How do I calculate the days between two dates?

Pick a start and end date in the calculator and it shows the exact number of calendar days between them, along with the equivalent weeks and approximate months. The count includes every day — weekends too — and doesn't count the start date itself.

Can I add or subtract days from a date?

Yes — use the second tool on this page. Pick a date, enter a number of days, choose add or subtract, and it shows the resulting date and day of the week instantly.

How do I track a date once I've calculated it?

Add it to Kounts, a free countdown app for iPhone, iPad, Mac and Apple Watch. Future dates count down on a card and Home Screen widget; past dates can count up as Milestones — days since, streaks and anniversaries.

Date Calculator: Days Between Dates & Days From a Date

Days between two dates

Start date End date

Add or subtract days from a date

Start date Days

Counting from today? The days from today calculator has the common counts, 7 to 365 days, both ways.

Calculated it? Now count down to it

Add the date to Kounts and get a live countdown card, Home and Lock Screen widgets, and an Apple Watch complication. Past dates count up as Milestones. Free, no ads.