Date Countdown Calculator

Count down to any future date, or calculate the exact duration between two dates. Business days, weeks, months, and years included.

Select start and end dates above.

How to calculate the duration between two dates

Pick a start date and an end date (tap "Today" to instantly fill in today's date). The calculator shows the total number of days, weeks, months and years between the two dates. Toggle "Include end date" to count both the start and end day, and enable "Business days only" to exclude weekends.

How many business days between two dates?

Enable the "Business days only" toggle above. The calculator will count only Monday through Friday, skipping Saturdays and Sundays, giving you the exact number of working days between your two dates. Useful for project deadlines, contract durations, and HR calculations.

Save your countdown on your phone

Download Reach for free and add beautiful countdown widgets to your home screen and lock screen.

Download on iOSDownload on Android

Popular countdowns

Days until ChristmasDays until New YearDays until HalloweenDays until SummerDays until Valentine's DayDays until Thanksgiving

Frequently asked questions

How do I calculate how many days until a date?
Use the "Countdown" tab above: pick your target date and the tool immediately shows the exact number of days, hours, minutes and seconds remaining. It updates live every second.
How do I calculate the number of days between two dates?
Use the "Date Duration" tab: select a start date and an end date. The calculator instantly shows total days, total weeks, and a full breakdown in years, months and days.
How do I count only business days between two dates?
In the "Date Duration" tab, enable the "Business days only" toggle. The result will exclude Saturdays and Sundays and show only working days (Monday–Friday).
What does "include end date" mean?
By default, the calculator counts from the start date up to (but not including) the end date. Enabling "Include end date" adds one extra day, so both the start and the end day are counted. Useful when you want to include the last day of a period.
Is this date calculator free?
Completely free, no sign-up required. Use it as many times as you like directly in your browser.
Can I save my countdown and add it to my phone?
Yes! Download Reach (free on iOS and Android) to save any countdown, add a beautiful widget to your home screen, and share it with friends.
How accurate is the countdown?
The live countdown counts down to midnight (00:00:00) on the date you select, in your local time zone. It updates every second. The date duration calculator works on calendar days from midnight to midnight.