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- Business Days & Countdown Calculator | Skip Weekends.
Count calendar or business days between two dates, exclude custom weekend patterns and holiday lists, and jump forward.
- Speed–Distance–Time Calculator with Pace & ETA.
Calculate speed, distance, or time from the other two.
- Best Meeting Time Across Time Zones | Time Zone Meeting.
Find the best meeting time across time zones using working-hour overlap, ranked suggestions, and a shareable meeting.
- Birth Year Calculator from Age & Reference Date.
Estimate possible birth years and date-of-birth range from an age and a reference date.
- Date & Time Calculators: Days Between, Business Days.
Calculate days between dates, add/subtract time, count business days, and convert time zones. Browser-only.
- Event Countdown (Time Remaining).
Show time remaining until a target date/time with an analog + digital display.
- Microwave Wattage Time Converter | 1000W to 700W, 800W, 900W.
Enter the label wattage and cooking time to convert it to your microwave.
- Military Time Converter: 24 Hour to 12 Hour, AM/PM.
Convert military time to AM/PM and AM/PM to 24-hour time instantly.
- Recurring counter: counts in range, next date, Nth.
Count how many times a recurring event happens in a date range.
- Week Number & Fiscal Year Calculator | ISO Week & Quarter.
Find ISO week numbers, calendar quarters, and fiscal years for any date.
- Work Hours & Overtime Pay | Shifts, Breaks & Gross Pay.
Estimate worked time, overtime hours, and gross pay from shift start/end times, unpaid breaks, or known total hours.
- World Clock Board (Multiple Time Zones).
Compare multiple city times with analog + digital clocks, work-hour highlights, shareable URLs, and JSON.
Featured
Popular date & time tools picked for quick access.
- Age Calculator (How old am I?) from Date of Birth.
Find your exact age from date of birth in years, months, and days, plus days until your next birthday. Optional.
- Date Difference Calculator (days, business days, Y/M/D).
Compute days between dates, count business days and working hours, and see a year‑month‑day breakdown.
- Time Duration Calculator | Add or Subtract Hours, Minutes.
Add or subtract time durations for work hours, shifts, breaks, overtime, and task totals.
- Time Zone Converter (Instant World Clock).
Enter a date and time to convert between time zones, with automatic daylight‑saving shifts, presets for major cities.
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Pick the right date & time tool
Use this hub when you know the job but not the exact calculator yet. Open one path below, finish that task, then return only if you need a second step.
- Count days or compare two dates: start with Date Difference.
- Skip weekends or add working days: open Business Days.
- Check age from date of birth or a reference date: use Age Calculator.
- Convert a meeting time across cities: go to Time Zone Converter or Meeting Planner.