Calendar days
A day-difference tool measures elapsed calendar days between date boundaries. Inclusive counts and exclusive elapsed time are different concepts.
Business days
Our business-day tools count Monday through Friday and do not automatically know public holidays for every jurisdiction.
Months and years
Calendar months and years cannot always be replaced by a fixed number of days because month lengths and leap years vary.
Related working tools
Date Time
Days Between Dates
Calculate the number of calendar days between two dates.
Open tool → Date TimeBusiness Days Calculator
Count Monday-through-Friday days between two dates, excluding weekends.
Open tool → Date TimeMonths Between Dates
Calculate complete calendar months and remaining days between two dates.
Open tool → Date TimeYears Between Dates
Calculate complete calendar years, months, and days between two dates.
Open tool →