Days Between Dates Calculator
Calculate the exact number of days between two dates, including weeks, months, and time units.
Quick Presets
Total Days
days
Breakdown
years, months, days
Weeks
Months
Hours
Minutes
Seconds
Frequently Asked Questions
How do I count the number of days between two dates?
Subtract the earlier date from the later date. Most date calculations handle varying month lengths and leap years automatically. For example, from January 15 to March 10 is 54 days (16 days in Jan + 28 in Feb + 10 in Mar). Online calculators simplify this for any date pair.
Should I count business days or calendar days?
Calendar days include all days including weekends and holidays. Business days (or working days) exclude weekends and sometimes public holidays. Shipping estimates, legal deadlines, and payment terms often specify which type. This calculator can show both for convenience.
How do I calculate days including or excluding the end date?
Inclusive counting counts both the start and end dates (e.g., Monday to Friday = 5 days). Exclusive counting does not count the end date (Monday to Friday = 4 days). Legal and contractual contexts vary; check the specific requirement. This calculator shows both options.