This finds the exact number of days between two dates, handling different month lengths and leap years automatically. Enter a start and an end date and get a precise count instantly, without counting through a calendar by hand. It handles the same calculation for a gap of a few days or a gap of several decades equally well.
How to use it
- Select the start date.
- Select the end date.
- Read the number of days between them.
- Swap which date is earlier or later to see it from either direction.
- Change either date anytime to recalculate instantly.
When it helps
- Working out how many days remain until a deadline or a trip.
- Calculating a project's or a rental's length between a start and end date.
- Checking how many days have passed since a specific event.
- Verifying a contract or warranty's exact day count.
- Planning a schedule that depends on a precise number of days between two points.
Good to know
- The result is the absolute number of days between the two dates, no matter which one you enter first.
- Be clear on whether you need an inclusive or exclusive count for something like a rental period, since this counts full calendar days.
- This works across any span, including multiple years, and accounts for every leap year in between.
- For a recurring annual event, remember to update the year in your end date, since entering a past date for this year will show a result that's already passed.
- If you're calculating how long a subscription or a trial period lasts, double check whether the end date itself counts as part of the period or as the day right after it ends, since providers handle this differently.
Inclusive counting
Decide whether your count should include both the start and end dates. Hotel nights, loan terms and legal deadlines can each use a different convention, so check the rule that applies.
Questions
Does the count include both the start and end date?
It returns the number of calendar days elapsed between them. If you need an inclusive count that includes both days, add one depending on your specific use.
Can I calculate across different years?
Yes, it works correctly across any span, including multiple years, and accounts for every leap year in between.
What if I enter the end date before the start date?
It shows the absolute difference regardless of which one is chronologically first.
Does this account for time zones?
This compares calendar dates directly without factoring in specific times or zones, so it's best suited to whole day differences.
Can I calculate business days instead of calendar days?
This calculates total calendar days including weekends. A business days only calculation would need to separately exclude weekends and any relevant holidays.
Can I calculate the difference between two dates in different years?
Yes, it handles any span of time correctly, including gaps of many years, accounting for every leap year that falls within the range.