How to Choose the Perfect Necklace Length: A Complete Guide

THE SIMPLE START

What Necklace Length Should You Choose?

For many adults, 18 inches (about 46 cm) is a versatile starting point for a classic pendant necklace. If you want it to sit higher, try 16 inches (about 41 cm). If you prefer a more relaxed drop, compare 20 inches (about 51 cm). These are starting points—not universal fit rules. Neck circumference, body proportions, the chain, and the pendant all change where a necklace actually falls.

A piece that lands at the collarbone on one person may sit noticeably higher on another. That's why trying the length with a string or a chain you already own is more reliable than choosing from a picture alone.

THE USEFUL REFERENCE

Necklace Length Chart: Inches and Centimeters

All measurements are chain lengths; placements are approximate, not guaranteed. Necklace style names vary between retailers.

How to Measure Necklace Length at Home

Method 1: Measure a necklace you already love

Unclasp your necklace and lay it flat without stretching it. Measure the chain from one end to the other, including the clasp, using a flexible tape or ruler. That gives you an approximate chain length to compare with a new purchase. For a pendant necklace, also note how far the pendant hangs below the chain.

Method 2: Try the length with a soft string

Cut a non-stretch string to the length you are considering, bring the ends together gently around your neck, and look in a mirror. Check where the lowest point falls. Test the length with the actual neckline you wear often. Avoid pulling a short string tight or treating a tight fit as comfortable.

Method 3: Compare two favorite lengths

If 16 and 18 inches both appeal to you, test both. The two-inch difference can change how a pendant sits above or below a top's neckline. Check the product's actual listed length and whether an extender is included before ordering.

Choose the Length for Your Neckline and Pendant

Crew neck: A shorter chain can sit above the neckline, or a longer one can fall clearly below it. A chain that lands exactly on the fabric edge may disappear into the outfit.

V-neck: A delicate pendant that follows the shape of the V often looks balanced. Consider where the pendant ends, not just where the chain rests.

Open or scoop neckline: Shorter chains can frame the collarbone beautifully, while a longer pendant adds a vertical line. Decide whether you want the necklace or the neckline to lead the look.

High-neck knitwear: A longer necklace often remains visible over the fabric. Test placement over the garment: thicker materials affect the drape.

For a pear-shaped or heart-shaped pendant, visual depth matters. For a heavier charm, chain thickness and clasp security matter too. Always compare the full finished design rather than choosing length in isolation.

How to Layer Necklaces Without Looking Overdone

Start with one piece you genuinely love. Add a second length that leaves enough space for each pendant to be seen—16 and 18 inches, or 18 and 20 inches, can be useful combinations to try. The right gap depends on pendant size and where each chain sits on your body.

Mixing a delicate chain with a slightly more sculptural pendant can add interest without making the neckline busy. Keep an eye on how the clasps move and whether the chains tangle during regular wear. Adjustable extenders help fine-tune the final arrangement.

Want a more defined vertical drop? Look at a Y necklace such as the Nerisse™ Moissanite Y Drop Necklace. For a classic pear-shaped pendant with selectable chain lengths, explore the Novelle™ Pear-Cut Moissanite Necklace and check the available variant before choosing.

Five Small Mistakes That Make a Big Difference

1. Assuming 18 inches fits everyone the same way. Placement changes with neck circumference and body proportions.
2. Ignoring the pendant's drop. Chain length is not necessarily the total visual length.
3. Skipping a try-on with your clothing. Necklines make a surprising difference.
4. Overlooking extenders. Check whether a listing gives a fixed length or an adjustable range.
5. Choosing from a styled photograph alone. Product photos illustrate a look; the listed dimensions tell you what you are buying.

Frequently Asked Questions

Is a 16-inch or 18-inch necklace better?

Neither is universally better. A 16-inch chain usually sits higher near the base of the neck, while 18 inches is often closer to the collarbone. Check the placement on your own body.

What is the most versatile necklace length?

Many shoppers begin with 18 inches for a classic pendant, but neck size, pendant design and clothing can make 16 or 20 inches more suitable.

Does necklace length include the pendant?

Usually a listed chain length describes the chain, while a pendant adds a separate vertical drop. Read each product's specifications for how its dimensions are presented.

Can I use string to choose a necklace length?

Yes, as a visual estimate. Use non-stretch string and check the drape in a mirror. A real chain may hang a little differently because of its weight and construction.

Is 20 inches too long for everyday wear?

Not necessarily. A 20-inch necklace may give a softer, lower drop that works well over a range of tops. Personal preference and the weight of the pendant matter.

Where can I compare necklace lengths online?

Visit the ELORYVA Jewelry Calculator and select its Necklace Length Guide. Treat the illustrations as estimates and confirm the product's listed dimensions.

Further reading: Tiffany & Co. necklace sizing guide · Jewelers Mutual necklace length reference.