Discover the right trampoline size for your garden now

The size of the trampoline determines how much jumping fun and safety you have in your garden. In this blog, we clearly explain which sizes are popular, how to calculate the actual jumping area, and how much fall space you should keep around it. Note: the size you see online is often the outer dimension including the safety pad; subtract twice the pad width (usually 30 to 40 cm) from the length and width to know how much mat is left for jumping. We discuss practical recommendations, such as a minimum round size of about 330 cm if multiple children often jump at the same time, and why rectangular trampolines, for example 250 x 350 cm, can offer better jumping performance. We also cover safety tips, the effect of size on price and jumping comfort, and guide you step by step in measuring your garden so you make the right choice for your situation.

What is the best trampoline size for your garden?

The best trampoline size depends on the dimensions of your garden, the number of jumpers, and your budget; we use the term trampoline size to determine which diameter or size fits your situation best.

At Etan, we notice that many customers expect the size listed online to equal the jumping area, but this is not the case: the listed size is usually the outer dimension including the pad. Subtract twice the pad width (usually 30-40 cm for good trampolines) from the length and width to calculate the actual jumping area.

Tip: also read our buying advice to make smart choices when purchasing: 7 smart tips for buying and compare shapes via Round or rectangular trampoline.

How do you calculate the jumping area?

First, calculate the outer dimension (as provided by the manufacturer). Then subtract 2× the pad width. Example: a trampoline with an outer dimension of 370 cm and pad 35 cm has a jumping diameter of 370 - 2×35 = 300 cm.

Why is this calculation important?

The jumping mat is the only surface where you can safely jump. If you only look at the outer dimension, you overestimate the space, which can lead to wrong expectations about jumping comfort and safety.

Practical example

A popular size is 244 cm (8 ft). With a pad of 30 cm, 244 - 2×30 = 184 cm remains as jumping area. That is small and often not comfortable as children get older. Therefore, we recommend, especially with multiple children, at least 330 cm round or a rectangle of 250×350 cm.

Why does size affect safety and jumping comfort?

Size determines both the space to land safely and how smoothly and high a trampoline jumps.

Fall space: how much should you keep around the trampoline?

Keep 1 to 2 meters of free space around the trampoline; 1.5 meters is a good guideline. With a safety net, 1 meter is usually enough; without a net, we recommend 1.5-2 meters.

Number of jumpers and recommended sizes

Officially, a trampoline is designed for one person at a time. In practice, children often jump together. If you expect children to do this, choose a larger size: at least 330 cm round. For better jumping performance and more space, we recommend rectangular, at least 250×350 cm if multiple children jump regularly at the same time.

Jumping comfort and springs

The jumping feel depends on the length and thickness of the springs, the number of springs, and the size of the jumping mat. In short: longer springs and a larger jumping mat generally provide a smoother jump. But very large diameters (e.g., >430 cm) do not always jump optimally because the forces and spring layout may be less efficiently distributed.

Shape choice: round or rectangular?

Round trampolines automatically guide the jumper to the center and are often safer for young children. Rectangular models provide better performance and more consistent jumping force across the mat. Read more about which shape fits your goal in our comparison: Round vs Rectangular.

How do I measure my garden to choose the right size?

Measuring starts with the trampoline's outer dimensions plus the fall zone; this ensures that the chosen trampoline fits and stands safely.

Step-by-step measuring

1. Measure the available space in your garden in length and width (in cm).
2. Determine the desired fall zone: +100-200 cm around the trampoline.
3. Note fixed obstacles (garden furniture, fence, trees, height of overhanging branches).
4. Choose a trampoline whose outer dimension + fall zone fits within the available space.

How to account for height

Jumpers can jump high; account for branches and roofs. Maintain a free height of at least 4-5 meters if you want to jump higher.

Practical measuring example

If you have a garden of 5×6 meters, with a 1.5 m fall zone around, you can place a trampoline with an outer dimension of about 220×320 cm. In such cases, a rectangular trampoline can use the available space more efficiently than a round one.

Which sizes are popular and what are the pros and cons?

Popular sizes range from compact 180-244 cm to large 366-430 cm and bigger; each size has clear pros and cons.

Popular round sizes

• 244 cm: compact, suitable for small gardens or beginners, cheaper but less jumping area.
• 330 cm: often chosen for families with young children, offers more space and comfort.
• 366-380 cm: popular family size for medium to large gardens.
• 430 cm and above: XL models, suitable for large gardens, but extremely large does not always jump better.

Popular rectangular sizes

• 250×350 cm: good all-round size, combines jumping quality and space efficiency.
• 300×200 or 335×244 cm: good options for narrow gardens.
• Other rectangular variants are often aimed at performance and long-term use.

Pros and cons per size (short overview)

Small (180-244 cm) - needs little space, affordable, short jumping area, net often needed.

Medium (300-370 cm) - lots of fun, safer for multiple children, more expensive, takes more garden space.

Large (>430 cm) - space for play and multiple children, higher price, may jump less optimally.

Practical buying and safety checklist for the right size

A checklist helps you avoid buying a trampoline that is too small or too large.

Buying checklist (quick)

1. Measure your garden including fall zone.
2. Calculate the actual jumping mat (outer dimension - 2×pad).
3. Choose shape based on use: round for young children, rectangular for performance and multiple jumpers.
4. Check pad width (30-40 cm is common for better trampolines).
5. Ensure a safety net and anchoring options.
6. Compare warranty and material quality (steel thickness, pad material, mat type).

Installation and maintenance tips

• Install springs in a cross pattern for even tension.
• Regularly check screws, springs, and the pad for wear.
• Store the pad or net dry in winter if possible.
• Anchor the trampoline with ground anchors for extra stability.

Budget and lifespan

Larger trampolines are more expensive due to more material and higher transport costs. Remember that higher quality (thicker steel, better galvanization, thicker pad) lasts longer and often provides a better jumping experience. Preferably choose the largest trampoline that fits your budget and garden: it will provide more enjoyment in the long term.

Note: We advise against multiple people jumping at the same time; this increases the risk of accidents. Still, it often happens. If you expect children to jump together regularly, choose a larger size (at least 330 cm round or 250×350 rectangular) and ensure proper supervision and a safety net.

At Etan, we are happy to help you choose the right size and version and always advise which trampoline suits your garden and family best. At Etan, we are ready as experienced trampoline experts.

The size of the trampoline determines both jumping comfort and safety; note that the listed size is usually the outer dimension including the pad, so subtract 2× the pad width to calculate the actual jumping area.

Keep 1-2 meters free around (about 1.5 m as a practical guideline) and also account for height from branches and roofs.

For occasional solo use, a compact size is sufficient, but if you expect multiple children or want more jumping comfort, preferably choose at least about 330 cm round or a rectangle of about 250×350 cm.

Round trampolines guide jumpers to the center and are suitable for young children, while rectangles offer better performance and more efficient use of space in narrow gardens.

Also consider pad width, spring layout, and material quality: a slightly larger, high-quality trampoline often provides more enjoyment in the long term.

Check the described models and links in this blog for more details and comparisons, so you can make an informed choice that fits your garden and family.