All of my free patterns are made to a standard size UK12 for a figure that is 172cm tall (that’s a US size 8 – 5ft 8″ tall).

First check your own measurements because there is no one definitive set of measurements, and sizes vary enormously. There are some tips here about how to do it. How to take your own measurements

WHICH PATTERNS WILL SUIT MY BODY SHAPE?

Here are the measurements I use for my sizing:
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There is a lot more to pattern cutting than just adding or reducing inches for each size. There are other factors, such as the deepening of the armhole and additional body length as the sizes increase. However, for a simple pattern, this can sometimes work as a basic starting point. If you would like to have a go at changing the size of some of free patterns, here are some of the difference in measurements.

From the pattern’s current size UK12 measurements:

• A size 8 is approx 8cm smaller around the bust, waist and hips

• A size 10 is approx 4cm smaller around the bust, waist and hips

• A size 14 is approx 4 cm larger round the bust, waist and hips

• A size 16 is approx 8 cm large round the bust, waist and hips

• A size 18 is approx 12cm larger round the bust, waist and hips

• A size 20 is approx 18cm larger round the bust, waist and hips

• A size 22 is approx 24cm larger round the bust, waist and hips