Choosing the right necklace length can make all the difference in how your jewelry looks and feels. While lengths are usually measured in inches, it’s not always easy to know which size will suit you — especially if you’re buying a chain as a gift. The ideal necklace length can vary depending on your build, height, and personal style, and it often sits differently on men and women. Use our simple chain length guide to see how different sizes fit and learn how to measure your perfect necklace length before you buy.