# Free online circuit timer

> This free circuit timer runs in your browser with no sign-up. Enter your exercises, work time, rest time and rounds, press Start, and it calls out every exercise and rest with sound. Classic settings are 40 seconds of work and 20 seconds of rest for 3 rounds.

Source: https://templatetrainer.com/guides/circuit-timer/ · Updated 2026-10-12 · Template Trainer

[The interactive timer is on the web page: https://templatetrainer.com/guides/circuit-timer/]
This timer is also built into the Template Trainer app. Save your circuits as part of a program, and every round you finish is logged so you can track your progress. Start free

## How to use the circuit timer

1. **Pick a preset** or type your own work, rest and round times.
2. **List your exercises**, one per line. The timer shows each one by name and tells you what's coming next. Leave the list empty to use it as a simple interval timer.
3. **Press Start.** You get a 10-second countdown to get into position.
4. **Follow the sounds.** You hear a cue when each exercise starts, when rest starts, and a three-second countdown before every change.

Your settings are saved in this browser, so the timer is ready next time you open the page. Press the space bar to start and pause on a computer, and use **Full screen** to see it from across the room.

## What makes it a good circuit timer

- **Named exercises.** You see "Push-ups, next: Lunges" instead of "Interval 7 of 15".
- **Rest between rounds.** Set a longer break after the last exercise of each round.
- **Sound cues** for go, rest and the final three seconds, so you never need to look at the screen.
- **Keeps your screen awake** while it runs, on browsers that support it.
- **Stays accurate** if you switch tabs or your phone dims the screen for a moment.
- **Free, with no account and no ads in the way.**

## Good settings to start with

| Workout | Work | Rest | Rounds | Rest between rounds |
| --- | --- | --- | --- | --- |
| Beginner circuit | 30 s | 30 s | 2 to 3 | 60 s |
| Classic circuit | 40 s | 20 s | 3 | 60 s |
| Harder conditioning | 45 s | 15 s | 3 to 4 | 90 s |
| Tabata | 20 s | 10 s | 8 | none |
| EMOM-style (every minute) | 40 s | 20 s | 10 | none |

Need ideas for what to put in it? Our guide on [how to run a circuit workout](https://templatetrainer.com/guides/how-to-do-a-circuit-workout/) has four ready-made circuits you can paste straight in, and the [Tabata timer](https://templatetrainer.com/guides/tabata-timer/) is set up for classic 20/10 intervals.

## Frequently asked questions

### Is this circuit timer really free?

Yes. It runs entirely in your browser, with no sign-up and nothing to install.

### Does the timer work on my phone?

Yes. Open this page on your phone and press Start. Some phones only allow sound after you tap the page, which pressing Start takes care of. Turn your ringer on, or the sound cues may be silent.

### Can I use it offline?

Once the page has loaded, the timer keeps running even if you lose signal.

### Can I save more than one circuit?

This page remembers your most recent settings. To save several circuits as part of a full training program, with every round logged, use the circuit timer inside the Template Trainer app.