Date & Time
Free Date & Time calculators with instant results, clear explanations and worked examples — no sign-up, available in 9 languages.
All Date & Time calculators
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Anniversary Countdown Calculator
How long you've been together down to the day, the traditional gift for each year, and a countdown to your next anniversary.
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Project Deadline Planner — Phase Schedule & Buffer Calculator
Schedule project phases in working days from a start date, skip weekends and holidays, and see whether you’ll hit the deadline — with a Gantt timeline and buffer. Free.
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Meeting Timezone Fairness Calculator — Best Time Across Zones
Find the fairest meeting time for a global team. Enter each person's UTC offset and rank every slot by how evenly it shares the off-hours burden. Free, no DST guesswork.
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Nth Weekday of the Month Finder
Find the exact date of the 1st–5th or last Monday, Thursday, etc. in any month and year — like the 3rd Thursday of November.
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Time Card Calculator with Overtime — Weekly Hours & Pay
Add up weekly hours from daily clock-in and clock-out times, subtract breaks, and calculate overtime and pay under FLSA or California rules. Multi-currency, free.
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Business Days Calculator — Working Days Between Two Dates
Count working days between two dates excluding weekends and US/UK public holidays, or add and subtract business days. Custom holidays and a calendar view. Free.
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