Tool 02 · Boxing / Muay Thai / BJJ

Round
timer.

Three minutes of work, one minute of rest — or five-minute grappling rounds, or ten one-minute conditioning intervals. Pick a preset, start, and let the bell mark the work.

Works offlineSound onNo sign-up

Round timer

11:10 total · 3 rounds

GET READYRound 1 / 3

00:10

Round 1 starts nextBell on phase change

Work seconds

Rest seconds

Rounds

Changing a number switches the timer to Custom. Space bar starts and pauses.

Presets

Start where you are.

Boxing is three three-minute rounds. Muay Thai is five. Jiu-Jitsu uses five-minute rounds. Conditioning is ten one-minute intervals. Custom lets you set the work, rest and round count.

The bell

Hear the phase change.

A short WebAudio bell marks the start of work, rest and the end of the session. The screen wake lock is requested when your browser supports it, so the timer stays visible on the wall.

Keyboard

Space to start.

Space bar starts and pauses. Tab reaches every control. Use the skip button when you want to move to the next phase early.

Use it here

Rounds at home are useful. Rounds on the bag with a coach watching your guard are better. Odyssey runs boxing, Muay Thai and Jiu-Jitsu inside a 300+ class month.

Boxing Muay Thai Jiu-Jitsu Ask about the schedule

Clock in

Run the rounds with a coach.

Try a free class. Pick boxing, Muay Thai or Jiu-Jitsu, and let the coach handle the clock for the first one.

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Roundtimer.