Trampoline Size Calculator
Enter your yard space, how many kids will use it and their ages to find the right trampoline size, with the safe clear space it needs.
What size trampoline should I get?
For most families, a 12 ft trampoline is the sweet spot for kids aged 6 to 10. Older kids and teens are happier on a 14 to 15 ft trampoline, and toddlers only need 8 ft or less. Leave about 8 ft of clear space on every side, so a 12 ft trampoline needs an open area of about 28 × 28 ft.
How to use the trampoline size calculator
Measure the open, flat part of your yard, not including fences, trees, sheds or patios.
Tell us how many kids will use it and the age of the oldest.
Round is safer and cheaper. Rectangles fit long, narrow yards and give a better bounce.
Get the best size that fits, plus the space it needs.
Trampoline size chart
| Trampoline | Best for | Yard space needed (8 ft clearance) |
|---|---|---|
| 8 ft round | Toddlers and kids under 6 | 24 × 24 ft |
| 10 ft round | One young child | 26 × 26 ft |
| 12 ft round | Kids 6 to 10 | 28 × 28 ft |
| 14 ft round | Kids 10 to 14, bigger families | 30 × 30 ft |
| 15 ft round | Teens and adults | 31 × 31 ft |
| 16 ft round | Teens, adults, big yards | 32 × 32 ft |
| 8 × 14 ft rectangle | Narrow yards, older kids | 24 × 30 ft |
| 10 × 17 ft rectangle | Gymnastics practice, teens | 26 × 33 ft |
How much space do you need around a trampoline?
Plan for about 8 feet of clear space on every side, and never less than about 6.5 feet. Keep that area free of fences, walls, trees, play sets, sheds, pools and hard patios. Overhead, you need about 24 feet of clear space, with no branches or power lines. Place the trampoline on flat grass or soft ground, not on concrete.
Round vs rectangle trampolines
- Round: cheaper, safer for kids because the bounce pulls jumpers back to the center, and the most common shape.
- Rectangle: a stronger, more even bounce that gymnasts and older kids like. It fits long, narrow yards but costs more.
Weight limits by size
Most 8 to 10 ft trampolines hold about 150 to 250 lb, 12 ft about 250 to 330 lb, and 14 to 16 ft about 330 to 450 lb. The limit is for one jumper, not the whole group. Always check the limit in the listing, and buy a size that fits the heaviest person who will use it.
Trampoline safety basics
- The American Academy of Pediatrics advises one jumper at a time. Most injuries happen when several kids jump together.
- Use a safety net enclosure and padding over the springs and frame.
- An adult should watch at all times.
- No flips or somersaults without proper coaching.
- Kids under 6 should not use a full-size backyard trampoline.
- Check your homeowner's insurance, since some policies have trampoline rules.
Zupapa No-Gap Round Trampoline with Safety Enclosure
You need this if: you want a backyard trampoline with a net enclosure and many sizes to fit your yard.
It is our top pick in our trampoline guide. The no-gap enclosure connects to the jumping mat so kids cannot fall between the net and the springs, it comes in several sizes, and it has a 4.7 star rating from nearly 2,000 buyers.
More choices: best trampolines. We earn a commission when you buy through our links, at no extra cost to you.
Frequently asked questions
What size trampoline is best for a family?
A 12 ft round trampoline suits most families with kids aged 6 to 10. Choose 14 ft or more for older kids.
How much space do I need for a 12 ft trampoline?
About 28 × 28 ft, which leaves 8 ft of clear space on every side.
What size trampoline for a small yard?
An 8 or 10 ft round trampoline, or an 8 × 12 ft rectangle for narrow yards. Keep at least 6.5 ft of clear space.
Is a 14 or 15 ft trampoline better?
Both suit older kids and teens. The 15 ft gives a little more room and often a higher weight limit.
What size trampoline for a toddler?
A small indoor or outdoor toddler trampoline, usually 4 to 8 ft, with a handle or net.
Can more than one child jump at a time?
Safety experts advise one jumper at a time. Most trampoline injuries happen when several people jump together.
