Free Online Boxing Round Timer
A free interval timer for boxing and combat sports that runs in your browser: no download, no account, no ads. Real bell sounds, a warmup countdown, an end-of-round warning and presets for boxing, MMA, Muay Thai, kickboxing, karate and taekwondo. Set it up in seconds and get to work on the heavy bag, shadow boxing or sparring at the gym.
What you get
Real bell sounds
A real boxing bell recording, with normal and loud options for noisy gyms. A double beep warns you before the round ends.
Sport presets
One tap loads the correct round and rest times for pro boxing, MMA, Muay Thai, amateur boxing, kickboxing and more.
Fully custom
Set any combination of round length, rest time, warmup, number of rounds and end-of-round warning. Your settings are saved automatically.
Works on any device
Phone, tablet, laptop, desktop. Nothing to install: open the page and it works. Tap anywhere on the screen to pause.
Free, without ads
No subscription, no premium tier, no ads. Use it as often as you want without paying a cent.
Distraction-free
A clean full-screen display while you train, with a progress ring and round dots so you always know where you are in the workout.
Want more than a timer?
The Shadow Boxing App, on iOS and Android, adds guided workouts, multi-day programs and technique videos on top of a full boxing timer: a coach in your ear instead of just a bell.
The timer inside the app is completely free too, and it works on Apple Watch with haptic feedback between rounds.
Frequently Asked Questions
How long are professional boxing rounds?
Professional boxing rounds are 3 minutes long with 1 minute of rest between rounds. Championship fights go up to 12 rounds, which is why the default preset on this timer is set to exactly that: 12 rounds, 3 minutes, 1 minute rest. Amateur boxing uses 3-minute rounds for men and 2-minute rounds for women.
How long are MMA rounds?
MMA rounds in the UFC and most major promotions are 5 minutes long with 1 minute rest. Non-championship fights are 3 rounds; title fights are 5 rounds. This free MMA timer includes a preset configured to those exact settings.
Is this boxing timer really free?
Yes, completely free. No account, no email, no credit card. The timer runs entirely in your browser with no server calls during your workout. You can even save this page to your phone's home screen for offline use.
How do I use a boxing round timer?
Select your sport preset or customize your rounds, round time, and rest time. Hit Start. The timer will count through your warmup, then alternate between rounds and rest periods with a bell sound at each transition. A warning signal plays near the end of each round so you can finish your combination strong.
Can I use this as a heavy bag timer?
Yes. Set your round time (2 or 3 minutes is standard), add a 30-second or 1-minute rest, and pick the number of rounds you want. The bell keeps you honest so you can stay focused on the bag instead of watching a clock.
What is the best free boxing timer for mobile?
This timer works on iPhone and Android without installing anything, and the full-screen display stays on during your workout. Tap the screen to pause mid-round. If you want more than a timer on mobile, the Shadow Boxing App on iOS and Android adds guided workouts on top of it.
Does it work for Muay Thai?
Yes. The Muay Thai preset sets 5 rounds of 3 minutes with 2 minutes rest, matching standard stadium rules. You can also customize it for gym sparring, clinch work, or conditioning rounds at any length you prefer.
Can I use this timer for shadow boxing?
Shadow boxing is the main thing this timer was built for. Short rounds with tight rest periods keep intensity high. Try 3-minute rounds with 30 seconds rest, or go with 12 quick rounds of 2 minutes to build endurance. The warmup countdown gives you time to get loose before the first bell.
What is the warning bell for?
The warning signal plays a set number of seconds before the end of a round (10, 15, 30 seconds, or more, your choice). In a real boxing gym, the trainer calls "ten seconds" so the fighter knows to finish their combination. This timer does the same automatically.
Loved by boxers all over the world
Great app for boxers...
Lionstrike...who want to train anytime, anyplace! I’m not one to usually review apps but this app is a big help for someone who wants to train while also traveling constantly.
Excellent Digital Coach
puffychipmI live in a rural environment with no access to a boxing gym. This app mixes up the training well and acts as an excellent on-the-go coach.
Great app!
T-jockeyWorks perfectly for me it’s simple and allows me the freedom to modify my training session, definitely recommend!
Great all around app
CBuikeWhether you’re a pro, amateur, or just doing boxing for fitness this app can help depending on what you need. Even if you don’t get the premium model you can still use the free workouts for a good warm up or learn some new techniques. This app really helps me when I’m not at the gym.
Perfect boxing app
KKCBBWas the exact timer app I was looking for. No more stock iPhone timer! You can tell this was made by someone who actually fights. The shadow boxing workouts are great too!
Built by a boxer
hps5314Amazing app! I never reviewed an app before, but this by far is the best for anybody who wants to learn or polish their boxing skills. 11/10, would recommend.