CrossFit Timer App
The clock fills your screen and keeps it awake. On a computer, press the space bar to finish each interval or count a round.
Workout summary
| # | Work | Rest | Clock |
|---|
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End workout?
Are you sure? The clock will stop and you’ll see your summary.
How to use the CrossFit interval timer
Pick a tab, set up your workout and press Start workout. After a 10-second countdown, the timer fills your screen with a big digital clock that counts up for the whole workout, in whole seconds so it's easy to read from across the gym.
- Common Formats (opens by default): AMRAP, Rounds and EMOM, with one big clock.
- Custom Intervals: work intervals where the timer handles your rest, including 1:1 work-to-rest.
When the workout ends, you get a summary sized to fit in a single phone screenshot. Refreshing the page clears everything and starts you over.
Common Formats: AMRAP, Rounds and EMOM
Every common format shows one large white clock counting up from zero. In the last 3 seconds of each minute or round, you'll hear a 3-2-1 beep and the screen flashes red, so you know the next one is about to start without watching the clock.
- AMRAP (as many rounds as possible): enter a duration and the clock stops when time is up. Tap Round done (or press the space bar) after each round to count your rounds. Your summary shows total rounds, your average, fastest and slowest round, and any partial round at the end.
- Rounds: enter the number of rounds and how long each one lasts. Turn on Rest between rounds to add a set rest. Each round and rest starts automatically, with orange for work and green for rest, and the round number shows at the top.
- EMOM (every minute on the minute): enter the number of minutes. Turn on Count my rounds and enter how many movements you're rotating through. A 15-minute EMOM with 3 movements shows 5 rounds, with the round at the top of the screen and the current movement and minute under the clock.
Custom Intervals
Use Custom Intervals for work-based pieces, like "row 500m, rest 1:1." Tap Finish interval (or press the space bar) each time you complete a piece of work. The main clock counts up the whole workout, and a second clock shows your current interval or rest.
Workout length
- Infinite: the clock runs until you press Stop. Good for open-ended pieces like "row 500m repeats until your pace drops."
- Intervals: choose how many intervals, and the workout ends when you finish the last one.
- Duration: choose a time cap in minutes. The workout ends when the main clock hits the cap, even mid-interval.
Rest
| Rest | How it works | Use it for |
|---|---|---|
| Open | Rest counts up until you tap to start the next interval. | "Rest as needed" sets, heavy intervals, skill work |
| Set time | The same rest after every interval, then the next one starts automatically with a beep. | Fixed-rest repeats, like 5 × 3 minutes work with 1:00 rest |
| 1:1 | When you finish an interval, you see how long it took and rest that exact amount before the next one starts. | Work-to-rest ratio training, like 400m runs at 1:1 |
Your summary lists every interval's work and rest time, with your fastest and slowest intervals highlighted.
Why 1:1 work-to-rest?
Matching rest to work keeps the total workload honest. A faster interval earns a shorter rest, so you can't bank recovery by slowing down. It's a common setup for threshold and interval running, rowing and bike work, and it pairs well with the Pace Percentage Calculator for setting your target paces.
Tips
- Screen stays on: the timer asks your phone to keep the screen awake while the workout runs.
- Go sideways: turn your phone sideways for an even bigger clock.
- Sound: you'll hear a 3-2-1 countdown before each interval, round or minute starts. Tap Sound to mute.
- Pause: tap the green Pause button to freeze the clock, then Resume to pick up where you left off. Paused time doesn't count toward your workout.
- Full screen: on a computer or tablet, use the Full screen button for a gym-wall clock.
- Stop: the Stop button in the corner asks you to confirm, so a stray tap won't end your workout.
Want your conditioning programmed for you? ZOAR Fitness coaches write individualized training for CrossFit athletes, from first-time Open athletes to competitors.
Train with ZOARFrequently asked questions
Can I use it as an EMOM or AMRAP timer?
Yes. The Common Formats tab, which opens by default, runs EMOMs, AMRAPs and fixed rounds with optional rest.
How do I count my rounds in an AMRAP?
Tap Round done (or press the space bar on a computer) each time you finish a round. Your summary shows how many rounds you completed and how long each one took.
What does the red flash mean?
The screen flashes red with a beep in the last 3 seconds of each minute or round, so you know the next one is about to start.
Does the timer work on my phone?
Yes. It runs in any modern phone, tablet or computer browser, with no app to install.
What happens if I refresh the page?
Refreshing clears the workout and takes you back to setup. Nothing is saved, so screenshot your summary before you leave the page.
Can I end rest early?
Yes. In Custom Intervals with Set time or 1:1 rest, tap Start now to begin the next interval before the rest countdown ends.
Built by ZOAR Fitness. More free tools for athletes and coaches at zoarfitness.com/tools.