booster seat victoria height

Looking for the booster seat height rule in Victoria? Here’s the twist: the law isn’t height-based, it’s age-based—kids aged 4–7 years must use an approved booster or forward‑facing restraint, and from 7+ they can use an adult belt only if it fits properly.

Height still matters for safety: VicRoads recommends staying in a booster until about 145 cm and until they pass the “5‑step test”. That means they can sit back against the seat, knees bend at the edge, the lap belt sits low on the hips, the sash crosses the middle of the shoulder, and they can maintain that position the whole trip.

So yes, aim for 145 cm and the 5 steps; but legally, it’s the birthdays that call the shots. When in doubt, keep the booster—your future self (and their sternum) will thank you.