Trampoline Sizes: Complete Dimensions Guide

Trampoline sizes range from 8-foot models for small yards to 15-foot family trampolines. This guide compares dimensions, weight capacities, and safety clearances to help you choose the right trampoline for your backyard.

Standard Trampoline Sizes

Trampolines are measured by diameter or dimensions of the jumping mat, with frame size slightly larger.

Trampoline Size Mat Diameter Overall Frame Size Weight Limit
8 ft Round 8 ft / 244 cm 9 ft / 274 cm diameter 175-200 lbs / 79-91 kg
10 ft Round 10 ft / 305 cm 11 ft / 335 cm diameter 200-250 lbs / 91-113 kg
12 ft Round 12 ft / 366 cm 13 ft / 396 cm diameter 250-300 lbs / 113-136 kg
14 ft Round 14 ft / 427 cm 15 ft / 457 cm diameter 300-350 lbs / 136-159 kg
15 ft Round 15 ft / 457 cm 16 ft / 488 cm diameter 350-400 lbs / 159-181 kg
17 ft Round 17 ft / 518 cm 18 ft / 549 cm diameter 400-450 lbs / 181-204 kg

Yard Space Requirements

Required space includes safety clearance around the trampoline and overhead.

Trampoline Size Minimum Yard Space Recommended Clear Space
8 ft Round 14 x 14 ft / 427 x 427 cm 16 x 16 ft with 3 ft clearance all sides
10 ft Round 16 x 16 ft / 488 x 488 cm 18 x 18 ft with 3 ft clearance all sides
12 ft Round 18 x 18 ft / 549 x 549 cm 20 x 20 ft with 3 ft clearance all sides
14 ft Round 20 x 20 ft / 610 x 610 cm 22 x 22 ft with 4 ft clearance all sides
15 ft Round 21 x 21 ft / 640 x 640 cm 23 x 23 ft with 4 ft clearance all sides
17 ft Round 23 x 23 ft / 701 x 701 cm 25 x 25 ft with 4 ft clearance all sides

Trampoline Height and Jumping Surface

Height off ground and jumping area affect safety and bounce quality.

Size Frame Height Jumping Surface Area
8 ft Round 30-36 in / 76-91 cm 50 sq ft / 4.6 sq m usable area
10 ft Round 32-36 in / 81-91 cm 78 sq ft / 7.2 sq m usable area
12 ft Round 32-36 in / 81-91 cm 113 sq ft / 10.5 sq m usable area
14 ft Round 36-40 in / 91-102 cm 154 sq ft / 14.3 sq m usable area
15 ft Round 36-40 in / 91-102 cm 177 sq ft / 16.4 sq m usable area
17 ft Round 36-42 in / 91-107 cm 227 sq ft / 21.1 sq m usable area

Visual Size Comparison

Trampoline size comparison from 8ft to 15ft.

Trampoline size comparison 8ft 12ft 15ft

Trampoline Size Calculator

Find the right trampoline size based on users and yard space.

How to size a trampoline for your yard

Measure the usable area, not the lot

Trampoline diameter: 8′ single user, 10′ standard family, 12′ two adult users, 14′+ shared use. Add 6 ft of safety clearance around the entire perimeter (no fences, walls, or trees inside that buffer) and 24 ft of overhead clearance.

Clearance from structures

Most jurisdictions require setbacks from property lines, structures, and overhead utility lines. Even where setbacks aren't legally required, allow at least 24″ from any wall or fence for maintenance access and to keep moisture from damaging both the structure and the new piece.

Anchoring and weight

Tie-down anchor kits resist 60–100 mph winds; without them, trampolines flip in moderate gusts and damage anything in their path. Bolt enclosure netting in place; loose nets defeat the safety purpose. Inspect springs and pads quarterly — rusted or stretched springs are the most common injury cause.

Common mistakes

  • Sizing to the lot dimensions rather than the level usable space.
  • Forgetting setback rules — some require permits even for things that look freestanding.
  • Ignoring sun and wind direction; the right size in the wrong spot becomes unusable in summer or storms.