Judo Scoreboard
Run a judo contest from one screen: the contest clock, scores, shido and a hold timer that awards the score for you.
Chart: score progression
Settings
How to use the judo scoreboard
The athlete in white is on the left and the athlete in blue on the right; type their names if you like. Hajime starts the contest clock (4 minutes by default) and Matte stops it, or press Space. Under each athlete, press Ippon, Waza-ari or Shido as the referee gives them, or tap the big number to add a waza-ari. An ippon ends the contest and the board shows the winner in green.
When the referee calls osaekomi, press Osaekomi under the athlete holding. A bar fills while the hold runs and shows what it would score if it ended now. Toketa ends it and adds the score the hold earned. Reach the ippon time and the board awards ippon and stops by itself. A hold that started before the bell carries on after time runs out, as it does on the mat.
Corrections: Undo reverses the last step, and Take back followed by a score or shido button removes one. Open display window shows a clean board on a TV for the athletes and the crowd. For other sports see the fencing scoreboard or the taekwondo scoreboard.
Scores, shido and golden score
Ippon wins the contest at once. With Two waza-ari make ippon ticked (the default), a second waza-ari also ends it. A third shido is hansoku-make, and the opponent wins; the number is a setting in case your event differs. When time runs out, the athlete with the better score wins: ippon first, then the most waza-ari, then yuko if you use it. This board decides at time on scores only. If your rules let penalties decide, press Decide winner.
A level score at time brings the button for golden score. That period has no time limit, the clock counts up, and the first score of any kind wins the contest. The osaekomi times default to 10 seconds for waza-ari and 20 seconds for ippon. Rule sets change from cycle to cycle and youth events often use shorter contests, so the contest length, the hold times and yuko are all settings. Check the version your event uses.
Keyboard shortcuts
- Space: hajime or matte (matte also ends a running hold)
- A or ←: waza-ari for the athlete on the left; L or →: for the athlete on the right
- 1 to 4: left side Ippon, Waza-ari, Shido, Osaekomi; 6 to 9: right side (Yuko joins the row when it is on)
- T: toketa, the hold ends; B then a score key: take one back
- U or Ctrl+Z: undo; S: swap sides; F: full screen; M: mute
Questions
How does the osaekomi timer award scores?
It measures the hold from the moment you press Osaekomi. When you press Toketa it adds waza-ari if the hold reached the waza-ari time, or ippon if it reached the ippon time. An athlete who already has a waza-ari gets the contest the moment the hold reaches the waza-ari time.
Can I turn on yuko?
Yes. Tick Use yuko in Settings to get a Yuko button and a yuko column. The IJF contest rules brought yuko back in 2025, including a yuko for a hold of 5 to 9 seconds, so the yuko hold time defaults to 5 seconds; change it if your event uses other rules.
What happens if the scores are level when time runs out?
The board offers golden score. Press it, then Hajime: the clock counts up with no limit and the first score wins. If you would rather settle it another way, press Decide winner.
Will a refresh lose the contest?
No. The scores, the shido, the clock and even a running hold are stored in your browser with their start times, so a refresh picks up exactly where you were.
More in Combat sports
Put this judo scoreboard on your website
Free for classrooms, clubs, blogs and shops: paste this code into any page. It works the same inside your site, and counts stay in each visitor's own browser. For a dark version, add ?theme=dark after /judo-scoreboard/ in the code.