Days Between Dates

A days between calculator is a tool that counts the exact number of days between two dates. It's also called a date difference calculator or simply a days calculator. Enter a start date and an end date above, and it works out the total days, plus the weeks, months, and business days, handling leap years and different month lengths for you.

Subtract the earlier date from the later one. The clean way is to convert both to a day count and take the difference, which is exactly what this tool does, so leap years and month lengths don't trip you up. From January 1 to June 17, 2026 there are 167 days. Type your two dates above and you'll get the number instantly, along with the weeks, months, and business days.

By default it doesn't, so January 1 to January 2 reads as 1 day, the gap between them. Flip the include end day toggle and it counts both endpoints, so the same pair reads as 2 days. Use the plain count for things like interest or notice periods, and the inclusive count when every calendar day matters, like a hotel stay or an event run.

Business days are the weekdays, Monday through Friday, with Saturday and Sunday left out. This tool counts them between your two dates, which is handy for shipping windows, contract terms, and payment deadlines that ignore weekends. It doesn't subtract public holidays, since those differ by country and state, so trim those off yourself if your deadline depends on them.

The tool divides the total days into whole weeks plus leftover days, and it also shows the span as years, months, and days using the calendar. So 167 days is 23 weeks and 6 days, or 5 months and 16 days. The two views answer different questions: weeks for scheduling, and the calendar breakdown for how the gap reads on a calendar.

Yes. Put today in the first box and your target in the second, and you'll see how many days until it arrives, like a countdown to a holiday, due date, or deadline. It works backward too, since you can drop in any two dates in either order and the tool sorts out which is earlier, so the day count is never negative.

Count from the start date up to the end date. From June 19 to July 19 there are 30 days, since June runs 30 days and you land on the same day number a month later. Drop any two dates into the boxes above, in either order, and the tool returns the exact figure along with the weeks and business days for that span.

Put the past date in the start box and today in the end box, and the tool counts the days since it, updating live as the date rolls over. It's the quick way to answer something like how many days since a birthday or a start date. From March 1 to July 1, 2026, for example, the gap is 122 days. It runs the other way too, so you can just as easily count the days until a date that's still ahead.

Yes to both. There's no sign-up, no cap on how often you use it, and nothing to install, because it works right in the tab. The dates you type never leave your device, so nothing gets sent anywhere. Bookmark it and you've got a quick way to measure any date gap whenever you need one.