Trampoline Size and Yard Space Planner

The most common trampoline buying mistake is choosing the size from the box rather than the yard. A trampoline needs clear space on every side for jumpers who come off the edge, and enclosure poles lean outward under load. This tool works out what actually fits.

Why five feet of clearance

Falls off the trampoline are a minority of injuries, but when they happen the landing surface decides how bad it gets. Five feet of soft, clear ground on every side gives a jumper who comes over the edge somewhere survivable to land. It also keeps enclosure poles, which flex outward under impact, away from anything solid.

Overhead is the one people forget until a branch takes a net out. Twenty four feet of clearance from the ground sounds like a lot, and it is roughly the height of a two storey house, but a teenager on a 15 foot trampoline gets genuinely high.

What each size is for

Our sizes guide covers mat area, weight limits, and age suitability for every common size, and the round vs rectangle comparison covers the shape decision, including the parts availability difference that matters years later.