Boxing timer: round countdowns on the gym screen

A boxing gym runs on the bell. Three minutes on, one minute off, everyone moves together — bag work, pads, sparring, conditioning, all to the same clock. When the clock is a coach glancing at a stopwatch, rounds drift. When it's a dedicated gym timer bolted to the wall, it costs a couple hundred dollars and does exactly one thing.

There's a third option: the TV you already have on the wall, showing a countdown everyone can read from across the gym, with the bell controlled from the coach's phone.

Round 4 on the wall. Nobody asks "how long left in the round?"

The wall TV becomes the round clock

KeepTheScore's online timer runs in any browser, so any screen that can open a web page becomes the gym clock — the wall TV, a tablet zip-tied to the ring post, a phone propped on the apron. Set the duration, hit full-screen, done.

The part a dedicated wall timer can't do: every screen showing the link stays in sync, live, to the second. The coach carries the controls in their pocket. Start the round from the middle of the floor, pause it when something needs fixing, restart it without walking to the wall. With a second screen at the far end by the bags, both displays show the identical clock — server-synced, not "roughly the same".

At zero you get a buzzer — the bell — plus an end message in your own words: "REST", "SWITCH PARTNERS", "WATER". Make the work round white-on-black and the digits readable from the parking lot; there are four text sizes, custom colors and fonts, and nine display formats, so 3:00 looks like a fight clock and not a spreadsheet.

Running rounds with it (the honest version)

One thing to know upfront: there's no automatic round/rest cycling yet — the timer runs one countdown at a time, and a dedicated work/rest interval mode is on the roadmap. In a coached session this matters less than you'd think, because the coach is the one calling the changes anyway. Two ways to run it:

1. One timer, retriggered. Set 3:00. Buzzer sounds, you call "rest", tap restart at the end of the minute. Your phone is the bell rope.
2. Two timers, two tabs. A "ROUND — 3:00" timer and a "REST — 1:00" timer, each a bookmarked link. Swap between them on the TV browser; each starts from your phone.

If you need a fully unattended timer that cycles 12 rounds with no human at the controls — empty-gym circuits running on a loop — a dedicated interval app on a single screen does that better today. The synced timer wins everywhere a coach is present, a class is moving together, or the clock needs to be on multiple screens.

One link. The wall TV, the ring-post tablet, and the coach's phone all show this — at the same second.

Round formats worth programming

• Pro format — 3:00 work / 1:00 rest, the standard for professional boxing and most adult classes.
• Amateur format — 3×3:00 for elite men, 2:00 rounds for many junior and novice divisions; check your federation's rulebook before fight camp.
• Beginner classes — 2:00 / 1:00 keeps technique from collapsing in round three.
• Sparring — shorter rest (0:30) to simulate championship pace, with the clock visible ringside so corners can work to it.
• Conditioning tests — flip to count-up mode and time the 3-round shadowboxing benchmark or a max-effort row.

MMA gyms: same tool, 5:00 rounds. Muay Thai: 3:00 with 2:00 rest. The timer doesn't care — it's just a duration and a buzzer.

Beyond the bell

The same screen that runs your rounds can run your gym's competitive layer — fight-night scoring, conditioning leaderboards, a gym scoreboard setup that doesn't cost LED-board money. And if your gym runs circuit or HIIT classes between boxing sessions, the gym interval timer guide covers station rotations on the same wall TV.

The timer is free — the coach needs an account to create and control it; every other screen just opens the link.