Necklace Length Chart: Inches, Centimeters & Finding Your Fit
A necklace length chart is a useful starting point, but the same necklace won't sit in the same place on everyone. Your neck size and the necklace's shape and bead size affect where it sits. Start with the chart below, then check the length on yourself before ordering.
Necklace length chart in inches and centimeters
| Length in inches | Length in cm | A useful starting point |
|---|---|---|
| 14 | 35.6 | A close fit on some necks; measure carefully |
| 16 | 40.6 | A short necklace that may sit around the base of the neck |
| 18 | 45.7 | A common starting length for an everyday necklace |
| 20 | 50.8 | More room below a shorter necklace |
| 24 | 61.0 | A longer option to try over a top or sweater |
| 30 | 76.2 | A long strand; check where it meets your clothing |
| 36 | 91.4 | A longer drape that can move more as you walk |
To convert centimeters to inches, divide by 2.54. To convert inches to centimeters, multiply by 2.54. Names like “choker” don't tell you the exact size. Check the listed length.
How to measure for a necklace
- Use a necklace you already like. For an openable necklace, lay it straight without stretching it and measure from one end of the closure to the other. For a continuous strand, measure the full loop.
- Try the proposed length on your body. Use a soft tape or a piece of string measured against a ruler. Hold it loosely where you'd like the necklace to sit. Don't pull it tight around your neck.
- Wear the top you have in mind. Check whether the strand sits above the neckline, inside it or on the fabric. Look while sitting down as well as standing.
- Check the product's measuring method. Find out whether the listed length includes an extender and whether a pendant adds a separate drop.
The number on the ruler is only part of the fit. Large beads take up more space inside the loop than a thin chain, and a pendant changes how the front hangs. Compare similar designs when you can.
How to choose the right necklace length for your outfit
For a crewneck: decide whether you want the necklace fully above the collar or resting on the shirt. A strand that lands right on the edge may keep slipping underneath.
For a V-neck: try a strand that follows the opening, leaving enough room for any drop detail. You don't have to match the neckline exactly.
For a sweater: measure over the fabric. A length that feels roomy on bare skin can feel different over a thick knit.
For two layers: choose visibly different lengths and try them together. A length gap can help separate the designs, but it won't prevent every tangle. Remove the pair if the clasps twist together or the stones keep rubbing.
What our listed lengths look like in numbers
- Aquamarine, Clear Quartz & Freshwater Pearl Necklace: 42 cm, approximately 16.5 inches.
- Citrine, Peridot & Freshwater Pearl Drop Necklace: 47 cm, approximately 18.5 inches.
- Freshwater Pearl Long Necklace: 128 cm, approximately 50.4 inches. This is a long strand, not an 18-inch necklace; don't assume it can be doubled comfortably without checking the construction and fit.
Is an 18-inch necklace the safest gift size?
It's a common starting point, not a universal fit. If you're buying a gift, measure a necklace the person already wears or ask about their preferred length. Check the product's adjustment options and return policy before ordering.
Ready to compare designs? Browse our necklaces and freshwater pearl necklaces, keeping the measurements beside you.
Prepared by Mineralyra. Updated October 24, 2026. Product details can change; check the linked listing before ordering. Editorial standards.