Date & Time Calculators
Calculate age, count days between dates, find business days, convert time units, and more.
Age Calculator
Find your exact age in years, months, days from your birthdate.
Days Between Dates
Count the exact number of days between two dates.
Date Difference Calculator
Find the difference between dates in years, months, and days.
Business Days Calculator
Count working days between dates, excluding weekends.
Time Difference Calculator
Calculate the difference between two times.
Time Duration Calculator
Calculate total duration between start and end date/time.
Decimal Hours Calculator
Convert decimal hours to HH:MM:SS and vice versa.
Add Days to Date
Find a future date by adding days to a start date.
Subtract Days from Date
Find a past date by subtracting days.
Days Until Calculator
How many days until a specific date from today.
Days Since Date Calculator
Count days since a past date.
Weeks Between Dates
Count the number of weeks between two dates.
Months Between Dates
Count months between two dates.
Work Hours Calculator
Calculate total work hours from clock-in/out times.
Time Card Calculator
Calculate weekly hours and pay from time card entries.
Overtime Calculator
Calculate overtime pay and total earnings.
Sleep Calculator
Find optimal bedtime or wake-up time based on sleep cycles.
Day of Week Calculator
Find what day of the week any date falls on.
Date Calculator
Add or subtract days, weeks, months from any date.
Working Days Calculator
Count working days between two dates.
Weekday Calculator
Find what day of the week any date falls on.
Leap Year Calculator
Check if a year is a leap year.
Week Number Calculator
Find the ISO week number for any date.
Quarter Calculator
Find which fiscal quarter a date falls in.
Date to Day Calculator
Get day of week, day of year, and week number for any date.
Years Between Dates
Calculate exact years, months, and days between two dates.
Hours Calculator
Add multiple time entries in hours and minutes.
Hours to Minutes Calculator
Convert hours (including decimals) to minutes.
Minutes to Hours Calculator
Convert minutes to hours and minutes.
Minutes to Seconds Calculator
Convert minutes to seconds.
Seconds to Minutes Calculator
Convert seconds to minutes and seconds.
Time Addition Calculator
Add hours, minutes, and seconds to a time.
Time Subtraction Calculator
Subtract hours, minutes, and seconds from a time.