Necklace and Chain Extenders: How They Work and When to Use One

A chain extender is a few inches of extra chain with a clasp on one end and a ring or tag on the other, made to clip between a necklace's own fastening and give it a little more length. Ours adds 3 inches (about 7.5cm), which is enough to move a chain or pendant noticeably lower without buying a whole new necklace.

It's about the smallest piece we sell, and one of the handiest. Here's how it works, how much difference it makes on our chain lengths, when it's the right fix and when you'd be better off going up a size.

A short run of matching links, a lobster clasp at one end and a tag at the other. Featured: 3" Chain Extender (Gold).

Jump to:

• What an extender does
• How much length it adds
• When to use one
• How to attach it
• Will anyone see it?
• Extender or a longer chain?
• Keeping it tangle-free
• FAQs

What Does a Chain Extender Actually Do?

Every chain closes the same basic way: a clasp at one end hooks onto a ring or tag at the other. An extender slots into that gap. Its own lobster clasp hooks onto your chain's end ring, and your chain's clasp then fastens onto the extender's tag. The result is one continuous necklace, just longer.

Nothing is permanent. Unclip it and the chain is back to its original length in seconds, and that's the point: one necklace, two drops. Our necklace anatomy guide names each small component involved, from the jump ring to the bail.

Held out straight, the extra length is easy to see. Featured: 3" Chain Extender (Gold).

How Much Length Will 3 Inches Add?

Our chains come in 5cm steps, from 45cm to 65cm. That makes the extender slightly more than one full size up, so it isn't a fine adjustment; it's roughly the difference between one length and the next, plus a little extra.

Your chain	With the extender	What changes
45cm	about 52.5cm	From snug around the neck to resting near the collarbone
50cm	about 57.5cm	From the collarbone to a little below it, where a pendant shows clearly
55cm	about 62.5cm	From high on the chest to sitting comfortably over a jumper
60cm	about 67.5cm	From mid-chest to a long, relaxed drop
65cm	about 72.5cm	Already long; the extender takes it lower still, so try it first

Exactly where each length lands depends on your neck and build, so treat the right-hand column as a rough guide. For a fuller picture of how each length sits, see our length guide for men's chains.

When an Extender Earns Its Place

• You're between sizes. The chain you own feels a touch tight but the next length up feels too long. An extender lets you try the longer drop before you commit.
• Your pendant sits too high. A pendant that keeps riding up into the collar of a T-shirt usually needs only a few more inches to settle where it shows.
• Winter layers. A chain that sits well on bare skin can disappear under a crew neck or a roll neck. Clip the extender on for knitwear season and take it off again in summer.
• Spacing two chains. If two necklaces sit too close together, adding length to the lower one opens up the gap so each can be seen.
• Buying a gift. Not sure of his neck size? Including an extender with the gift gives him room to adjust without a return.

In silver, finished to match our silver chains. Featured: 3" Chain Extender (Silver).

How to Attach One

1. Undo your chain. Unfasten it and take the necklace off, or hold both ends behind your head if you're happy working by feel.
2. Clip the extender to the end ring. Open the extender's lobster clasp and close it around your chain's end ring or tag.
3. Fasten your chain to the extender. Now hook your chain's own clasp onto the tag at the free end of the extender.
4. Check both joins. Give each clasp a gentle tug to make sure it has fully closed before you let go.
5. Turn it to the back. Slide the joins around so they sit at the nape and any pendant hangs in the middle at the front.

Doing it in front of a mirror the first few times helps. After that, it takes about as long as doing up the chain by itself.

Clip it on at the back, the same way you'd fasten the chain itself. Featured: 3" Chain Extender (Gold).

Two hands and a few seconds is all it takes. Featured: 3" Chain Extender (Silver).

Will Anyone See It?

Very rarely. The extender lives behind your neck, the least looked-at part of any necklace, and ours shares the plated 316L stainless steel core of our chains, so the colour matches. A slim chain is the easiest to hide it on, because the extender's own links are fine and blend in; on a broad Cuban the change in width is easier to spot if someone's standing right behind you.

The one thing to get right is the metal. Pick the extender to match the chain, whether that's gold, rose gold or silver.

Once fastened, it sits out of sight at the nape. Featured: 3" Chain Extender (Gold).

From behind, it simply looks like more chain. Featured: 3" Chain Extender (Silver).

Rose gold, for the rose gold chains in the range. Featured: 3" Chain Extender (Rose Gold).

Matched to the chain, the join is hard to spot. Featured: 3" Chain Extender (Rose Gold).

Extender or a Longer Chain?

An extender is a tool for flexibility, not a substitute for the right size. A simple test helps:

• You switch between lengths. Short in summer, longer over knitwear, or higher for a pendant one day and lower the next: keep the extender.
• It never comes off. If the extender has been on for months, you've found your real length. Buying the next size up removes a clasp and gives a cleaner line.

For example, if you wear a 50cm Connell Chain (Silver) 2mm with the extender every single day, the 55cm version is probably the better buy. The same goes for the Cuban (Gold) 4mm or the Rope (Silver) 3mm. Width matters too: a heavier chain reads shorter on the neck, as our width guide shows. All our lengths and styles are in the chains collection.

Keeping It Tangle-Free

Small chains are the first things to vanish or knot in a drawer. A few habits keep an extender ready to use:

• Store it clipped on, or clipped closed. When it's not on a necklace, fasten its clasp to its own tag so it can't knot itself.
• Give it a home. A small pouch or a compartment of its own stops it disappearing among bigger pieces. Our necklace storage guide has more ideas.
• Untangle gently. If it tangles, ease it apart with a pin rather than pulling. Our untangling tips walk you through it.
• Water rules. Like our chains, it copes with showers and rainy days. Unclip it for swimming or a spa.

Chain Extender FAQs

How long is a CRAFTD chain extender?

Ours adds 3 inches (about 7.5cm) to any chain it's clipped onto. That's a little more than one size up on our chains, which go up in 5cm jumps.

Does the extender show when I wear it?

Not from the front. It sits behind your neck next to the clasp, and because its metal and finish match our chains, it blends into the links.

Can I join two extenders together?

You can, but every extra clasp is one more join to snag or open. If you need that much more length, a longer chain will hang more cleanly.

Will the extender fit chains from other brands?

It's made for our chains. On another chain, check that the end ring is big enough for the lobster clasp to close around before relying on it.

Can I use a necklace extender on a bracelet?

It will clip on, but 3 inches (about 7.5cm) is a lot of extra room on a wrist and most bracelets only need a fraction of that. Measure your wrist first to see how much room you really need.

Can I wear my extender in the shower?

Yes. It has the same 316L stainless steel core as our chains, plated in gold, rhodium or rose gold, so a shower or rain is fine. Unclip it before swimming in chlorine or salt water, and before a hot tub.

Is an extender strong enough for a pendant?

Yes. The pendant hangs at the centre front while the extender sits at the back, so the extender only carries the same light pull as the clasp it's attached to.

Which colour should I choose?

Match the chain. Gold for gold chains, silver for silver and rose gold for rose gold, so the join stays invisible.

A Small Fix With a Big Payoff

A chain extender won't change your style, but it will change how your favourite chain sits, and sometimes that's all a necklace needs. Keep one in the drawer and you've got two lengths for the price of one chain.

Pick the 3" Chain Extender in the finish that matches your chain, or browse our chains to find the length that fits from the start.