Calculator Date Calculator
Three modes: days between dates, add/subtract days, and day-of-week finder.
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About this calculator
Three date tools in one. Days Between Dates gives the total gap in days, weeks, months, and years. Add/Subtract Days finds a new date by adding or removing a number of days. Day of the Week tells you what day any date falls on.
Common uses
- Counting days until a deadline, event, or trip
- Finding what day of the week a date falls on
- Calculating project durations and due dates
- Legal and contract date calculations
- Historical date research
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FAQ
- What can this date calculator do?
- Three things: find the number of days between two dates, add or subtract days from a date, and find what day of the week any date falls on.
- Does it account for leap years?
- Yes — all calculations handle leap years correctly.
- Can I calculate business days?
- The calculator returns total calendar days. Business day filtering is not yet supported.