The right necklace length is the one that sits comfortably where you want it to fall. Start with a necklace you already enjoy wearing, or use a soft tape measure to preview a new length. Your neckline, neck size, and pendant all affect the final look.
Measure a necklace you already like
Unclasp the necklace and lay it straight on a flat surface without stretching it. Measure from end to end, including the clasp. If it has an extender, record the length at the point you actually wear it.
Keep this measurement as a shopping reference. A familiar length gives you a more useful starting point than relying on a photograph of someone else.
Preview the length with your outfit
Drape a soft tape measure or piece of string loosely around your neck, adjusting it to the position you prefer. Measure the string afterward if needed. Check the result in a mirror while wearing the neckline you have in mind.
Try the preview over a plain top and then with a favorite outfit. Notice whether you prefer the necklace above the neckline, against your skin, or over the fabric.
Use common lengths as a starting point
Compare 16, 18, 20, 22, and 24 inches during your preview. An 18-inch chain is a common starting option; moving shorter or longer changes where the necklace sits. The same length can fall differently on different people, so your own measurement matters more than a standard illustration.
Check the pendant and chain separately
A pendant can extend below the chain's resting point. Read the pendant dimensions and confirm whether a chain is included. If you are pairing separate pieces, ask whether the chain and its end fittings will pass through the pendant opening and whether the combination is suitable.
Choose with everyday use in mind
For layering, preview the lengths together before deciding. For a gift, a measurement from a necklace the recipient wears often can help. Before ordering, confirm the selected length, metal, clasp details, current shipping estimate, and return eligibility.
Explore chains and necklaces and pendants at Mathews & Peters. If you are unsure about a particular pairing, ask us before purchasing.