Use the Days Between Dates Calculator
Calculate the number of days, weeks, months and years between two dates, or add and subtract days from a date. Optionally exclude weekends.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Your input
The actionA real example, step by step
Real data entered into the Days Between Dates Calculator, one screenshot per step. Nothing is mocked up.
Open the tool
The Days Between Dates Calculator opens ready to use, nothing to install or sign up for.
Enter your data
Real input used here: Start date 2026-11-13; End date 2026-12-13.
Press Add / subtract days
The Days Between Dates Calculator shows the result straight away, below the same form.
What is the Days Between Dates Calculator?
How many days until your holiday, deadline or birthday? Pick two dates and see the difference in days, weeks, months and years, plus a working-day count that excludes weekends.
Switch to add or subtract mode to find the date that is a given number of days, weeks or months before or after a start date, which is useful for due dates, notice periods and project planning.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Days, weeks, months and years.
Count weekdays only.
Find a date N days away.
Count inclusively when you need to.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
How many days are between two dates?
Enter both dates and the tool counts the days between them, excluding the start date by default.
How do I count only working days?
Tick the business days option to skip Saturdays and Sundays.
Does it handle leap years?
Yes. Leap days are counted correctly.
Can I find the date 90 days from today?
Yes. Use add mode with today's date and 90 days.
Does it count the end date?
Both start and end dates are shown; add one day if you need an inclusive count.
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