthday.
Popular tasks
Turn activities and durations into start and finish times.
Sort renewals, costs and cancellation-notice deadlines.
Add or subtract calendar or working days from a chosen date.
Calculate date gaps, deadlines, working days, ages, shifts, countdowns and timestamps.
Inputs, formula or processing method, examples and important limitations are explained on every tool page.
Handle date-only calculations carefully around weekends and time zones, with clearly labelled local and UTC results where they matter. Tools give an estimate or transformation; you remain in control of the final decision.
Need a deeper workflow?
The Premium suite adds 20 advanced forecasting, audit, data and document tools. Guests can try 1 run; a verified free account gets 3 per rolling 24 hours.