Days Between Dates Calculator
Count the number of days between two dates, plus the same gap expressed in weeks, months, and years. The results update as you type.
About Days Between Dates Calculator
Working out how many days fall between two dates by hand is fiddly because months have different lengths and leap years get in the way. This calculator does the counting for you from the two dates you pick.
It is useful for deadlines, countdowns, anniversaries, project planning, and checking how long ago something happened.
How to Use
- Pick the start date.
- Pick the end date, which defaults to today.
- Read the number of days between them, plus weeks, months, and years.
Frequently Asked Questions
Does it count leap years correctly?
Yes. The count is based on the actual calendar dates, so leap years and months of different lengths are handled automatically.
What do the months and years figures mean?
They are approximate, using an average month and year length, so they are a quick guide rather than an exact calendar count.
Is the tool private?
Yes. The calculation runs in your browser and nothing is uploaded.
About Matt George
I'm Matt George, a software engineer in the startup space. I run my own shop building software for early-stage founders, and I love making free tools and experiences that people actually use. Enjoy using Days Between Dates Calculator!