Tennis Court
Courts & Fields · 9 specs
Direct Answer
Official tennis courts are standardized by the International Tennis Federation (ITF Rule 1). The rectangular court measures 78.0 ft (23.77 m) in length. Singles courts are 27.0 ft (8.23 m) wide; doubles courts are 36.0 ft (10.97 m) wide (doubles alleys 4.5 ft / 1.37 m). The net is suspended at 3.5 ft (1.07 m) at the posts and pulled taut to exactly 3.0 ft (0.914 m / 36 in) at the center strap.
Source: ITF (International Tennis Federation) Rules of Tennis Rule 1: The Court · Last reviewed Aug 28, 2026
Specs
| Court Length (Overall) | 23.77 m (78.0 ft baseline to baseline) |
| Singles Width | 8.23 m (27.0 ft) |
| Doubles Width | 10.97 m (36.0 ft with 4.5 ft alleys) |
| Net Height at Center Strap | 0.914 m (3.0 ft / 36.0 in strictly maintained) |
| Net Height at Posts | 1.07 m (3.5 ft / 42.0 in at post centers) |
| Service Box Length | 6.40 m (21.0 ft from net to service line) |
| Service Box Width | 4.115 m (13.5 ft per half court) |
| Baseline Line Width | Up to 10.0 cm (4.0 in max; other lines 2.5–5.0 cm) |
| Minimum Overall Stadium Footprint | 36.57 × 18.29 m (120 × 60 ft including runoffs) |
Net Cable Tension & Surface Classifications
- Center Strap Regulation: The net is suspended from a galvanized steel cable (max 0.8 cm diameter) and anchored at mid-court by a 5 cm wide white center strap adjusted to precisely 36.0 inches (0.914 m) above court level.
- ITF Surface Pace Ratings (CPR): ITF categorizes surfaces into 5 speed tiers: Category 1 Slow (Red Clay), Category 2 Medium-Slow, Category 3 Medium (Standard Hard Court), Category 4 Medium-Fast, and Category 5 Fast (Grass Courts like Wimbledon).