Timer+ app icon Timer+

Free online workout timer

Build a HIIT Workout and Run It in Your Browser

Set your work, rest, warmup, cooldown, and round count, then give every work segment its own exercise name. The timer runs immediately in your browser with no account required.

Use it for bodyweight circuits, conditioning, strength intervals, sprint sessions, or any workout where the next exercise needs to be clear.

Runs in your browser Name every exercise No account required

Workout builder

Build your intervals

7:40 total

Interval timing
Exercises

Optionally name each work segment so you always know what comes next.

60 characters maximum

Live timer

Ready

Build your workout

0:00

Add exercise names or start with generic work intervals.

More control in the app

Take your named workouts with you

Timer+ adds voice announcements for exercise names, workout history, live time adjustments, widgets, and Apple Watch support. It is also more reliable when your phone is locked or the browser is in the background.

Download Timer+ Free

Try another interval format

Preset

40/20 HIIT Timer

40 seconds work · 20 seconds rest

Preset

30/30 Interval Timer

30 seconds work · 30 seconds rest

Preset

45/15 HIIT Timer

45 seconds work · 15 seconds rest

Preset

Sprint Interval Timer

20 seconds sprint · 60 seconds recovery

Online HIIT timer FAQ

Can I name each exercise in this HIIT timer?

Yes. Every work segment has an optional exercise field. Enter names such as Pushups, Sit-ups, or Jump Squats and the active exercise will appear during the workout.

Will the timer keep running when my phone is locked?

Browser behavior varies when a screen is locked or the page is put in the background. Timer+ is the better choice for reliable workouts with voice announcements, history, live adjustments, and Apple Watch support.