Badminton racket specifications primarily describe a racket's weight, balance, stiffness, and performance characteristics; these figures directly influence the feel during play and the playing styles for which the racket is best suited.

The most fundamental specification is weight, usually denoted by "U" ratings (e.g., 3U, 4U, 5U), corresponding to ranges of approximately 85–89g, 80–84g, and 75–79g (excluding strings and grip wrap). Lighter rackets allow for faster swings but may offer slightly less stability, whereas heavier rackets provide greater stability and power upon impact.

Next is the balance point, measured in millimeters (mm), which indicates the location of the racket's center of gravity. A balance point closer to the head (high balance) favors an attacking style with more powerful smashes; a balance point closer to the handle (low balance) offers greater maneuverability, making it suitable for defense and rapid returns; a centered balance point indicates an all-round racket.

Another key specification is shaft stiffness, typically categorized as soft, medium, or stiff (or rated by "flex"). Stiff shafts offer quick repulsion and precise control but require superior technique to generate power; soft shafts make it easier to utilize the racket's flex for power, making them ideal for beginners or defensive players.

Other factors include string tension (measured in lbs), which determines the tension of the strings and affects control and elasticity, as well as racket length (standard is approximately 67.5 cm) and grip size (e.g., G4, G5), all of which influence grip comfort and handling.

These specifications collectively determine how "good" a racket is to use; a higher value in a single metric does not necessarily mean a better racket, so the choice should be based on one's personal playing style.