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Measuring your glasses frame size: Everything you need to know
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Measuring your glasses frame size: Everything you need to know

Measuring your glasses frame size: Everything you need to know

Glasses come in a variety of shapes and sizes, so it’s important to know what fits and what doesn’t. Wearing the wrong size, much like with clothes, can be uncomfortable and unflattering. Go too big and your head can look pea-sized, go too small and your glasses will impact your blood circulation…


It’s tricky to find the perfect pair, we know. That’s why we’ve put together 3 methods to help you measure your glasses correctly in relation to your face so that you’re always sure to pick the pair that’s right for you and avoid all the potentially soul-crushing social ostracization.

Measuring your frames

Method One: Read the signs

Glasses Frame Size

The easiest way to determine your frame size is to look at your current pair of glasses (this is assuming that you have glasses to hand of course. If you don’t, just go straight to method 3). On either temple (arm) there will be a set of printed information. Some will be the manufacturers name or the frame code, whilst  others will refer to the frame size.

The information on the left is the brand name and model number. After this w,e see TV/DVP. Then we have 3 numbers:

53 – This is the width of the lens

20 – This is the bridge length

145 – This is the temple length measurement.

If the glasses you currently own are a nice fit and they suit you, you can use these numbers to browse frames at VisionDirect and find a pair with the same measurements.


Method Two: A bit of DIY

If the information on your glasses has worn away, you can figure out the sizes by measuring them yourself. WARNING: You will need a calculator or someone who is incredibly skilled at mental maths.

Eyeglasses Frame Size

You will need to measure the following:

Lens Size – Measure how wide the lens is at the widest point

Lens Height – Measure the depth of the lens.

Bridge Size – Measure the length of the bridge at the point where the lenses are closest.

Temple/arm Length – Measure the length of the temple/arm including the bend.

Front Width – The front width is two times Lens Width plus the Bridge Width. e.g., Lens Width=47, Bridge Width=16, Total width=110 ((47×2) +16).


Method Three: Face on

  • Look into a mirror and line a ruler up to your face so that you can measure from temple to temple (to make the results really accurate and make yourself luck super cool, put pencils in your ears to ensure you are level)
  • Measure the distance between your left and right temples in millimetres.
  • Write down the results
  • Maybe take the pencils out of your ears.

When buying glasses, choosing a style that is +/- 3mm won’t make too much of a difference. Kepp this in mind when shopping around online.

General fit information

It’s important to follow some general rules to ensure that the frames that you pick will both be comfortable and flattering:

  • The top of the frame shouldn’t be higher than your eyebrows
  • The bottom of the frames shouldn’t rest on your cheeks, even when smiling. If they do then they will cause irritation.
  • The frames should not be wider than your face
  • In general, it’s best to choose frames that compliment your face shape. Large glasses may not flatter small faces and vice versa. In fact, we’ve made a great page on how to find your face shape and get the glasses that really suit you best!

When you buy with us

When you buy at VisionDirect you’ll notice that we provide you with four measurements for our frames. These are:

Lens Width–Bridge Width–Arm Length–Lens Height.

We want to give you the most comprehensive information possible when you’re buying your glasses because we know how personal these accessories really are. They’re part of your everyday wear, and are a real expression of self.


If you still have questions about how to understand the measurements on your glasses frames, and how to measure them, then check out our video that outlines it all in an easy step by step guide!


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