Date & Time Calculators
Date and time calculators for every need. Days between dates, working days, countdowns, time zones, Unix timestamps, week numbers, leap years, and time arithmetic.
Date Difference Calculator
Calculate the exact number of days, weeks, months, or years between two dates.
Working Days Calculator
Calculate working days between two dates excluding weekends and holidays.
Days Until Calculator
Calculate exactly how many days until any future date or event.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Week Number Calculator
Find the ISO week number for any date and the dates in that week.
Time Duration Calculator
Calculate the duration between two times and add or subtract time.
Time Zone Converter
Convert times between any world time zones instantly.
Leap Year Calculator
Check if a year is a leap year and find the next leap year.
Age From Date Calculator
Calculate age or time elapsed from any past date to today.
Time Add & Subtract Calculator
Add or subtract hours, minutes, and seconds from any time.
Retirement Date Calculator
Calculate the exact date you can retire based on age and savings.
Business Hours Calculator
Calculate total business hours between two dates.
Shift & Hours Worked Calculator
Calculate hours worked in a shift and weekly pay.
Holiday Countdown Calculator
Count down to major holidays and see days remaining.
Moon Phase Calculator
Find the moon phase for any date past or future.