Choose a trampoline that meets ASTM F381, the US safety standard, with an enclosure meeting ASTM F2225, padding over springs and frame, and a weight limit above your heaviest user. The American Academy of Pediatrics discourages home trampoline use; if you have one, allow one jumper at a time, no flips or somersaults without coaching, and constant adult supervision. Place it on level ground with clear space on all sides and anchor it against wind.
Trampolines are a popular backyard addition and a common cause of injuries. Choose and set one up carefully.
Standards to look for
| Standard | Covers |
|---|---|
| ASTM F381 | Backyard trampoline safety |
| ASTM F2225 | Trampoline enclosures |
Look for these on the box or in the manual.
Sizing
| Shape | Common sizes | Notes |
|---|---|---|
| Round | 8 to 15 ft | Bounce pulls jumpers to the center |
| Rectangle | 7 × 10 to 10 × 17 ft | Firmer, more even bounce |
| Oval | Between the two | Fits narrow yards |
| Mini or in-ground | Smaller | Lower fall height |
Placement
- Level ground, away from fences, trees, sheds and pools.
- Clear space on all sides; check the manual for distances.
- Soft ground such as grass or wood chips, not concrete.
- Anchors in windy areas.
Safety rules
The American Academy of Pediatrics discourages home trampoline use. If you have one:
- One jumper at a time.
- No somersaults or flips without trained supervision.
- An adult watching at all times.
- Padding and enclosure in good repair.
- Check springs, frame and net every season.
Spring versus springless
Springless designs use flexible rods under the mat and remove springs from the jump area. Spring models are more common and cheaper.
For other backyard play, see swing sets and playsets and lawn games.
Browse trampolines and play.
Common questions
What size trampoline should I buy?
Size it to your yard first, with clear space around it. Common round sizes run from 8 to 15 feet; larger is not safer if it crowds the yard.
Are trampoline enclosures safe?
Enclosures reduce falls off the trampoline, but most injuries happen on the mat, often when more than one person jumps.
How many people can jump at once?
Safety guidance is one at a time. Most injuries involve multiple jumpers.
Do trampolines need to be anchored?
Yes, in any area with wind. Anchor kits stop trampolines from lifting and blowing over.