Eight free tennis tools covering serve speed, shot analysis, tournament draws, ranking points, tiebreak scenarios, and calorie burn. Covers ATP, WTA, ITF, and LTA competition formats.
Tennis scoring basics
Tennis scoring uses a three-level system: points (15, 30, 40, deuce), games (first to 4 points win by 2), and sets (first to 6 games win by 2, with a tiebreak at 6-6 in most sets). Matches are best of 3 sets (most tournaments) or best of 5 sets (Grand Slam men's singles and doubles). At 6-6 in most sets, a 7-point tiebreak is played; the final set uses either an extended advantage set or a match tiebreak (10 points) depending on the tournament.
All tennis tools
6Serve Speed Calculator
Convert a serve's distance and time into speed, or convert between mph and km/h.
Open toolTennis Tiebreak Calculator
Check whether a tiebreak is won, and who serves next, from the current points.
Open toolTennis Match Win Probability
Estimate your chance of winning a point, game, set and match from your service and return win rates.
Open toolTennis Rating Converter
Compare tennis rating systems — NTRP, ITF and a rough UTR guide — side by side.
Open toolGame & Set Score Calculator
See how tennis game scoring works and what each point score means, from love to deuce.
Open toolTennis Calorie Calculator
Estimate calories burned playing tennis by intensity, bodyweight and time on court.
Open toolFrequently asked questions
What is a let in tennis?
A let is a rally or serve that is replayed without a point being awarded. The most common let is the service let — when a serve clips the net cord and lands in the correct service box. Service lets are replayed without penalty (the server gets the same serve again). Other lets are called when play is interrupted by an external factor (ball rolling onto court, linesperson call disruption). There are no limits on service lets — they are always replayed.
How fast is an average tennis serve?
Men's first serve averages on the ATP Tour run approximately 190–210 km/h (118–130 mph). The fastest serves recorded exceed 263 km/h (163 mph). WTA women's first serve averages run 155–175 km/h (96–109 mph). Recreational players' serves are typically 80–130 km/h depending on technique and fitness. The serve speed calculator estimates velocity from toss height and swing mechanics for coaching analysis.
How does ATP/WTA ranking work?
ATP and WTA rankings are based on points accumulated from results in the previous 52 weeks. Points are awarded on a sliding scale by tournament category and round reached. Grand Slams award the most points (2,000 for the winner); Masters 1000/Premier Mandatory events next (1,000); down to smaller 250-point events. Players must defend points earned in the same tournament the previous year — strong results from the prior year create 'points to defend' pressure.