Select Two Dates
About this calculator
Pick two dates and this calculator instantly shows how many days apart they are, along with the same gap in weeks, months and hours. It also tells you which date comes first.
It is built for quick answers: how many days since an event, how many days left on a contract, how long a trip or a course lasts. There is no button to press, since the numbers update as soon as you change either date.
How to use it
- Choose the Start Date.
- Choose the End Date.
- Read the days apart, weeks plus days, approximate months and hours.
Calculation
Days apart = |End − Start|. Weeks are Days ÷ 7 with a remainder in days, months are Days ÷ 30.44 rounded, and hours are Days × 24.
Worked example
1 January 2025 to 8 November 2026
| Days apart | 676 |
| In weeks | 96 weeks + 4 days |
| In months | about 22 |
| In hours | 16,224 |
The span includes the leap-free year 2025 and almost all of 2026, which is why the days divide into 96 full weeks.
Tips and common mistakes
- The count excludes the end date. Add one if your agreement counts both ends.
- Use the weeks-and-days view to plan in sprints or pay cycles.
- Months are approximate because they are not a fixed number of days.
- For business days only, use the Working Days Calculator.
- Use the Date Calculator to find the date that falls N days from a start.
Frequently asked questions
How many days are there between two dates?
Subtract the earlier date from the later one.
Does the calculator include the last day?
No. The count runs up to, not including, the end date.
Can I see weeks too?
Yes, as full weeks plus remaining days.
What is 90 days from a date?
Use the Date Calculator to add 90 days and see the resulting date.
How many hours are in 676 days?
676 × 24 = 16,224 hours.
Do leap years change the answer?
Yes. A leap day adds one to any span that contains it.