The biggest trampolines on sale have mats more than four metres across, and they need the space to match. Kidsafe Victoria's advice is a clear zone at least 2.5 metres wide on every side, so a 5m model needs a patch of lawn about 10m wide.
Size names don't mean the same thing from brand to brand. Most round trampolines are named by the frame's diameter in feet, Vuly uses letters, and JumpFlex names its square MEGA models by the corner-to-corner measurement: its 14ft MEGA is 12ft wide.
| Trampoline | Shape | Overall size | Jumping mat | Weight rating | Price |
|---|---|---|---|---|---|
| JumpFlex MEGA 19ft | Square | 5m x 5m | 4.1m x 4.1m | 225kg per jumper | $3,000–3,500 |
| Springfree Jumbo Oval | Oval | 3.8m x 5.7m | — | — | $4,000–4,500 |
| Vuly Thunder 2 XXL | Round | 5.34m | 4.25m across | 140kg | $1,800–2,000 |
| JumpFlex HERO 15ft | Round | 4.8m | 4m across | 160kg per jumper | $1,400–1,600 |
| OZ Trampolines OzUltimate 14ft | Round | 4.38m | 3.79m across | 130kg per jumper | $900–1,000 |
| Kahuna Blizzard 16ft | Round | 4.87m | Not published | 150kg | $600–700 |
Sizes come from each brand's product pages. The Vuly's weight rating is from Intersport's Thunder 2 listing. Prices were checked on 28 September 2026.
1. Biggest Overall: JumpFlex MEGA 19ft
The MEGA 19ft is the largest backyard trampoline we found on sale in Australia: a square 5m frame with a 4.1m by 4.1m mat, which JumpFlex puts at 173 square feet of jumping area. It's rated for 225kg per jumper and 450kg in total, uses 112 springs of 250mm, and its net stands 2.3m high. JumpFlex covers the frame for ten years and the mat and springs for five.
At about $3,500 it's the second-dearest here, and the anchor kit costs extra.
What We Like:
- 4.1m square mat
- 225kg per jumper
- 10-year frame warranty
What We Don't Like:
- Needs a 10m-wide space
- Anchor kit extra
2. Biggest Springfree: Springfree Jumbo Oval
The Jumbo Oval is Springfree's largest trampoline, 3.8m by 5.7m, with the same rod-held mat and flexible net as the rest of the range. Its warranty covers every part, including the net and rods, for ten years, which no other trampoline here matches.
It's the dearest here by a wide margin.
What We Like:
- Rods instead of springs
- Every part covered 10 years
- Oval shape for long yards
What We Don't Like:
- The dearest here
3. Biggest Round: Vuly Thunder 2 XXL
The Thunder 2 XXL is 5.34m across with a 4.25m mat, held on Vuly's leaf springs rather than coil springs. It costs a little over half as much as the MEGA 19ft. Intersport's Thunder 2 listing rates the XL and XXL sizes at 140kg.
Vuly's warranty covers the frame for ten years and the mat for five, but the net, net poles and leaf springs for one.
What We Like:
- 4.25m round mat
- Leaf springs, no coils
- 10-year frame warranty
What We Don't Like:
- Net and springs covered for 1 year
- 140kg weight rating
4. Best Large Spring Trampoline: JumpFlex HERO 15ft
The HERO 15ft has a 4m mat on 96 springs of 180mm and is rated for 160kg per jumper, more than the Vuly or the OzUltimate. It comes with a ladder and carries the same ten-year frame warranty as JumpFlex's MEGA range.
The anchor kit is an extra, and JumpFlex names American and European standards, not AS 4989.
What We Like:
- 4m mat
- 160kg per jumper
- 10-year frame warranty
What We Don't Like:
- Anchor kit extra
- AS 4989 not claimed
5. Best Under $1,000: OZ Trampolines OzUltimate 14ft
The OzUltimate 14ft has a 3.79m mat on 96 springs of 220mm and comes with an anchor kit and a ladder. It's rated for 200kg combined and 130kg per jumper, and OZ claims compliance with AS 4989:2015.
The frame is covered for five years and the rest for two, less frame cover than the JumpFlex or Vuly.
What We Like:
- Anchors and ladder in the box
- Under $1,000
- 2 years on net and pads
What We Don't Like:
- 5-year frame warranty
- 130kg per jumper
6. Cheapest 16ft: Kahuna Blizzard 16ft
The Blizzard 16ft is 4.87m across and costs well under $1,000, sold by Kahuna and Bunnings. Kahuna lists 108 springs, a ladder, two ground anchors and a 150kg weight rating.
Its warranty is 12 months, and Kahuna doesn't publish the mat size or name a safety standard.
What We Like:
- 16ft for under $700
- Ground anchors included
- 150kg weight rating
What We Don't Like:
- 12-month warranty
- Mat size not published
Other options worth a look
- Springfree Jumbo Round. A 4m round with 132 square feet of jumping area, sold by Springfree.
- JumpFlex MEGA 17ft. A rectangular MEGA with a 3.1m by 4.1m mat, sold by JumpFlex.
Before buying a big trampoline
Measure the whole footprint. Add at least 2.5 metres of clear ground on every side, per Kidsafe Victoria.
Check the weight rating. The ACCC's trampoline guide advises one child on at a time whatever the size, and the ratings here run from 130kg to 225kg per jumper.
Plan for wind. Vuly's product pages warn that a trampoline can be lifted and moved by strong wind. OZ Trampolines and Kahuna's Blizzard 16ft include anchors; JumpFlex and Vuly sell anchor kits separately.
FAQs
What is the biggest trampoline you can buy in Australia?
Of the trampolines we found on sale, JumpFlex's MEGA 19ft, with a 4.1m square mat. The widest round one here is Vuly's Thunder 2 XXL, at 5.34m across.
How much space does a 16ft trampoline need?
A 16ft (4.87m) trampoline plus 2.5 metres of clear ground on each side needs a space about 10m across.
