function updateCountdown() const now = new Date().getTime(); const distance = targetDate.getTime() - now; if (distance < 0) document.getElementById("countdown").innerHTML = "EXPIRED"; clearInterval(timerInterval); return; const days = Math.floor(distance / (1000 * 60 * 60 * 24)); const hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)); const minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60)); const seconds = Math.floor((distance % (1000 * 60)) / 1000); document.getElementById("countdown").innerHTML = `$daysd $hoursh $minutesm $secondss`;

// Start the timer timerInterval = setInterval(updateCountdown, 1000); updateCountdown(); </script> </body> </html> If you don’t want to manage files, include a library via CDN. Example with countdown.js :

Experiment by adding sound notifications, saving state to localStorage, or integrating with a backend API for server-accurate time. This guide is free to use and modify. Last updated: 2025.

For most users, the copy-paste timer provided above will work instantly. For advanced needs, explore the open-source ecosystem – thousands of free timers are just a search away.

function resetTimer() // Reset to 7 days from now targetDate = new Date(); targetDate.setDate(targetDate.getDate() + 7); // Restart interval to avoid duplicates clearInterval(timerInterval); timerInterval = setInterval(updateCountdown, 1000); updateCountdown(); // immediate update

Download a free timer for client work or MVPs. Build your own for learning or production systems requiring lightweight, tailored code. Complete Free Timer Code (Copy-Paste Ready) If you want a timer right now, here’s a complete, standalone HTML document. Save it as timer.html and open in any browser.