16 Inch vs 18 Inch Necklace: Which Length Should You Choose?

October 28, 2026

You've found the perfect little necklace. The pendant means something, the design feels just right, and you're already imagining wearing it.

Then comes the question.

16 inches or 18 inches?

It's only a two-inch difference, but those two inches can completely change how a necklace looks and feels.

Whether you're choosing a delicate everyday necklace, treating yourself to something meaningful or buying a gift for someone special, here's how to find the length that feels just right.

What's the Difference Between a 16 Inch and 18 Inch Necklace?

The simple answer? Where the necklace sits.

A 16-inch necklace (approximately 41 cm) typically sits close to the base of the neck, around the collarbone. It creates a delicate, slightly higher look that's lovely with open necklines and smaller pendants.

An 18-inch necklace (approximately 46 cm) generally falls a little lower, often just below the collarbone. It has a relaxed, effortless feel and is one of the most versatile choices for everyday jewellery.

Of course, every body is different. Your neck size, proportions and the shape of your neckline will all influence where a necklace actually sits.

And that's why it's worth thinking about more than just the number.

The 16 Inch Necklace: Delicate, Close and Understated

There's something particularly lovely about a necklace that sits a little closer to your heart.

A 16-inch chain creates a neat, delicate silhouette that feels intentionally minimal.

It's a beautiful choice if you love jewellery that quietly becomes part of your everyday style.

A 16-inch necklace might be for you if:

You prefer a shorter, more delicate necklace.
You love wearing open-neck or V-neck tops.
You're looking for a shorter chain to layer with longer necklaces.
You have a smaller neck and prefer jewellery that sits closer.

A tiny symbolic pendant on a shorter chain can feel particularly personal. A little reminder of something meaningful, kept close throughout the day.

One thing to consider: if you have a wider neck or prefer a looser fit, 16 inches may feel a little snug.

The 18 Inch Necklace: Effortless Everyday Versatility

If you're torn between the two, there's a reason 18 inches is such a popular choice.

It gives a pendant a little more room to move, usually placing it just below the collarbone, where it can be beautifully visible against your skin or clothing.

An 18-inch necklace feels relaxed without looking long.

It's the kind of length you can put on in the morning and barely think about again.

An 18-inch necklace might be for you if:

You prefer a slightly looser, more relaxed fit.
You wear a mixture of necklines.
You want a necklace that works beautifully on its own.
You're buying a necklace as a gift and aren't sure which length to choose.

For little pendants with a story to tell, an 18-inch chain gives the design space to become the focus.

It's also often a good starting point if you're buying a necklace for someone else, although personal preference and neck size still matter.

16 Inch vs 18 Inch Necklace: At a Glance

	16 Inch	18 Inch
Length	Approx. 41 cm	Approx. 46 cm
Typical position	Around the collarbone	Around or below the collarbone
Overall look	Shorter and delicate	Relaxed and versatile
Lovely for	Minimal styling and layering	Everyday pendants and gifting
Best if you prefer	A closer fit	A little more movement

Remember, these are general guides rather than exact positions. The same necklace can sit differently on two people.

Which Necklace Length Is Best for Layering?

Here's where that little two-inch difference becomes especially useful.

A 16-inch necklace paired with an 18-inch necklace creates a beautifully simple layered look.

The shorter chain sits higher, while the longer one allows a pendant to become the centrepiece.

You don't need lots of necklaces to make layering feel intentional. Sometimes two delicate pieces, each with its own meaning, are more than enough.

Try pairing a tiny symbolic charm on a 16-inch chain with a slightly more detailed pendant at 18 inches.

Different stories, worn together.

Just bear in mind that pendant sizes and chain movement can affect the spacing between layers.

What If You're Buying a Necklace as a Gift?

A meaningful necklace makes such a lovely gift.

Perhaps it's a little four-leaf clover for someone starting a new chapter. A butterfly for someone embracing change. Or a heart for someone you're especially lucky to have in your life.

But choosing the chain length without knowing exactly how the person likes to wear their jewellery can feel tricky.

If you're unsure, 18 inches is often the more versatile starting point.

It generally offers a little more room and suits a wide range of everyday styling preferences.

However, if you know the recipient loves shorter, delicate necklaces, a 16-inch chain might be exactly what they'd choose for themselves.

A little detective work helps, too. Have a look at the necklaces they already wear. Do they sit close to their neck or fall a little lower?

Sometimes the answer is hiding in plain sight.

How to Find Your Perfect Necklace Length at Home

Still undecided? There's a wonderfully simple way to check.

Take a piece of string or soft ribbon and measure out 16 inches.

Place it around your neck, bringing the ends together where the necklace would fasten. Notice where it sits and how it feels.

Now repeat with 18 inches.

Stand in front of a mirror and try each length with one of your favourite tops.

If you're choosing a pendant necklace, remember that the pendant itself will hang below the chain, so allow for its size too.

Our little tip: If you already own a necklace you love wearing, measure its chain from end to end when laid flat, including the clasp. It's often the easiest way to find your favourite length.