Days Between Dates Calculator
Use this free days between dates calculator to find the exact number of days between any two dates. Perfect for deadlines, countdowns, event planning, contract periods, and more.
📅 Days Between Dates Calculator
Quick Presets:
How to Use the Days Between Dates Calculator
- Enter your start date
- Enter your end date
- Click Calculate to see the exact number of days between the two dates
Common Uses for the Days Between Dates Calculator
- Project deadlines: Find out how many working or calendar days remain
- Age milestones: How many days until your birthday or anniversary?
- Legal and financial: Calculate notice periods, contract durations, or payment terms
- Travel planning: Count the days between your departure and return dates
- Health tracking: Measure how long since a medical procedure or medication start
- Pregnancy: Count days since conception or last period
Days Between Common Date Ranges
| Period | Approximate Days |
|---|---|
| 1 week | 7 days |
| 1 month | 28–31 days |
| 3 months (1 quarter) | 90–92 days |
| 6 months | 181–184 days |
| 1 year | 365 days (366 in a leap year) |
| 2 years | 730–731 days |
Days Between Dates FAQ
Does this calculator include or exclude the end date?
By default, the calculator counts the total number of days between the two dates, not including the end date. For example, from 1 May to 10 May = 9 days.
How do I count only working days?
To count working days (Monday–Friday), divide the total calendar days by 7, multiply by 5, and adjust for any public holidays that fall within the period.
Can I calculate days between dates in different years?
Yes — this calculator works for any two dates regardless of how far apart they are, automatically accounting for leap years and varying month lengths.