DateSpan Date Calculator

DateSpan Date Calculator turns everyday calendar questions into clear, local results. Measure the exact distance between two date-times, move a deadline forward or backward, count working days, inspect any date, or track a target countdown—without creating an account.

DATE AND TIME SPANS
• Compare two dates with optional clock-time precision
• See calendar years, months, days, hours, minutes and seconds
• Review totals in weeks, days, hours, minutes and seconds
• Reverse the inputs without hiding the direction

ADD OR SUBTRACT
• Move a date by years, months, weeks, days, hours and minutes
• Use real calendar rules for month ends and leap years
• See the resulting date, time and weekday instantly

WORKDAYS AND DATE FACTS
• Count Monday–Friday workdays in an inclusive range
• Separate calendar, working and weekend-day totals
• Find weekday, ISO week number, day of year and quarter
• Check leap-year status and remaining days in the year

COUNTDOWNS
• Measure future or elapsed target dates
• See total days, whole weeks, extra days and target weekday

PRIVATE BY DEFAULT
Core calculations run on your device. DateSpan does not require an account, calendar access, contacts, location or cloud storage. Network access is used only when the advertising SDK requests an ad.

DateSpan supports Gregorian calendar dates from year 1600 through 3000. Working-day results treat Monday through Friday as working days and do not infer public holidays. Always confirm contractual, financial or legal deadlines with the relevant authority.