Days Between Dates
Count the exact number of days between any two dates — plus weeks, months, years and weekday names.
Free Days Between Dates Calculator
Need to know how many days until a deadline, between two birthdays, or across a project timeline? Pick any two dates and get the exact day count instantly — along with the equivalent in weeks, approximate months and years, and the weekday each date falls on. Everything runs in your browser; nothing is uploaded.
📏 Exact Day Count
Real calendar math — leap years and month lengths handled automatically.
🔄 Weeks, Months, Years
See the same span expressed four ways at a glance.
🗓️ Weekday Names
Instantly know which day of the week each date falls on.
✅ Flexible Counting
Toggle "include end date" and enter dates in any order.
Frequently Asked Questions
The calculator takes the difference between the two calendar dates. By default the end date itself is not counted; tick "Include end date" to count both the start and end dates.
You still get the correct absolute difference, and a note tells you the dates were entered in reverse order. The result is identical either way.
Months use an average month length of 30.44 days and years use 365.25 days (accounting for leap years). For exact calendar months, try the Age Calculator instead.
Yes. The calculation is based on real calendar dates, so leap days like February 29 are counted automatically.
Yes — completely free, with no account required and no data sent to any server.