Day Calculator: Quickly Count Days Between Dates

Related Tools: Hours Calculator | Business Day Calculator | Date Calculator

How to Use the Day Calculator (and Why It’s Fun!)

Using the Day Calculator is easy: just select your start and end dates using the dropdown menus or calendar picker. Click “Calculate,” and you’ll instantly see how many days fall between them. You’re not limited to today—choose any dates you like. Whether you're counting down to a vacation or checking how long it’s been since you planted your tomatoes, this tool’s got you covered.

The output will tell you the total number of days, which is perfect for planning timelines, tracking progress, or just satisfying your curiosity. Want to know how long you’ve been best friends? How many days it took to write your novel? Or how many days passed between two historical events? You’ll get your answer in seconds.

It’s ideal for trivia buffs, gardeners, event planners, and anyone who enjoys a little time-based curiosity. Whether you're scheduling a countdown, reminiscing, or calculating a waiting period (looking at you, passport renewal), this calculator makes it simple—and even fun!

Ready to give it a spin? Pick your dates and see for yourself.

RELATED: Age Calculator: Find the Age Between Any Two Dates

Reasons to Use The Old Farmer’s Almanac Day Calculator and Counter

• Count the number of days until a deadline or project due date
• Track the length of a vacation, trip, or leave of absence
• Calculate how many days until an anniversary, birthday, or wedding
• Count the days left in a school term or semester
• Find out how many days it took your tomatoes to ripen
• See how many days you’ve been in a relationship (down to the day!)
• Track how long it’s been since your last haircut or oil change
• Count the number of days between two historical events
• Calculate how many sleeps until your next big trip or concert
• Figure out exactly how out your pup is—day by day