What Size Trampoline Should I Buy - Trampoline Size Guide?
✍️ Gary and the Trampolines Ireland Team — Ireland's leading trampoline experts!
Safety first: BERG and most manufacturers recommend one jumper at a time on any trampoline. The numbers below are about space and supervised play, not how many should bounce together.
How to Figure What Size Trampoline Will Be Best for Your Kids?
When you decide to get a trampoline, you will find a whole array of choices available to you. From different materials to various styles, there are many exciting offerings from the top brands which will be right for your family. It's difficult to choose which one is right for you.
One of the top things to consider when you are buying a trampoline is the size.
After all, there are various sizes available that can make it difficult to choose the perfect one for your family. The most common size is the 10 or 11ft trampoline with a height of 2ft, but there is a whole range of sizes available on the market.
Therefore, here is our guide to choosing what size trampoline to buy.
Age of Your Child
The first thing you need to know when choosing a trampoline for your child is that the age of your kid will guide you to deciding on the size of a trampoline.
After all, certain sizes are only appropriate for older children and there are particular trampolines that are good as starting points for little ones. Here is a look at what is appropriate for certain ages.
Under 3s
When it comes to toddlers, you need to ensure they have a safe and sturdy trampoline where they can bounce to their heart's content. For this age group, it's appropriate to look at a mini trampoline, which is often referred to as a toddler trampoline.
This smaller size trampoline still offers them plenty of room to have a bounce but isn't too overwhelming. It is also less likely for them to incur an injury if they are on a toddler trampoline.
4-Year-Olds
As your child reaches this age bracket, they might be ready to move onto a slightly bigger trampoline. While a mini trampoline will still be sufficient, they might enjoy moving on to a slightly bigger 4.5-6ft trampoline.
This will give them more room to bounce around without coming into harm's way.
5 and 6-Year-Olds
If your child is in the age bracket of 5-6, you should consider looking at trampolines of 6-10ft so they are age-appropriate.
If they are nearer to 5 then a 6ft might be more appropriate, but for those kids heading for 6, a 10ft to 12ft trampoline will provide them hours of fun.
7 and 8-Year-Olds
When it comes to children who are around 7-8 years old, we recommend you go for an 8ft to 12ft trampoline for your garden. This size trampoline is not only age appropriate but will give them enough space to bounce safely as well as try the odd trick or two.
9 and 10-Year-Olds
As the children reach a slightly older age, we would suggest you look at trampolines that are sized between 10ft and 14ft. This size will hold their weight safely and give them plenty of room to bounce around.
11 to 13-Year-Olds
Reaching their teens, we would recommend you go for a trampoline sized between 12ft and 17ft. This size will ensure they have plenty of room to jump around safely.
14-Year-Olds and Up
After the age of 14, we recommend going for a 14ft trampoline or larger. These larger trampolines are built to hold a larger weight and will have enough space for those who are getting more serious about gymnastics.
Of course, each child is different and might be ready sooner depending on their confidence levels and height. You know your child best, but our guide will give you an insight into what is age-appropriate for your child.
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Size of Garden
When it comes to the size of the trampoline, you need to look at your garden size to help you make the vital decision. After all, you want something that will safely fit in your garden. You don't want to pick out something too big that will then need to be replaced.
Before making a purchase, do make sure you measure an area of grass where you would like it to stand. Ensure you pick somewhere away from hazards where your child can get on and off safely.
You can then measure the area so that you know whether you can go for a standard 8ft or have the room for a larger 12ft or even 15ft design.
Family Size
Another thing that can affect the size of the trampoline you should go for is the size of your family. After all, the more children you have, the bigger you will need the trampoline. So if you have a smaller family with one child, you might want to go for an 8ft or even 10ft size.
These are ideal for one child and will keep them happy and safe while bouncing. If you have two or three children, you should consider going for a bigger 12ft trampoline. This will give them more space to share.
Additionally, if you have a large family and your children are older than 10, it would be worth going for a 14ft trampoline. These are great for larger families and also work well when kids have play dates with their friends. They will also grow with your children and have plenty of room if you expand your family.
For a closer look at numbers, see our guide to how many kids an 8ft, 10ft, 12ft and 14ft trampoline will fit safely.
Common Questions About Trampoline Sizes

1. Do trampolines come in specific sizes?
Trampolines come in certain standard sizes: 6ft, 8ft, 10ft, 12ft, 13ft and 14ft. It might seem an obvious consideration, but one that has certainly caught out a few people in the past: make certain that your space is big enough for your new trampoline.
This is particularly important when buying online rather than seeing the trampoline assembled in-store.
Don't forget to include space to protect against the odd wayward bounce. An area of about 3 to 6ft around the outside of the frame is recommended.
The size of the trampoline will determine how high you can bounce. The bigger the trampoline, the bigger the bounce!
2. Can kids of any age use them?
There are strict (but helpful) age guidelines when it comes to choosing the best trampoline for your little ones.
The maximum diameter recommended for children below the age of 5 years old is 8ft, from 6-10 years old a maximum 12ft trampoline is advised, and only when children are over the age of 10 can they progress to the 14ft models.
3. What about bouncing together?
Kids enjoy nothing more than jumping on their trampoline with their siblings and friends.
However, whilst some trampoline sizes are suitable for multiple bouncers, there are also specific guidelines in this department. See our guide to how many kids each size will fit safely.
Trampolines that are 10ft or smaller are designed to be used by one person at a time. In a space this size it's sometimes difficult to control the direction of the jump and, with two bouncing bodies, it could well all end in tears!
If you are looking for a good size trampoline for two children, then the 12ft would be ideal. It has more than enough space for two eager bouncers.
The 14ft trampoline is known as 'The Entertainer'. It will keep multiple children bouncing for hours and certainly put a spring in your step when you host the best garden parties in the neighbourhood!
4. What about weight limits?
If you stick to the guidelines regarding the number of users and their ages, then the weight limits should not be a consideration (not to mention that the more they bounce, the less they will weigh. Trampolines are great exercise!)
However, bear in mind that the recommendations for the weight capacity of a trampoline span 80kg for a 6ft through to 180kg for a 14ft. Heavier jumpers should read our guide to trampolines for heavier kids and adults.
Budget
Your budget will also have an effect on what size trampoline you choose to buy. After all, the prices vary depending on the size.
Hopefully, taking this all into account will help you to make the right decision when it comes to the best size trampoline for your family.