Learn how to serve in badminton legally and consistently: the underhand technique, the 1.15 m height rule, where to stand by score, and when to use a low serve versus a high serve. The serve is the only shot you fully control and the easiest place for a beginner to leak points — this breaks down a legal serve step by step, the faults service judges actually call, and the low doubles serve that takes the attack away from your opponent.
Badminton service rules require an underarm strike with the whole shuttle below 1.15 m, both feet stationary and off the lines, served diagonally into the correct court. This guide walks through every condition — contact height, racket angle, footwork, and court selection — so you can serve legally every time and spot a service fault the moment it happens.