Days Between Dates
Calculate the exact number of days, weeks and months between any two dates.
Results
Need to figure out how many days are between two dates for a project deadline, vacation countdown or contract duration? Enter your start and end dates and get an instant breakdown in days, weeks and months. Whether you are counting down to a wedding, calculating a lease term in days or checking how many days until your flight, this tool does the math in one click.
Explore all our date difference calculator tools, or browse the full time and date converters & calculators.
Frequently asked questions
Enter both dates above and the calculator instantly shows the exact number of days. It accounts for varying month lengths and leap years, so you get the precise count every time.
Yes. The calculator uses the JavaScript Date engine which correctly handles leap years (an extra day on February 29 every 4 years, except centuries not divisible by 400). This means February 28 to March 1 in a leap year counts as 2 days.
Use our dedicated Business Days Calculator for weekday-only counting. This tool counts all calendar days including weekends and holidays.
Absolutely. Enter any start and end year combination. The tool works across years, decades or even centuries - useful for historical date research, long-term contract calculations and genealogy.
A standard year has 365 days and a leap year has 366 days. For rough estimates, 365.25 days per year accounts for leap years. Our calculator uses exact calendar dates so you never need to estimate.