Urinary Catheter Sizes and Codes

Sizes of Indwelling Urinary Catheter

Average catheter size for adult is between 14FR to 18FR. 

For male; 14 to 18 fr

For female; 14 to 16fr

For children; 4 to 6 Fr in newborns, 6 to 8 Fr in infants.

Color Coding of Indwelling Catheter

Color Code  Sizes

Green;            6

Blue;.              8

Black;            10

White;.           12

Dark green;  14

Orange;         16

Red;               18

Yellow;          20 

Purple;          22