Date & Time

Countdown Timer — Free Online 2026

Set a countdown in hours, minutes, and seconds. Start, pause, and reset with one click. Audio alert when time is up.

Hours Enter 0-99.

Minutes Enter 0-59.

Seconds Enter 0-59.

00:25:00

Time Remaining

How It Works

Set the duration
Start the timer
Pause or reset

Why Use an Online Countdown Timer?

Whether you are studying for an exam, timing a workout, managing cooking in the kitchen, or running a meeting with a strict agenda, a countdown timer keeps you honest about the time you have left. Unlike a clock, which passively displays the current time, a countdown timer creates urgency — a ticking boundary that helps you focus and finish within your allotted window.

The Pomodoro Technique and Focused Work

One of the most popular uses for a countdown timer is the Pomodoro Technique, a time-management method developed by Francesco Cirillo in the late 1980s. The idea is simple: set a timer for 25 minutes of focused work, then take a 5-minute break. After four cycles, take a longer 15-to-30-minute break. Research suggests that working in short, timed bursts reduces mental fatigue and improves concentration. Our timer defaults to 25 minutes for exactly this reason — hit Start and begin your first Pomodoro right away. For a dedicated Pomodoro experience with automatic break intervals, try our Pomodoro Timer.

Timers in Fitness and Cooking

Countdown timers are indispensable in the gym for rest periods between sets (typically 60-90 seconds for hypertrophy training) and for interval workouts like HIIT or Tabata, where you alternate between high-intensity effort and rest. In the kitchen, precise timing can mean the difference between perfectly al dente pasta and an overcooked mess. Set 8 minutes for spaghetti, 12 minutes for a soft-boiled egg, or 20 minutes for a quick bread proof. If you need to track multiple durations simultaneously, consider using our online stopwatch alongside this timer.

How This Timer Works

This countdown timer runs entirely in your browser. When you click Start, a JavaScript setInterval function fires every second, decrementing the remaining time. The display updates in real time with hours, minutes, and seconds. When the timer reaches zero, a short beep plays using the Web Audio API — no plugins or downloads required. Your inputs are preserved if you pause, so you can resume exactly where you left off. Resetting restores the original duration you entered.

Frequently Asked Questions

How do I use the countdown timer?

Enter the number of hours, minutes, and seconds you want to count down from, then click Start. The timer displays the remaining time in HH:MM:SS format and plays an alert sound when it reaches zero. You can pause and resume at any time, or reset to start over.

Does the countdown timer work offline?

Yes. The countdown timer runs entirely in your browser using JavaScript. No internet connection is required after the page loads. It uses setInterval for accurate timing and does not make any server calls.

Can I set a timer for more than 60 minutes?

Absolutely. Enter any number of hours (up to 99), minutes (0-59), and seconds (0-59). For example, to set a 2-hour timer, enter 2 in the Hours field and leave Minutes and Seconds at 0. The timer will count down from 02:00:00.

What happens when the countdown reaches zero?

When the timer reaches 00:00:00, it stops automatically and plays a short beep sound using the Web Audio API. The display flashes briefly to get your attention. You can then reset the timer to start a new countdown.