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Date Calculator — Free Online
Date Calculator finds the number of days between two dates, adds days to a date, and tells you the weekday. It runs in your browser.
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✓ 100% free
✓ No sign-up
✓ No file upload
✓ Works in your browser
How to Date Calculator
- 1Open the Date Calculator.
- 2Enter the start and end dates, or a date to add days to.
- 3See the difference, new date and weekday.
- 4Adjust the values as needed.
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Why use Date Calculator?
Quickly counting days between dates or adding days saves manual calendar maths for deadlines and planning.
Common use cases
- Count days until a deadline.
- Find a due date by adding days.
- Check the weekday of a future date.
Tips
- Use it with the Age Calculator for ages.
- Double-check leap-year spans.
Frequently asked questions
How do I find the number of days between two dates?
Open the Date Calculator and enter the two dates to see the difference in days.
Is it free?
Yes, the Date Calculator is free.
Can it add days to a date?
Yes, you can add days to a date and see the resulting weekday.