Endpoints are counted clearly
The between-dates result labels whether the end date is included. A deadline that “runs through” a day is different from one that ends the evening before.
Converters & calculators
The distance between two days.
Find out how many days until an event, what date a deadline lands on, or how long a project actually ran. Results are calculated locally and explained in plain language.
No upload. No account. The work happens in this browser tab. No account is needed, no copy is stored on a server, and the inputs remain yours.
Choose a calculation
Calculations use real calendar dates, including leap years. Business-day counts ignore public holidays. Everything stays in your browser.
Result
0days
The two dates are the same day.
- Calendar difference
- 0y 0m 0d
- Weeks
- 0
- Weekdays
- 0
- Weekend days
- 0
The input and result stay in this browser tab. There is no upload step and no copy stored on a server. How local processing works.
The short version
How it works.
No installer, no sign-up, and no second app to open. The work happens in the browser you already have, using the file already on your device.
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Choose the mode
Use “between dates” to measure a gap, or “add / subtract” to move forward or backward from a start date.
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Enter the dates
Pick the start and end dates, or the start date and the number of days, weeks, or months to add.
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Review the result
The tool shows the resulting date, total days, weekdays, and weekend days where relevant.
Fine print, without the runaround
Good to know.
Every tool has a boundary. These are the ones worth knowing before you start, so the result is not a surprise.
Working days exclude weekends
The weekday count does not include public holidays. Business deadlines may need a local holiday calendar as well.
Can I add months to a date?
Yes. When the target month is shorter, the result is clamped to its last valid day rather than rolling into the next month.
Does the calculator account for leap years?
Yes. It uses real calendar dates, so February 29 is handled correctly when it exists.
What is the difference between total days and working days?
Total days counts every calendar day in the range. Working days counts Monday to Friday only and does not subtract public holidays.
Next door
Related tools.
Most file jobs come in pairs. These three usually follow close behind.