Date & Time Calculators
Compare dates, count working days, measure elapsed time, convert minutes to hours, and plan across time zones. These tools use explicit start, end, duration, or offset inputs so you can distinguish calendar differences, clock intervals, age calculations, and work-hour totals without mixing their separate rules.
What can you calculate here?
Choose a focused tool below for a transparent, shareable result backed by the method and sources shown on its page.
Date Calculator
Count the days between two dates, with business days, weeks, and a years-months-days breakdown that lands exactly on your end date. Leap years handled.
Age Calculator
Calculate age in completed years, months and days for any explicit comparison date, with exact elapsed days and the next birthday shown.
Time Calculator
Time Calculator combines entered hours and minutes into a total minute value.
Hours Calculator
Hours Calculator converts an entered minute total into decimal hours for time comparison.
Time Card Calculator
Time Card Calculator returns worked hours from clock-in and clock-out times for one shift.
Time Duration Calculator
Time Duration Calculator returns elapsed hours from entered start and end times.
Time Zone Calculator
Time Zone Calculator shifts an entered hour by the selected UTC offset.
Day Counter
Day Counter returns the calendar-day difference between entered start and end day numbers.
Day of the Week Calculator
Day of the Week Calculator maps an entered day number to its weekday index.