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How to Measure Underwires

It’s really hard to know what bra size you wear, let alone what size underwire you need.
Every company that makes bras and bra sewing patterns has their own sizing, some overlap, but often they don’t.

When viewing an underwire product page on our site you’ll notice a button along the side labeled “+ Technical Specs” – Clicking this link will display the exact measurements of the underwires.

Screen Shot 2015-11-23 at 2.44.52 PM

This is what you’ll see:

Screen Shot 2015-11-23 at 2.45.08 PM

If you are unsure how to get the Length, Depth, and Width use this as your guide.


The Length is measured around the curve from tip to tip. The Width is straight across from tip to tip. The Depth is measured from the center point of the Width to the bottom of the curve.

***Also, in the Technical Specs you will find a printable PDF with a tracing of all of our underwires. Print it out at 100% (make sure it isn’t set to “Fit to Page”) and you can compare our underwires to one you want to replace or your pattern.

Here are the PDF’s of all of our sizes. Print them out at 100% :

Standard Size Underwires

Full Figure Underwires
full figure underwires

Plastic Underwires

Demi Underwires
demi underwires

Happy Bra Making!

This entry was posted in Bra Making, Costume Making, How To, Tips & Tricks.... Bookmark the permalink.

One Response to How to Measure Underwires

  1. Mary Jane Akin says:

    Thank you for the information. It will help me greatly.

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