Use this free online countdown calculator to see exactly how many days, hours, minutes, and seconds are left until any future date and time — perfect for birthdays, events, deadlines, or launches.
How to Use the Countdown Calculator
Optionally name your event in "Event Name".
Pick the "Target Date" and "Target Time" you are counting down to.
Click "Start Countdown" to see the live days, hours, minutes, and seconds remaining.
Frequently Asked Questions
Yes. Once started, the countdown refreshes every second automatically for as long as you keep this page open — no need to click again.
The calculator shows a message that the moment has already passed, along with how much time has elapsed since it happened.
No. Once started, your countdown is saved on this device (in your browser), so refreshing this page, closing the tab, or coming back later keeps it running toward the same target. Click "Clear" to remove it and start a new one.
Yes, it's completely free and requires no sign-up.