Content is loading…
Big-screen HIIT/Tabata timer with beeps & voice cues.
Next: Work
Interval Timer is a free HIIT and Tabata timer with configurable prep, warm-up, work, rest, sets and cool-down phases. It shows a large color-coded countdown with beeps and optional voice cues, keeps your screen awake, and saves custom workouts locally in your browser.
Free online interval timer for HIIT, Tabata, circuit training, stretching and study sprints. Fully configurable prep, warm-up, work, rest, rounds, sets, set breaks and cool-down phases with a huge color-coded display, progress ring, countdown beeps and optional voice coaching. Save your custom workouts in the browser, keep the screen awake while training, and pick from presets like classic Tabata 20/10. Works offline, entirely in your browser.
HIIT & Tabata Interval Timer provides a fully customizable workout and session timer directly in the browser without requiring any software installation or user accounts. It supports complete phase configuration including prep, warm-up, work, rest, sets, and cool-downs, complemented by a large color-coded display, countdown beeps, and optional voice coaching. Workouts are saved locally to the browser for quick access, and the tool functions offline while preventing the device screen from sleeping during active sessions.
Good to know: Custom workouts are saved locally within the browser, meaning they will not sync across different devices or browsers automatically.
Learn how to configure and run custom interval workouts, HIIT sessions, and Tabata timers using the online interval timer.
Select a preset or start fresh
Choose from built-in presets like classic Tabata 20/10 or start a custom workout from scratch.
Configure your training phases
Customize your prep, warm-up, work, rest, rounds, sets, set breaks, and cool-down phases to match your exact routine.
Enable audio and display settings
Turn on countdown beeps, voice coaching, and the screen-awake feature so your device stays active while training.
Save your custom workouts
Store your favorite custom routines directly in your browser for quick access during future training sessions.
Start the interval timer
Press start to follow the large color-coded display and progress ring through your workout phases.
Estimated time: PT2M
Share this tool
Pomodoro timer with task list and session history.
Stopwatch with laps + multiple parallel countdown timers.
A guided breathing animation (box, 4-7-8, coherent) to relax and focus.
AI-generated personalized weekly workout plan with BMR/TDEE calculations and PDF download.
Create professional invoices and print or save as PDF for free.
Chat with an AI model that runs privately in your browser — fully offline after download.
Buy social media marketing services — followers, likes, views and more.
Shorten long URLs into compact, trackable short links.
Share any text or code via a secure, shareable link.
Build your personal link-in-bio page with themes and click analytics.
Convert text or Markdown to a Word .docx file with live preview, RTL, and page-setup options.
Draw a Secret Santa with exclusions and share a private reveal link for each person.
Make custom bingo cards from your own words — play, print, or share a link.
Convert images to video with the Ken Burns zoom/pan effect. Add music and export as WebM.
Load and compare multiple URLs side by side in resizable iframes.
Rank anything with quick 1-v-1 matchups → a full ordered list you can share.
Convert Markdown to a fully customized, RTL-ready PDF.
See your public IP address plus full location, ISP, ASN, timezone, coordinates, and more.
