Days Between Dates calculates the exact number of calendar days separating two dates. Months have 28, 29, 30, or 31 days, which makes counting manually error-prone — especially across month and year boundaries. Enter a start and end date and get the answer instantly. Useful for Net 30/60 invoice deadlines, sprint duration, contract periods, subscription lengths, and any situation where you need an exact day count rather than an approximate "about two months".
The calculator converts both dates to Unix timestamps (milliseconds since January 1, 1970), subtracts the smaller from the larger, and divides by 86,400,000 to get the number of days. This approach handles month length differences and leap years automatically — the JavaScript Date object already encodes the Gregorian calendar rules, so no manual leap year logic is needed.
Yes. The calculator uses the JavaScript Date object, which follows the Gregorian calendar rules — February has 29 days in leap years (years divisible by 4, except century years not divisible by 400), and this is accounted for automatically in every calculation.
No — the result is the number of elapsed days between the two dates, not including the end date. January 1 to January 2 is 1 day. If you need inclusive counting (e.g., for hotel nights where check-in and check-out both count), add 1 to the result.
No. Both dates are normalized to midnight (00:00:00) in the calculation, so timezone differences do not affect the day count. The result is always a whole number of calendar days.
Yes. The calculator returns the absolute difference — if the end date is earlier than the start date, you still get the correct positive day count between them.
No. The calculation runs entirely in your browser. Nothing is sent over the network, and no dates are stored or logged.
Calendar days count every day including weekends and public holidays. Business days exclude weekends (and sometimes holidays). This calculator counts calendar days. If you need business day counts, use a dedicated business days calculator that can account for weekends and regional holidays.
Tool workspace
Free days between dates calculator online — find the exact number of days between any two calendar dates. Handles leap years automatically. No login.
Input
Start: 2024-01-01 | End: 2024-03-01
Output
60 Days
