Every garden trampoline has a maximum user weight. That limit is per person, not total — two children at 30kg each on a 50kg-rated trampoline exceeds the limit even though each child individually does not. Exceeding the weight limit does not mean the trampoline collapses immediately. It means the springs stretch further than they were designed to, the mat flexes beyond its intended range, and the frame takes more stress than its engineering specification accounts for. The trampoline wears out faster and the bounce becomes less predictable before it becomes unsafe.
Weight limits by size
These are the typical ranges for garden trampolines by size. Individual models vary — always check the specific weight limit of the model you are buying rather than relying on the size-based ranges below as exact values.
| Size | Typical weight limit | Notes |
|---|---|---|
| 6ft | 50kg | Suitable for children under 7. Not suitable for most adults. |
| 8ft | 75–100kg | Suitable for children up to early teens. Some models handle lighter adults. |
| 10ft | 100–125kg | Covers most children and lighter adults through teenage years. |
| 12ft | 125–150kg | Suitable for teenagers and most adults. |
| 14ft | 150kg | Covers most adults comfortably. Suitable for regular adult use. |
| 16ft | 150kg+ | Highest capacity garden trampolines. Suitable for regular adult use. |
The weight limits above reflect a standard quality range. Models at the higher end of their size category — with heavier gauge steel frames, stronger springs, and reinforced mat attachment — sometimes carry higher limits within the same size. If you are buying for someone near the top of the range, look at the specific product specification rather than the size category average.
What happens if you exceed the limit?
The sequence is gradual, not dramatic. Springs are the first component to show the effects. A spring stretched beyond its design range does not snap — it loses some of its return force. Over time, springs that have been regularly over-stressed stretch further on each bounce and return less force. The mat starts to sit lower at rest and sags more under use. The bounce feels different — less consistent, less responsive.
The mat itself can also show wear faster. A mat flexing more than it was designed to puts extra stress on the attachment points at the edge, where the springs connect. These points wear earlier than they would under designed loads. Eventually you get fraying or thinning at the perimeter before the centre of the mat shows any wear at all.
Frame joints also take more stress. The steel frame is designed to flex within a range. Exceeding that range repeatedly does not produce sudden fractures — it fatigues the metal at welded joints over time. A trampoline used regularly above its weight limit may develop frame joint issues earlier than one used within specification.
None of this means the trampoline becomes immediately dangerous at one kilogram over the limit. It means the useful lifespan is shortened and the safety margin is reduced. A trampoline that might last eight years within its weight limit might need significant parts replacement — or full replacement — at five years if regularly used beyond specification.
Adults on trampolines
Adults can use garden trampolines — within the weight limit of the specific model. The assumption that trampolines are children's equipment and adults should not use them is not correct; it is just that many smaller trampolines are not rated for adult weight, and larger ones often are.
For regular adult use — not just an occasional go, but actual use several times a week — 14ft and 16ft models are the right choice. Our 14ft trampoline range and 16ft range both carry limits of 150kg or more, the springs are heavier gauge, and the bounce quality under an 80-90kg user is genuinely good rather than the flat or unpredictable feel you get from a smaller trampoline carrying more weight than it was designed for.
For occasional adult use — parents having a go, or teenagers who are now adult weight — a 12ft rated to 125-150kg covers most situations. If the household includes any adult over 100kg who wants to use the trampoline regularly, 14ft or 16ft is the safer long-term choice.
Growing children and future-proofing
One of the practical errors parents make when buying a trampoline for a child is checking the weight limit against the child's current weight rather than their likely weight in three to five years.
A seven-year-old weighing 25kg is well within the 50kg limit of a 6ft trampoline today. At ten, the same child might weigh 40kg — still within limits, but the gap between current weight and limit has narrowed substantially. At twelve, at 55kg, the child has exceeded the 6ft limit entirely.
The right approach is to check the weight limit against the weight the primary user will be when they are in full teenage growth — not when they are seven years old and you are standing in a shop. If the trampoline needs to last five or six years, it needs to fit the weight at the end of that period, not the beginning.
This is one of the practical arguments for buying one size larger than feels necessary for the current age. A 10ft trampoline at 100-125kg capacity gives a seven-year-old room to grow to fifteen before the weight limit becomes relevant. For guidance on size selection by age and weight, our trampoline size guide has a full comparison table.
Frequently asked questions
Is the weight limit per person or total for the trampoline?
Per person. The weight limit applies to the individual user, not the combined weight of everyone on the trampoline. This also means the one-jumper rule aligns directly with weight limits — only one person on the mat at a time, and that person must be within the stated weight limit.
Can a heavy adult use a garden trampoline?
Yes, if the trampoline's weight limit covers their weight. 14ft and 16ft models typically handle 150kg or more. Most adults are within this range. For adults over 100kg who want to use a trampoline regularly, a 14ft or 16ft is the practical choice. Smaller models may be technically within limits for lighter adults but will show faster wear under regular adult use.
What happens to a trampoline used over its weight limit?
Springs lose their return force over time, the mat sags lower at rest and bounces less consistently, and frame joints can fatigue earlier than designed. The trampoline will not fail suddenly at one kilogram over the limit, but regular use significantly above the weight limit meaningfully shortens the trampoline's useful lifespan.