How do I count the days between two dates?

Pick both dates in the Days between dates mode. The difference is the end date minus the start date in calendar days — for example, January 1 to January 31 is 30 days apart. The order doesn't matter; the calculator sorts the dates automatically.

Is anything I type sent to a server?

No. All calculations run entirely in your browser, and nothing you type is ever sent to or stored on a server.

Date Calculator

Q: What is 90 days from today?

90 days from today is today's date plus 90 calendar days, counting every day including weekends and holidays. Use the +90 days preset in the Add days mode above and you'll see the exact date and weekday instantly. The same works for 30, 45, and 60 days.

Q: Does the count include both the start and end dates?

The main result is the gap between the two dates, which counts neither-or-one endpoint the way most people expect (Jan 1 to Jan 2 = 1 day). If you need both endpoints counted — common for rentals, prescriptions, or streaks — use the inclusive count shown below it, which is always the difference plus 1.

How to use

Days between dates: pick any two dates and you get the difference in days, the same span expressed in years, months, and days, and an inclusive count that includes both endpoints. The order doesn't matter — swap the dates and the result is the same. Countdown to a date: pick one target date and you'll see how many days are left (or how many days ago it was) measured from today. Add days to a date: pick a start date, type how many days to add — or tap a preset to jump straight to 30, 45, 60, or 90 days from today. Negative numbers go backward, so -14 gives you the date two weeks before. Deadlines, probation periods, visa windows, medication refills, return policies — anything phrased as "n days from" is what this mode is for.

The rules behind the numbers

Difference = second date − first date, in calendar days at midnight. Every day counts — weekends and holidays included.
Inclusive count = difference + 1. Use it when both the first and last day count, like a 3-day rental that starts Friday and ends Sunday.
Countdown: the target day itself shows as "today"; one day out is "1 day left"; one day past is "1 day ago".
Years, months, days: calendar-based, the same way ages are computed — whole years first, then whole months, then leftover days. Because months have 28 to 31 days, a months-based figure can shift by a day depending on the anchor; this calculator anchors on the start date.

Examples

From July 22, 2026, adding 90 days lands on Tuesday, October 20, 2026 — that's what "90 days from today" means on that day: 9 remaining days of July, then 31 in August, 30 in September, and 20 days into October. Between January 1 and April 10 of the same year there are 99 days, or 100 with the inclusive count. And if today is July 22, 2026 and your deadline is November 19, 2026, the countdown shows 120 days left.

Frequently asked questions

What is 90 days from today?

Counting 90 calendar days forward from today, you land on …. That includes weekends and holidays — a "90 days" window in contracts, returns, or visa rules is almost always a straight calendar count like this. Tap the +90 days preset above to see it with today's date filled in.

What is 60 days from today?

60 calendar days from today is …. This is a common window for payment terms (net-60) and rebate deadlines.

What is 45 days from today?

45 calendar days from today is … — a window that shows up in escrow timelines and some tax deadlines.

What is 30 days from today?

30 calendar days from today is …. Note that "30 days" and "one month" aren't always the same thing: adding one month to January 31 gives February 28 (or 29), but adding 30 days gives March 2 (or 1). When a rule says days, count days.

Does the count include both the start and end dates?

The main difference result counts the gap only: January 1 to January 2 is 1 day apart. When both endpoints matter — rentals, prescriptions, attendance streaks — use the inclusive count, which is always the difference plus 1. Same two dates, two honest answers to two different questions.

Do weekends and holidays count?

Yes. Everything on this page counts calendar days, so weekends and holidays are included. Business-day counting (which skips them) is a different calculation — most "n days" rules in everyday life mean calendar days unless they explicitly say business days.