Time & dates calculators
Months have 28, 29, 30 or 31 days. We counted so you don’t have to.
Days between dates, age, countdowns, time zones, timesheets, business days and week numbers.
Dates
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Days Between Dates Calculator
Count the days between two dates, and see it in weeks and months too. e.g. Days between = 358 days -
Age Calculator
Your exact age in years, months and days, and when your next birthday is. e.g. Age = 35 years -
Countdown to a Date Calculator
How many days until a date, from today. -
Add or Subtract Days from a Date
Find the date a number of days, weeks, months or years from any date. -
What Day of the Week Was It?
The day of the week for any date, past or future, and the same date in coming years. e.g. Day of the week = Sunday -
Business Days Calculator
Count working days (Monday to Friday) between two dates. e.g. Business days = 21 days -
Week Number Calculator
Find the ISO week number of any date. e.g. Week number = 11 -
Leap Year Calculator
Whether a year is a leap year, and the leap years before and after it. e.g. Leap year? = Yes -
German Working Days Calculator
How many working days there are between two dates in any German state. e.g. Working days = 253 days -
Dog Age Calculator: Dog Years to Human Years
How old your dog or cat is in human years, by size, not the old times-seven rule. e.g. In human years = 39 -
Age Difference Calculator
The exact age gap between two people, in years, months and days. -
Baby Age Calculator
How old your baby is in weeks, months and days, and the corrected age if born early.
Hours and clocks
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Hours Between Times Calculator
Work out the hours between two times, including overnight shifts and breaks. e.g. Time worked = 8 h 00 min -
Time Zone Converter
What time it is in another city, on any date, with daylight saving time included. e.g. Time there = 13:00 -
Timesheet Calculator: Weekly Hours
Add up a week of shifts, with breaks, in hours and minutes and decimal hours. e.g. Total hours = 37 h 45 min -
Time Duration Calculator
Add or subtract hours, minutes and seconds. e.g. Result (h:mm:ss) = 4:15:00 -
Military Time Converter (24-Hour Clock)
Convert between 24-hour military time and 12-hour am/pm time, either way. e.g. In 12-hour time = 5:30 pm -
Time Unit Converter
Convert between seconds, minutes, hours, days, weeks, months and years. -
Unix Timestamp Converter
Convert a Unix timestamp to a date and time in UTC, or a date to a timestamp. -
Speed, Distance and Time Calculator
Find the travel time, the distance or the average speed from the other two. e.g. Travel time = 3 h 00 min -
Road Trip Time Calculator
How long a drive really takes with breaks, and when you will arrive. e.g. Trip time = 6 h 3 min -
Time Saved by Driving Faster Calculator
How much time driving faster really saves on a trip, minute by minute. e.g. Time saved = 10 min
