What is this tool?
A date calculator finds days between two calendar dates or counts forward/backward for deadlines and project plans.
How to use
Enter start and end dates in YYYY-MM-DD format. Use it for D-day countdowns, rental periods, or sprint lengths.
Benefits
- Simple interval math without spreadsheets.
- Mobile-friendly inputs.
- Works alongside Age and Time tools.
FAQ
Are leap years included?
Yes. Day differences use the Gregorian calendar, including leap days.
Can I add weeks or months?
This tool focuses on day intervals between two fixed dates.