Judo Timer
A simple online timer for judo training, randori, rounds, intervals, and conditioning workouts.
Set Your Judo Rounds
Choose your round length, your rest period and the number of rounds, then start the timer.
Judo Training Timer
Use this free judo training timer to structure randori, technical drills, conditioning sessions, and interval training. Set your round length, rest period, and number of rounds, then start your session.
Judo Randori Timer
Use the judo randori timer to organize repeated sparring rounds with consistent work and rest intervals. Set your preferred round duration and recovery time to keep your training session structured.
| Session | Round | Rest | Rounds | Load |
|---|---|---|---|---|
| Randori | 3 min | 1 min | 5 | |
| Competition Randori | 4 min | 1 min | 5 | |
| Long Randori | 5 min | 1 min | 4 | |
| Uchi-komi Drills | 2 min | 30 sec | 8 | |
| Conditioning | 1 min | 30 sec | 10 |
These are example randori sessions, not official formats. The first row matches the timer’s default settings. Adjust the round duration and rest period to match your club and your training goal.
Judo Round Timer
Create custom judo rounds for practice, randori, conditioning, or competition-style training. Choose the duration of each round and the rest period between rounds.
Judo Conditioning Timer
Judo conditioning often mixes short, intense efforts with brief recovery periods. Use the timer to run circuits and intervals around the work you already do on the tatami.
Grip training
Time kumi-kata exchanges with a partner and keep every round the same length.
Throws
Structure timed throwing rounds with a fixed recovery period between them.
Footwork
Run short footwork and movement intervals with consistent work and rest.
Uchikomi
Set a short work interval and a short recovery for repetition entries.
Nage-komi
Time full throwing repetitions in rounds instead of counting reps.
Circuits
Chain conditioning stations together with timed intervals and rest.
How to Use the Judo Timer
Set your round duration
Choose how long each judo round should last.
Choose your rest period
Add a recovery period between rounds.
Set the number of rounds
Decide how many rounds your session will run.
Press Start
Launch the timer and follow the audio and visual signals.
Train
Focus on your judo — the timer keeps every round consistent.
Judo Timer Presets
Ready-made work and rest structures for judo sessions. Use a preset to load it straight into the timer.
Randori
4 min work / 1 min rest. Longer sparring rounds with a short recovery between them.
Short Randori
2 min work / 1 min rest. Shorter rounds for higher intensity or for younger judoka.
Technical Drills
1 min work / 30 sec rest. Short technical blocks with a quick reset between them.
Uchikomi
30 sec work / 30 sec rest. Repetition entries with an even work-to-rest ratio.
Conditioning
40 sec work / 20 sec rest. Intense conditioning intervals with a short recovery.
Judo Timer FAQ
IJF contest times, golden score and the formats used by eight other disciplines are in our guide to round lengths in combat sports.
What is a judo timer?
A judo timer is a round timer for judo training. It runs a work interval for randori, uchi-komi or conditioning, then a rest period, and repeats for the number of rounds you set. Because IJF senior contests run four minutes plus golden score, most clubs build their randori rounds around that length.
How long is a judo round?
Senior contests under IJF rules run four minutes of regulation time, followed by golden score with no fixed limit when the score is level. Club randori usually runs four to six minutes with one minute of rest, while uchi-komi and drilling blocks are shorter — one to three minutes of work with about thirty seconds to change roles.
Can I use this timer for randori?
Yes, and matching the contest format is the point. Set four to five minute rounds with one minute of rest and run six to eight of them, rotating partners at every change. If you are preparing to compete, add a round or two beyond contest length so that regulation time starts to feel short.
Can I use the judo timer for uchikomi?
Yes. Uchi-komi suits short, dense intervals: thirty to sixty seconds of continuous entries, fifteen to thirty seconds to swap roles, repeated eight to twelve times. Set those values once and the timer calls every change, so nobody has to count.
Is the judo timer free?
Yes. The judo timer is free, runs in your browser and needs no account or download. Put it in fullscreen on a bench at the edge of the mat and the whole room works from one clock.
Can I create custom judo rounds?
Yes. Work, rest, rounds, sets, preparation time and cool-down are all adjustable, and the values you set stay put for the rest of the session. Round lengths for judo and eight other disciplines are collected in our guide to round lengths in combat sports.
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Ready to Start Your Judo Session?
Set your round time, your rest period and your number of rounds, then start training.
Start Judo Timer