40 Hours Timer

Simple and beautiful online timer

2400:00

Set the timer for the specified time

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Timer Features

Everything you need for precise and comfortable time tracking

⚡

Quick Presets

Choose from common timer durations or set your own custom time with just one click

🎯

Precise Timing

Millisecond precision with intuitive pause and resume controls

🔔

Sound Alerts

Choose from various notification sounds to alert you when time's up

🌓

Dark Mode

Easy on the eyes with automatic theme switching based on your system preferences

🖥️

Fullscreen Mode

Distraction-free experience with auto-hiding controls for maximum focus

✨

Beautiful Backgrounds

Select from dynamic background effects to enhance your timing experience

🌍

Multi-language

Fully translated interface available in 7 different languages

📱

Screen Wake

Keeps your device awake during active timing sessions

💾

Smart Settings

Your preferences are automatically saved for future sessions

How to Use 40-Hours Timer

Follow these simple steps to get the most out of your timer

View Step-by-Step Instructions

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Background Effects

Open settings (gear icon) to choose from different animated backgrounds for better focus.

1
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Sound Notifications

Toggle sound notifications using the speaker icon. You'll hear an alert when time's up.

2
⌚

Set Custom Duration

Click directly on the time display to enter your desired duration. Format: MM:SS

3
🎯

Quick Presets

Use the preset buttons below the timer for common durations like 5, 10, or 15 minutes.

4
▶️

Start/Pause Timer

Click the play button to start the timer. You can pause anytime by clicking again.

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🖥️

Fullscreen Mode

Click the expand icon for a distraction-free fullscreen view. Controls auto-hide after 3 seconds.

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Frequently Asked Questions

Get answers about the 40-hours timer

View FAQ

Will the screen stay on for long sessions?

Yes, we've implemented a screen wake feature that keeps your device awake during the entire 40-minute session.

Will I hear an alert when time's up?

Yes, you'll hear a clear alert sound when the timer ends. Make sure your device's volume is turned on and set to an appropriate level.

Does the timer work offline?

Yes! Once loaded, the timer works completely offline. Perfect for distraction-free focus sessions.

Can I customize the timer settings?

Yes! You can customize the alert sound, background theme, and display format. Your preferences will be automatically saved for future sessions.

How accurate is the timer?

Our timer is highly accurate, syncing with your device's system clock. You can even enable millisecond display for precise timing.