Free Online Focus Timer — Deep Work Without Distractions
What is a focus timer?
A focus timer is a simple tool that creates a time-bound container for deep, uninterrupted work. By committing to a fixed period of focused attention — typically 25 to 50 minutes — you train your brain to ignore distractions, resist the pull of notifications, and enter a state of flow.
Timerbox is a free online focus timer built on the principles of the Pomodoro Technique. It's designed to eliminate every possible reason to leave your work: no ads to close, no login page to get past, no paywalled features. Just open it and start.
Features that make Timerbox the best free focus timer:
Ambient background sounds — Choose from rain, café noise, or brown noise to block environmental distractions and signal to your brain that it's time to focus. No separate app needed.
Task list with session estimates — Add what you're working on, set how many focus sessions you think it'll take, and see your progress in real time. This gives your focus sessions a purpose, not just a timer.
Visual progress tracking — The Stats page shows your daily, weekly, and monthly focus hours so you can see the habit you're building over time.
Accurate in background tabs — Switch to your document, code editor, or research tab without the timer drifting. The countdown is timestamp-based — it stays exact no matter what.
How to start a focus session right now:
Add your task in the task list above
Select it as your current task
Hit Start
Work until the alarm sounds — do not stop early
FAQ
Q: What's the difference between a focus timer and a pomodoro timer?
A pomodoro timer is a specific implementation of a focus timer — it uses 25-minute work intervals and automated break cycles. A focus timer is the broader concept. Timerbox gives you both: the structure of pomodoro and the flexibility to run any custom duration.
Q: How long should a focus session be?
Research suggests attention starts degrading after 40–50 minutes for most people. The classic pomodoro is 25 minutes. For deep work on complex problems, 45–90 minutes may work better. Start with 25 and experiment.
Q: Is Timerbox free forever?
Yes. No hidden premium tier, no "pro features." The entire app is free.
Your next focus session starts now.
Free. No login. No install.