Date & Time
Age Calculator
Calculate your exact age in years, months, and days from your date of birth. Also shows total days lived and days until your next birthday.
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Date & Time Calculators
Calculate date differences, add or subtract days, and convert between time zones
16 free calculators
Date & Time
Date Difference Calculator
Calculate the exact difference between two dates in years, months, days, total days, and total weeks.
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Date & Time
Time Duration Calculator
Calculate the duration between a start time and end time in hours, minutes, and total minutes. Handles overnight time spans automatically.
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Date & Time
Days Until Calculator
Calculate how many days, weeks, months, and hours remain until a target date. Perfect for countdowns to events, deadlines, and milestones.
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Date & Time
Business Days Calculator
Calculate the number of business days (Monday through Friday) between two dates. Shows total days, business days, and weekend days separately.
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Date & Time
Time Zone Converter
Convert a time from one UTC offset to another. Enter a time and the source and destination UTC offsets to see the converted time and time difference.
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Date & Time
Hours Calculator
Calculate total hours and net hours worked between a start and end time, with optional break time deduction in minutes.
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Date & Time
Time Card Calculator
Calculate total hours, regular hours, overtime hours, and gross pay from time card entries. Overtime is calculated at 1.5x for hours exceeding 40 per week.
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Date & Time
Event Countdown Calculator
Count down to any event with precision. See exactly how many days, hours, minutes, and seconds remain until your target date and time.
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Date & Time
Work Hours Calculator
Calculate total work hours for any period. Enter your daily hours and number of work days to get total hours, minutes, and equivalent weeks.
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Date & Time
Bedtime Calculator
Calculate ideal bedtime or wake time based on 90-minute sleep cycles. Wake up feeling refreshed by timing your sleep to complete full cycles.
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Date & Time
Retirement Countdown Calculator
Count down to your retirement date. See exactly how many years, months, days, and working days remain until you retire.
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Date & Time
Birthday Calculator
Discover fascinating facts about your birthday. Find out what day of the week you were born, your zodiac signs, age, and days until your next birthday.
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Date & Time
Day of the Week Calculator
Find the day of the week for any date, past or future. Perfect for planning events, historical research, or satisfying curiosity.
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Date & Time
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Works with timestamps in seconds or milliseconds, showing UTC and local time.
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Date & Time
Leap Year Calculator
Determine if any year is a leap year using the Gregorian calendar rules. See the next and previous leap years and understand why leap years exist.
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