[header] How to choose the right necklace length [title] Measure your neck. [step] Before purchasing a necklace, it's wise to first measure the circumference of your neck. This is especially true if you are considering buying a very short chain, like a collar or choker, since those styles are supposed to fit relatively tightly. 
Wrap a soft measuring tape around your neck, holding it close to your skin. Make a mental note of your measurement and take it into account when selecting a length.