Trampolines are a fantastic addition to any backyard or recreational facility. They offer endless hours of fun, fitness, and even some airborne stunts for the adventurous ones. However, like any equipment, there comes a time when you need to either replace parts or ensure it fits perfectly in a designated space. That’s when the question arises: How do you measure a trampoline accurately? Our detailed guide will help you navigate this process seamlessly.

Why is Accurate Measurement Crucial?

Safety Concerns:

Trampolines consist of various parts that need to fit together flawlessly. If you’ve ever wondered why a minor inaccuracy could be a big deal, think about it this way: an ill-fitting trampoline mat or net can compromise the entire safety of the equipment. Incorrect measurements could result in gaps or over-stretched parts, both of which can lead to accidents.

Maximizing Space:

Trampolines, especially the larger ones, demand significant space. By accurately measuring your trampoline, you can ensure it fits well within your designated area, whether it’s in a backyard or a recreational facility, without obstructing pathways or other structures.

Budgetary Implications:

Imagine purchasing a replacement part, say a safety net or a mat, only to find out it doesn’t fit. Not only would you have to bear the return and re-purchase costs, but you might also experience downtime where the trampoline remains unusable.

The Basics: How Do You Measure a Trampoline?

The shape of your trampoline dictates the method you’d employ to measure it. Let’s delve into the specifics:

Understanding Trampoline Shapes

  1. Round: These are the most popular backyard trampolines and are known for their consistent bounce throughout the mat.
  2. Rectangular: Preferred by gymnasts and athletes, these offer a more powerful bounce and are often found in training facilities.
  3. Oval: A fusion of round and rectangular, oval trampolines provide a large bouncing area while distributing the bounce more evenly than rectangular ones.
  4. Square: While less common, these are a great space-saving option without compromising much on the bounce area.

Measuring the Frame

  • Round Trampolines: Place your tape measure at one edge and extend it straight across to the opposite edge to get the diameter.

  • Rectangular and Square Trampolines: Measure the length (the longer side) and the width (the shorter side) separately.

  • Oval Trampolines: This can be slightly tricky. Measure the longest diameter first, then the shortest one.

How to Measure a Trampoline Mat

The mat, also known as the jumping surface, does not span the trampoline’s entire diameter.

Deduct the Frame:

First, measure the full diameter (or length and width for rectangular shapes). Then, from this measurement, subtract the width of the springs and the frame itself. This will give you the actual size of the jumping surface.

Take Into Account the Springs:

When determining the exact size of the mat, ensure the springs are uncompressed. This will give you the most realistic measurement of the mat’s dimension, especially if you’re looking to replace it.

How to Measure Trampoline Springs

This is another simple but vital measurement when measuring a trampoline. To measure the correct size of the springs, you’ll need to get one of the current springs. Next, measure the length of the spring from one end to the other. Importantly, count the number of the existing springs, including the ones that may have snapped, to ensure that you replace them with the manufacturer’s recommended number of springs.

How to Measure Trampoline for Net

Trampoline enclosure nets are not universal. You need to understand the basics to ensure that you don’t end up with the wrong safety net. Obviously, the first thing that you want to consider when buying a replacement enclosure net for your enclosed trampoline is the shape of your trampoline. There are nets for all trampoline shapes.

Next, you’ll need to count the number and type of your enclosure structure.

Again, these posts come in various types; straight poles, arch poles, and ring on top.

  • If your trampoline has straight poles, you simply count the number of net support poles on your trampoline. The next biggest consideration is whether you need a net that attaches inside or outside the jumping mat.

  • If your trampoline has arch poles, start by counting the number of arches on your trampoline. Next, determine the type of net that you want- a sleeve-style net or strap type of net?

  • If yours is a ring-on-top enclosure system, simply start by counting the number of poles and determine whether it attaches inside or outside the mat.

Advanced Tips for Precise Measurements

Measurement accuracy can be the difference between a perfect fit and a misfit. Here are some pro tips to ensure you nail it every time:

Use Quality Measuring Tools:

An old, bent tape measure can give you skewed results. Invest in a good tape measure, preferably one that’s long enough for the biggest trampolines.

Double-check Your Measurements:

It might sound repetitive, but measuring multiple times can save you from potential headaches. It’s easy to make small errors, especially on larger trampolines.

Seek Assistance:

For larger trampolines, having a friend or family member help can be invaluable. They can hold one end of the tape while you measure, ensuring you get a straight, accurate measurement.

Decoding the Size: How to Measure a Trampoline Size

The size of your trampoline isn’t just about the frame or mat. It’s the entire setup.

Include the Entire Structure:

If your trampoline comes with additional attachments like a safety net, ladder, or even a basketball hoop, ensure you account for the space these additions take.

Compare with Manufacturer’s Specifications:

If you’ve kept the user manual (and you should!), cross-reference your measurements. Manufacturer specifications can serve as a helpful checkpoint to ensure you’re on the right track.


While trampolines bring joy, ensuring their safety through accurate measurements is paramount. The next time you find yourself pondering over how to measure a trampoline size or its mat, take a deep breath, grab your tape measure, and revisit this guide. With a little patience and precision, you’ll have accurate measurements in no time, ensuring your trampoline remains a safe and enjoyable space for everyone.