Pick two dates to see the exact gap in days, weeks, months, and years. Swap, flip, or share the range in one click.
Whether you are sizing up a holiday, tracking a contract, or settling a debate about someone's birthday, this calculator gives a clean answer in every unit that matters — plus the extras most tools skip.
Total days are a clean subtraction between the two midnights you picked. Weeks are simply total days divided by seven. The calendar breakdown, on the other hand, respects the real length of each month, so January and February are not forced to be the same size. Business days skip Saturdays and Sundays, and leap days only count Feb 29 when the range actually crosses one.
No problem. The tool flips the range behind the scenes and labels the result as counting backward, so you can check how long ago something happened without rearranging your inputs.
Use it to time a project sprint, count the days until a trip, work out an age in days, or settle how long a subscription has been running. The share link keeps everyone on the same page with the exact range you chose.
By default the total is the clean gap between the two days, so a start on Monday and end on Tuesday is 1 day. Flip the Include the end date toggle to count both endpoints, which is what you want for hotel nights, rental periods, or inclusive billing windows.
The tool walks forward year by year, then month by month, then counts the leftover days. That keeps months at their actual length, so the breakdown matches how humans think about anniversaries and ages.
Yes. Feb 29 is included whenever the range actually crosses one, and the Leap days card tells you how many of those extra days fell inside your window.
Both work. The calculator accepts any valid dates and clearly labels whether the result is counting forward or counting backward, so there is no ambiguity in the summary you copy.
Business days skip every Saturday and Sunday inside the range and always count both endpoints. That matches how most offices think about working time. Use the main Days figure when you need a plain calendar gap.
Press Share to reveal a link with your dates baked into the URL. Anyone who opens it lands on the same calculation with the same toggle state, which makes it easy to settle a debate or brief a teammate.
