Intermittent Fasting Timer — Free Online Tool
Track 16:8, 18:6, OMAD, 5:2 — all protocols
Track intermittent fasting (16:8, 18:6, 20:4, OMAD, 5:2). Countdown to next meal window. Live, accurate, browser-based.
📚 Learn more
Free intermittent fasting timer — 5 protocols
Toololis Fasting Timer tracks all major intermittent fasting protocols — 14:10, 16:8, 18:6, 20:4, OMAD. Auto-saves your progress. Works offline. No signup, no ads interrupting your fast.
How to use this tool
- 1
Pick a protocol
16:8 (most popular), 18:6, 20:4, OMAD (One Meal A Day = 23:1), or 5:2 (full days).
- 2
Start your fast
Tap the Start button right after your last meal. Timer begins counting.
- 3
Watch the countdown
See hours remaining, progress bar, and reminder when eating window opens.
Protocol guide
- 14:10 — Easiest entry point. 14h fasting, 10h eating.
- 16:8 — Most popular. Skip breakfast, eat 12pm-8pm.
- 18:6 — Deeper autophagy. Eat 2pm-8pm.
- 20:4 Warrior — Advanced. Eat 4pm-8pm.
- OMAD 23:1 — Experienced fasters only. One big meal per day.
Frequently Asked Questions
What is intermittent fasting?
Which protocol is best?
Can I drink during fasting?
Is my fasting data saved?
Does this work offline?
Key Takeaways
- Intermittent Fasting Timer is a free, browser-based calculator tool — track 16:8, 18:6, omad, 5:2 — all protocols.
- No signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Intermittent Fasting Timer
- Open the tool: Launch Intermittent Fasting Timer on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Intermittent Fasting Timer — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- 100% browser-based — no data is sent to any server
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Calculator Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Intermittent Fasting Timer |
| Category | Calculator |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Intermittent Fasting Timer?
You should try Intermittent Fasting Timer for a quick, private way to track 16:8, 18:6, omad, 5:2 — all protocols. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.