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How Are Trampolines Measured?

When you shop for trampolines or need replacement parts, getting your measurements spot-on is crucial. Whether you have a round or rectangular model, we'll guide you through the proper measuring techniques to ensure you get exactly what you need.

Understanding Trampoline Measurements

Round Trampolines

Diameter Measurement

Round trampolines are measured across their widest point - the diameter of the metal frame. Common sizes in the UK are 8ft (244cm), 10ft (305cm), 12ft (366cm), and 14ft (427cm). This measurement is what you'll see when browsing trampoline sizes.

Common Round Trampoline Sizes:
  • 8ft = 244cm
  • 10ft = 305cm
  • 12ft = 366cm
  • 14ft = 427cm

Frame vs Jumping Area

The actual jumping area is typically about 30-40cm smaller than the frame size. For example, a 12ft frame will have approximately an 11ft usable jumping surface.

how are trampolines measured in feet with man measuring in his garden

Rectangular Trampolines

Length and Width Measurements

Rectangular trampolines require two measurements - length and width. Common sizes include 8x12ft (244x366cm), 9x14ft (275x427cm), and 10x17ft (305x518cm).

Size Tip: Always measure the frame, not the jumping mat, when ordering replacement parts.

Measuring Your Trampoline

Round Trampolines

Step-by-Step Measurement Guide

  1. Clear away any debris or water from your trampoline
  2. Get a metal tape measure long enough to span the frame
  3. Measure from outer edge to outer edge through the centre
  4. Take a second measurement at a different angle
  5. If the measurements differ slightly, use the larger one
Remember: Measure twice, order once! Even a few centimetres can make a difference when fitting replacement parts.

14ft trampoline measurements with woman measuring her trampoline

Rectangular Trampolines

Length Measurement

Measure the longest side of your trampoline frame from outer edge to outer edge. Take the measurement at both sides to ensure accuracy.

Width Measurement

Measure the shorter side of your trampoline frame from outer edge to outer edge. Again, measure both sides for accuracy.

Part to Measure Where to Measure Common Mistakes
Frame Outer edge to outer edge Measuring the mat instead of frame
Springs Hook to hook when relaxed Measuring while stretched
Safety Net Frame circumference Measuring net height only

how are trampolines measured in cm image of trampoline with tape measure

Why Accurate Measurements Matter

Getting the Right Parts

Accurate measurements ensure compatibility when ordering replacement parts. Even small discrepancies can affect the fit and performance of your trampoline.

Spring Measurements

Springs need particularly careful measurement. Measure from hook end to hook end while the spring is relaxed. Common lengths are 5.5 inches (140mm), 7 inches (178mm), and 8.5 inches (216mm).

Safety Considerations

Using incorrectly sized replacement parts can compromise your trampoline's safety features and stability. The mat tension needs to be evenly distributed, which only happens with properly sized components.

Need Help? Send us a photo of your trampoline with a tape measure in view - we'll help confirm the exact size you need.

Getting the Right Fit

For the best performance and longevity of your trampoline, using correctly sized replacement parts is essential. Not sure about measurements? Give us a quick call or message - we're happy to help you find the perfect fit.

Have you checked out our other posts?
Previous article Are Springfree Trampolines Hard to Put Together?
Next article Why Are Trampolines Black?

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