What is a Date Difference Calculator?
A date difference calculator calculates the exact time between two dates. It shows the difference in years, months, weeks, and days, as well as total days, hours, and minutes.
This is useful for planning events, tracking project timelines, calculating age, or determining how long until an important date.
Precise Breakdown
Years, months, weeks, and days
Total Days
See the exact number of days between dates
Hours & Minutes
Get precise time calculations
Any Date Range
Past or future dates supported
Common uses for date difference calculators:
- Age calculation — How old am I in days?
- Event planning — Days until a wedding, vacation, or deadline
- Project tracking — Time elapsed since project start
- Anniversary dates — Weeks, months, or days since an important date
About Our Date Calculator
Calculate the time between any two dates with our free date difference calculator. Get results in multiple formats including years, months, days, hours, and minutes.
With our calculator, you can:
Calculate exact time between any two dates
See results in multiple units (days, weeks, months, years)
Use past or future dates
Quickly swap dates to reverse calculation
Frequently Asked Questions
How many days are between two dates?
Enter your start and end dates above to see the exact number of days. The calculator counts all calendar days between the two dates.
Does it count the start or end date?
The calculator shows the difference between the two dates. If you need to include both dates, add 1 to the total days result.
How are months calculated?
Months are calculated based on calendar months, not a fixed number of days. This accounts for varying month lengths (28-31 days).
Can I calculate future dates?
Yes! Enter today's date as the start and a future date as the end to see how long until that date. This is great for countdowns.
How many weeks in a year?
There are 52 weeks and 1 day in a regular year, or 52 weeks and 2 days in a leap year. Use dates exactly one year apart to verify.
Quick Date Facts
| Time Period | Days | Hours |
|---|---|---|
| 1 Week | 7 days | 168 hours |
| 1 Month (avg) | 30.44 days | 730 hours |
| 1 Year | 365 days | 8,760 hours |
| Leap Year | 366 days | 8,784 hours |
| 1 Decade | 3,652 days | 87,648 hours |
Use our date calculator above to find the exact time between any two dates for planning, tracking, or curiosity.