Trampoline Sizes: 8, 10, 12, 14, 15 ft Dimensions in cm

Round trampoline dimensions chart

The advertised size is the frame's outside diameter. The jumping mat is smaller, because the springs and the padding over them take up the outer ring. Mat sizes vary with spring length, so they are shown as ranges.

Round trampoline sizes in feet, centimeters and meters
Size	Frame diameter	Jumping mat (approx.)	Frame area	Circumference	Typical user weight limit
8 ft	244 cm 2.44 m	6-6.5 ft 183-198 cm	50 sq ft 4.7 m²	25.1 ft 7.66 m	150-200 lb 68-91 kg
10 ft	305 cm 3.05 m	8-8.5 ft 244-259 cm	79 sq ft 7.3 m²	31.4 ft 9.58 m	200-250 lb 91-113 kg
12 ft	366 cm 3.66 m	10-10.5 ft 305-320 cm	113 sq ft 10.5 m²	37.7 ft 11.49 m	250-330 lb 113-150 kg
14 ft	427 cm 4.27 m	12-12.5 ft 366-381 cm	154 sq ft 14.3 m²	44.0 ft 13.41 m	250-400 lb 113-181 kg
15 ft	457 cm 4.57 m	13-13.5 ft 396-411 cm	177 sq ft 16.4 m²	47.1 ft 14.36 m	250-400 lb 113-181 kg
16 ft	488 cm 4.88 m	14-14.5 ft 427-442 cm	201 sq ft 18.7 m²	50.3 ft 15.32 m	300-450 lb 136-204 kg

Weight limits are per jumper and differ widely between brands and frame gauges; use the figure on the label of the model you buy. Metric-market trampolines are often labeled in centimeters, such as 244, 305, 366, 427 and 457 cm, and these are the same frames as the foot sizes above.

8 ft 8 ft10 ft 10 ft12 ft 12 ft15 ft 15 ft

Round trampolines of 8, 10, 12 and 15 ft drawn to scale. A 15 ft frame has 3.5 times the area of an 8 ft one.

How tall a trampoline is

Frame height: the top rail of a backyard trampoline is typically 30 to 36 in (76 to 91 cm) above the ground. Larger frames tend to sit higher so the mat does not hit the ground under a heavy jumper.
With a safety enclosure: the net poles add about 6 ft (1.8 m), so the top of the enclosure is usually 8 to 9 ft (2.4 to 2.7 m) above the ground.
Overhead clearance: manufacturer manuals commonly ask for about 24 ft (7.3 m) of open space above the mat, free of branches, wires and roof edges.

How much yard space a trampoline needs

Most manuals ask for 6.5 to 8 ft (2 to 2.5 m) of clear, level ground on every side, away from fences, trees, sheds, play equipment and hard surfaces. Add twice the clearance to the frame diameter to get the clear circle you need.

Clear area needed around round trampolines
Trampoline	With 6.5 ft (2 m) each side	With 8 ft (2.5 m) each side
8 ft	21 ft 6.4 m circle	24 ft 7.3 m circle
10 ft	23 ft 7.0 m	26 ft 7.9 m
12 ft	25 ft 7.6 m	28 ft 8.5 m
14 ft	27 ft 8.2 m	30 ft 9.1 m
15 ft	28 ft 8.5 m	31 ft 9.4 m
16 ft	29 ft 8.8 m	32 ft 9.8 m

A yard 30 ft (9.1 m) square fits a 14 ft trampoline with the full 8 ft margin. In a 25 ft wide side yard, 12 ft is the largest size that keeps 6.5 ft clear on both sides.

Safety rules that affect size choice

ASTM F381, the US standard for consumer trampolines, states they are not recommended for children under 6 and are designed for one user at a time. The American Academy of Pediatrics discourages home trampoline use; for families who have one, it advises one jumper at a time, no flips or somersaults, padding and constant adult supervision. A bigger trampoline does not make it safe for several children to jump together.

Rectangular trampoline sizes

Rectangular trampolines give a more even, more powerful bounce across the mat, which is why gymnasts train on them. They need more space per square foot of mat, and backyard models cost more than round ones of the same area.

