Find the exact time between two dates — down to years, months, days, and weekdays — or add and subtract days, weeks, months, and years from any date.
Figuring out dates by counting on your fingers (or a paper calendar) is slow and error-prone — especially across month and year boundaries, leap years, and weekends. This date calculator does it instantly. Use it to count how many days are between two dates, how long until a deadline or event, how old something is, or what the date will be a certain number of days, weeks, months, or years from now.
It runs entirely in your browser, so it's fast and private, and it handles leap years and varying month lengths correctly.
Pick the start and end dates and the calculator shows the gap in years, months, weeks, and days, plus the total day count. Leap years and month lengths are handled correctly.
The business-days count skips weekends automatically, which is what contract deadlines, shipping estimates, and HR policies usually mean when they say days.
Use the add/subtract mode: start from today, add 90 days, and read the exact date. It works with any span of days, weeks, months, or years, forward or backward.
Set today as the start and the big day as the end, and the countdown appears in every unit. Repeat visits make excellent motivation.
Yes. All the math respects leap years and true month lengths, which is exactly where by-hand date arithmetic quietly goes wrong.