Countdown Calculator
Enter a target date to see exactly how long remains (or has elapsed) in days, hours, minutes, and seconds.
The countdown uses your device time zone.
Countdown to Launch Day
9
Days
21
Hours
9
Minutes
58
Seconds
Weeks remaining: 1.41 • Hours total: 237.2 • Minutes total: 14230
How to Use This Calculator
Set the milestone
Choose the exact date and time for your event or deadline.
Copy the breakdown
Use the day/hour/minute summary to update teams or share online.
Revisit anytime
Refresh this page to see the countdown updated in real time.
Formula
Difference (ms) = Target − Current
Days = floor(|Difference| ÷ 86,400,000)
Hours/Minutes/Seconds from remaining milliseconds
Example: Target in 10 days 5 hours → 10 days, 5 hours, 0 minutes.
Countdown Ideas
- Track product launch or marketing campaign kickoff.
- Countdown to weddings, vacations, graduations, or retirements.
- Monitor time remaining for compliance deadlines or audits.
- Create urgency for limited-time offers or fundraising goals.
Frequently Asked Questions
Does the countdown update live?
The timer updates when you refresh the page. For live dashboards, embed this logic into your own app.
How can I share the countdown?
Screenshot the summary or write down the values to share in newsletters, Slack, or social posts.
Can I count up from a past date?
Yes—if the target date is in the past, the tool shows how much time has elapsed since then.
What about time zones?
All calculations use your device’s local time zone. Convert target dates before entry if coordinating across regions.