Date & Time Calculators
Calculate ages, date differences, countdown days, time durations, decimal hours, world clock times, and DST transitions — all free and instant.
Calculate your exact age in years, months, and days based on your date of birth. Also shows age in total days, weeks, hours, and minutes.
Add or subtract days, months, and years from a specific date to find a past or future date.
Find the exact time difference between any two dates and times — in days, hours, minutes, and seconds.
Count the number of days between two dates, including or excluding weekends and holidays.
Easily calculate total hours and minutes between two times — great for work shifts, billing, and timesheets.
Add or subtract hours, minutes, and seconds from a given time. Supports 12-hour and 24-hour formats.
Convert time to decimal hours, minutes, seconds, and days with payroll rounding and batch timesheet conversion.
World clock with auto timezone detection, alarm clock, countdown timer with progress ring, and stopwatch with lap times — all in one tool.
Live time across 20 cities worldwide with IST difference badges, time-of-day color coding, meeting time planner, and LocalStorage persistence.
Find your exact years of service and next work anniversary date. Tracks milestones (1, 3, 5, 10, 15, 20, 25, 30 yr) with badge generator and countdown in Advanced mode.
Check daylight saving time status for 50+ cities worldwide. Get DST transition dates, UTC offsets, and days until next clock change. Includes 4-city meeting time planner and country DST history reference.