Free badminton tools
Score keepers, tournament generators and calculators for club nights, coaches and curious players. All free, all in your browser, nothing to sign up for.
Score keeper
Badminton score keeper
Free online badminton scoreboard that knows the rules: 21-point scoring to 30 or the new 15-point format, who serves from which court, and change of ends.
Score sheet
Printable badminton score sheet
Free printable badminton score sheets for singles and doubles. Add player names and event details, then print or save as PDF.
Round robin
Badminton round robin generator
Generate a badminton round robin schedule for any number of players or teams, with courts, rounds, rotating partners and a live standings table.
Bracket
Badminton bracket generator
Make a badminton knockout bracket for 3 to 64 players or teams, with seeding and byes, then click winners through to the final and print it.
King of the Court
King of the Court
Run King of the Court at club night: a challenger queue, winners stay on, timed rounds and a live tally of court time and wins. Rules included.
Doubles serving
Who serves next in doubles?
Step through a doubles game rally by rally and see exactly who serves, from which court, and who receives. The doubles service rules, finally clear.
Smash speed
Smash speed calculator
Work out your badminton smash speed from a slow-motion video: distance, frames and frame rate in, km/h and mph out, with an honest error range.
Court size
Badminton court dimensions
Every badminton court measurement in feet, meters, cm and mm: length, width, service lines, net height and area, on an interactive diagram.
String tension
String tension calculator
Find the right badminton string tension for your level, style and racket, in lbs and kg, with a full tension chart from beginner to advanced.
Racket finder
Find your racket
Answer six questions and get the racket weight, balance, shaft flex and grip size that suit your game, plus the 4U vs 5U and G4 vs G5 charts.
Calories
Badminton calories burned
Estimate calories burned playing badminton from your weight, time and intensity, using published MET values. Singles, doubles, casual or competitive.
Shuttle speed
Which shuttlecock speed?
Pick the right feather shuttlecock speed for your hall's temperature and altitude, test it the BWF way, and see the full speed chart.
Quiz
Badminton rules quiz
Twenty real situations on an interactive court. Call in or out, fault or let, and who serves next, then see the rule behind each answer.
Stop guessing. Start seeing.
Badminton Sensei traces every shuttle, clocks your smashes, calls the lines and keeps the score, all on your iPhone.
Coming soon to theApp StoreFree · iPhone with iOS 26 or later- On-device AICore ML tracking, nothing uploaded
- No account, no adsEvery feature, every match, free
- Works with no signalAny gym, any court