4h Timer - 4 Hour Countdown
Free online 4 hour (4h) countdown timer with alarm
Start a 4h timer for long focus sessions, study blocks, cooking, exams, or a half-day work countdown. Runs in the browser with alarm sound and optional notifications.
Space start/pause · R reset · ↑↓ adjust
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About the 4 Hour Timer
Free 4 hour timer with alarm, also written as a 4h timer or timer 4h. Start a four-hour countdown for study blocks, work sessions, cooking, or long breaks in your browser.
Common Uses
- Four-hour study block
- Long focus session
- Project deadline countdown
- Slow cooking reminder
- Half-day work timer
How to Use
- Click Start to begin your 4 hour countdown
- Use the +/- buttons to adjust by 5 minutes while running
- Press Space to start/pause, R to reset your timer
- Enable notifications for alerts when your 4 hour timer finishes
Frequently Asked Questions
How long is 4 hours in minutes?▾
4 hours is exactly 240 minutes or 14,400 seconds. Our free 4-hour countdown timer tracks every second and sounds an alarm when done.
What is a 4 hour timer used for?▾
A 4 hour timer is commonly used for four-hour study block, long focus session, project deadline countdown. Set the countdown and focus on your task with confidence.
Does the timer work in the background?▾
Yes, our timer continues running even if you switch to another tab or minimize your browser. Enable push notifications to get alerted when your countdown finishes.
Will the alarm sound after 4 hours?▾
Yes, an alarm sound plays automatically when the 4-hour countdown reaches zero. You can also enable push notifications for an extra alert, even if you’re in another tab.