Common rectangular trampoline sizes
Size (ft)	Metric	Frame area	Use
7 × 10	2.13 × 3.05 m	70 sq ft 6.5 m²	Small yards, younger kids
8 × 14	2.44 × 4.27 m	112 sq ft 10.4 m²	Most popular backyard rectangle
9 × 15	2.74 × 4.57 m	135 sq ft 12.5 m²	Teens, tumbling practice
10 × 17	3.05 × 5.18 m	170 sq ft 15.8 m²	Near-competition feel
Competition (FIG)	5.05 × 2.91 m frame; 4.28 × 2.14 m bed	14.7 m² frame	Gymnastics; frame 1.155 m high

For a rectangle, clearance is added to both dimensions: an 8 × 14 ft trampoline with 8 ft each side needs a clear area of 24 × 30 ft (7.3 × 9.1 m).

Comparing trampoline sizes

Area grows with the square of the diameter, so a few feet more across makes a big difference to jumping room.

12 ft vs 15 ft: 113 vs 177 sq ft. The 15 ft frame has 56% more area and needs a clear circle 3 ft wider.
12 ft vs 14 ft: 113 vs 154 sq ft, 36% more. The 14 ft is the usual step up for families with teens.
11 ft vs 15 ft: 95 vs 177 sq ft. The 15 ft model has almost twice the area.
8 ft vs 12 ft: 50 vs 113 sq ft, more than double. An 8 ft model is a starter size for one small child.

Other sizes

Mini and fitness trampolines (rebounders): 36 to 48 in (91 to 122 cm) across, 8 to 12 in high. For indoor exercise, not backyard play.
Toddler trampolines: about 4.5 to 5 ft (137 to 152 cm) with a full enclosure and a frame under 2 ft high.
In-ground trampolines: the same frame sizes set in a pit so the frame is level with the grass. The pit must be deep enough for the mat to sag under a jumper without touching the bottom, and it needs drainage and air vents; follow the depth and shape in the kit's manual.

How to measure a trampoline for a replacement mat, net or pad

Parts are not universal even within one size, so measure before you order.

Frame diameter. Measure across the center from the outside of the frame to the outside on the other side. Do it twice at right angles and use the average.
Number of V-rings. Count the triangular rings sewn around the edge of the mat. The new mat must have the same count as your frame has spring holes.
Spring length. Unhook one spring and measure end to end, hook included. Common lengths are about 5.5, 7 and 8.5 in (14, 18 and 22 cm).
Mat diameter. Measure the mat edge to edge across the center, excluding the V-rings.
Enclosure. Count the net poles and note whether the net hangs inside or outside the springs.
Pad. Measure the frame diameter and the width of the old pad from its inner to outer edge.

Delivery box size

A backyard trampoline ships disassembled in two to four cartons. The longest box is set by the curved top-rail sections. A 14 ft frame split into eight rails gives sections about 5.5 ft (1.7 m) long, and a 12 ft frame split into six gives about 6.3 ft (1.9 m), so expect the main carton to be roughly that long. Check the listed package dimensions before planning to collect one in a car.

For other backyard play equipment, see swing set dimensions and safety zones, playhouse sizes and tree house platform sizes. If a trampoline and an above-ground pool compete for the same lawn, the pool size guide lists their footprints.

Frequently asked questions

What is the most common trampoline size?

For backyard round trampolines, 12 ft and 14 ft (366 and 427 cm) are the most widely sold. An 8 or 10 ft model suits a small yard; 15 and 16 ft models are for large yards and older or heavier jumpers.

How big is a 12 ft trampoline?

A 12 ft trampoline is 12 ft (3.66 m) across the frame, with a jumping mat of about 10 to 10.5 ft (3.05 to 3.2 m). The frame covers 113 sq ft (10.5 m²), and with 8 ft of clearance on all sides it needs a clear circle about 28 ft (8.5 m) across.

What is the circumference of a 15 foot trampoline?

A 15 ft frame has a circumference of 47.1 ft (14.36 m), from π × 15. The perimeter of the jumping mat is shorter, about 41 to 42 ft for a 13 to 13.5 ft mat.

How tall is a 14 ft trampoline?

The frame top sits about 30 to 36 in (76 to 91 cm) off the ground. With a safety enclosure, the top of the net poles is typically 8 to 9 ft (2.4 to 2.7 m) above the ground.

Is an 8 ft trampoline a small size?

Yes. An 8 ft (244 cm) trampoline has a frame area of 50 sq ft (4.7 m²) and a mat about 6 to 6.5 ft across, less than half the area of a 12 ft model. It suits one light child at a time; weight limits are typically 150 to 200 lb (68 to 91 kg).

What size trampoline is 152 cm or 366 cm?

152 cm is a 5 ft trampoline, a toddler or mini size. 366 cm is a 12 ft trampoline. Other common metric labels: 244 cm (8 ft), 305 cm (10 ft), 427 cm (14 ft) and 457 cm (15 ft).