International Pattern Size Chart

Find your size using your bust measurement and the closest modern size in your country.

Vintage Pattern Size Bust (inches) Bust (cm) UK Size France Size Germany Size Italy Size Spain Size US / Canada Size
12 30 76.2 4 – 6 34 32 38 34 0 – 2
14 32 81.3 6 – 8 36 34 40 36 2 – 4
16 34 86.4 8 – 10 38 36 42 38 4 – 6
18 36 91.4 10 – 12 40 38 44 40 6 – 8
20 38 96.5 12 – 14 42 40 46 42 8 – 10
40 40 101.6 14 – 16 44 42 48 44 10 – 12
42 42 106.7 16 – 18 46 44 50 46 12 – 14
44 44 111.8 18 – 20 48 46 52 48 14 – 16
46 46 116.8 20 – 22 50 48 54 50 16 – 18
48 48 121.9 22 – 24 52 50 56 52 18 – 20
50 50 127 24 – 26 54 52 58 54 20 – 22
52 52 132.1 26 – 28 56 54 60 56 22 – 24
54 54 137.2 28 – 30 58 56 62 58 24 – 26

How to Measure your Bust

  • Use a soft measuring tape.
  • Measure around the fullest part of your bust, keeping the tape level and snug (not too tight).
  • Compare your measurement to the chart (inches or cm) to find your size.

Important Information

These are approximate modern size equivalents based on bust measurements, not guaranteed brand-to-brand conversions.

Use your bust measurement as the key to finding the right pattern size, especially when shopping across countries or brands.

Some brands may have slight variations, particularly in larger sizes.

If you’re unsure, always check the pattern instructions or contact us for advice.