Option 1: Measure a Necklace You Already have

Lay the necklace flat on a table, unclasped, and measure it from end to end—including the clasp—with a measuring tape or ruler. Not quite the right length? Use it as a reference to decide if you’d like your new necklace a little longer or shorter.

Option 2: Use a string (DIY Style)

No necklace to measure? No problem. Grab a piece of string, wrap it around your neck where you’d like the necklace to sit, and mark the spot. Then, measure the string with a measuring tape to find your ideal length.

In both cases, make sure to note the length down in inches. 

*You can get an extender chain for extra flexibility, letting you adjust the length for any look or occasion.