What is size 40 French in US sizing?
What is size 40 French in US sizing?
French size 40 is usually an American medium or American size 10.
What size am I in French sizes?
US size + 32 = French size.
How does French sizing work?
This gauge system is known as a French size, which is based upon a measurement of the external diameter of the catheter tube. The French size of a catheter is determined by a simple multiplication of 3 (diameters in millimeters multiplied by 3 = the French size).
