Women's Standard Necklace Sizes
14" Necklace
Fits most like a choker
16" Necklace
Falls perfectly around the base of the neck like a collar. On a petite woman it will hit your collarbone while for plus size women it might feel more like a choker.
18" Necklace
A common choice for women that will fall just below the throat at the collarbone. This length is popular for adding pendants which will hang over a crew neck.
20" Necklace
Will fall a few inches below the collarbone and allow a little more breathing room. Perfect for a low, plunging neckline or if you want to wear it over a turtleneck.
22" Necklace
Falls at or above a low neckline.
24" Necklace
Falls below any neckline.
36" Necklace
Common with pearl strands and will hang below the bosom. They can be worn as a single strand or you can double them for an 18-inch necklace.
Men's Standard Necklace Sizes
18" Necklace
A shorter length that falls just around the base of the neck. Popular for beaded necklaces so they can sit above a crew neck t-shirt.
20" Necklace
A common length for men which falls right at the collarbone. Pendants will hide under a crew neck or show completely with a low v-neck or unbuttoned dress shirt.
22" Necklace
Falls a few inches below a collar bone and can be worn over or under a shirt. This is a common length for chains because they offer more breathing room.
24" Necklace
Extra-long and is commonly used to keep religious or meaningful pendants under the shirt and closer to the heart. Falls just above the sternum.