Necklace length is the one measurement people guess at, and it is the one that decides whether a piece gets worn every day or lives in a drawer. An inch is the difference between a chain that sits neatly on the collarbone and one that disappears under a collar.
Here is where each length actually lands, how to check yours in about a minute, and the rule that keeps a layered stack from turning into a knot.
Where each length sits
| Length | Name | Where it sits |
|---|---|---|
| 14" | Collar | Snug around the base of the neck |
| 16" | Choker | At the base of the neck, sitting on the collarbone |
| 18" | Princess | Just below the collarbone — the most ordered length |
| 20" | Matinee | Below the collarbone, above the bust |
| 22–24" | Long / pendant | Mid-chest, where a pendant reads clearly |
If you own exactly one gold chain, make it 18". It works over a crew neck, under a collar, and as the middle layer of any stack.
How to measure yours in a minute
You do not need a tape measure. Take a piece of string or a phone charging cable, hold it around your neck where you want the necklace to sit, pinch the point where the ends meet, then lay it flat against a ruler.
Two things to check while you are there. First, measure where you want the bottom of the piece to fall, not the back of your neck — that is the number that matters for a pendant. Second, if you are measuring for a piece with a pendant, add roughly the height of the pendant, because it hangs below the chain.
Why the same 18" chain looks different on two people
Length is measured on the chain, not on you, so the same number lands differently depending on three things:
- Neck circumference. The bigger the neck, the more chain is used getting around it, and the higher the piece sits. On a larger neck an 18" chain can behave like a 16" does on a smaller one.
- Where your collarbone sits. A longer neck pushes every length upward relative to the collarbone.
- What you are wearing. A crew neck cuts off anything under about 18". A V-neck wants a piece that sits inside the V rather than crossing it. An open collar is the one neckline where a 16" choker and a 22" pendant both work.
This is why measuring with string beats trusting a chart — the chart is a starting point, your neck is the answer.
The 2-inch rule for layering
Layered necklaces tangle for one reason: the chains are too close in length, so they cross instead of stacking.
Leave at least 2 inches between each piece. A 16" + 18" + 22" combination is the reliable three-layer stack — each chain has its own lane, and the gap between the second and third is wide enough to give the bottom piece somewhere to hang.
Two more things that help. Vary the weight: a fine satellite or box chain next to something with more presence like a Cuban or Figaro link reads as deliberate rather than accidental — if you're not sure which link styles actually differ or why, our chain guide breaks that down. And put the piece with a pendant at the bottom, where nothing crosses over it. The full method is in our layering guide.
Chains, pendants, and extenders
A pendant changes the maths. A 3cm pendant on an 18" chain sits roughly where a 20" chain would land empty. If you are buying a chain for a pendant you already own, size up rather than down.
Chain weight matters as much as length. A heavy pendant on a very fine chain looks unbalanced and puts strain on the links. Match substance to substance: a box chain or Cuban link carries weight, a fine cable or satellite chain suits a small charm.
Most of our necklaces include an extender, which buys you 2 inches of adjustment. That is genuinely useful — it means one chain can serve as a 16" choker on its own and an 18" layering piece when you need it, and it takes some of the risk out of buying for someone else.
Buying one as a gift
If you have no measurement to work from, 18" is the safest single choice for an adult, and a piece with an extender is safer still. If you can see a necklace she already wears often, note roughly where it sits — collarbone, just below, mid-chest — and match that rather than guessing a number.
The short version
- 14–16" sits at the base of the neck, 18" just below the collarbone, 20" above the bust, 22–24" mid-chest.
- Measure with a string against a ruler — charts are a starting point, not an answer.
- Layer with at least 2 inches between chains. 16" + 18" + 22" always works.
- Add length for a pendant, and match chain weight to pendant weight.
- Buying a gift with nothing to go on? 18", with an extender.
Bracelet, ring and anklet measurements are on our size guide, and ring sizing has its own step-by-step guide.
Shop 18k gold-filled necklaces →
— The Mondsee Atelier