Choosing the perfect necklace involves more than selecting a beautiful pendant or chain. The length of a necklace can change how it looks, where it sits on your neckline and how comfortably it works with your everyday wardrobe.
A delicate diamond pendant might look elegant sitting just below the collarbone, while a longer gold necklace can create a relaxed look or complement layered jewellery.
But what is the difference between a 16-inch and an 18-inch necklace? Is 20 inches too long for a diamond pendant? And which chain length should you choose when buying jewellery as a gift?
This necklace length guide explains the most common chain lengths, how to measure your ideal fit and how to choose a necklace that complements your style.
Understanding Necklace Lengths
Necklace length is generally measured from one end of the chain to the other, including the clasp, when laid flat.
Jewellery retailers commonly display necklace lengths in inches, although centimetres are also useful for comparing measurements.
A difference of just two inches can noticeably change where a pendant sits.
For example, an 18-inch chain measures approximately 45.7 cm, while a 20-inch chain measures approximately 50.8 cm.
However, the same necklace may sit differently on different people depending on neck circumference, body proportions, pendant size and clothing.
Necklace Length Chart: Inches and Centimetres
The following chart compares popular necklace lengths and their typical appearance.
| Necklace Length | Centimetres | Typical Position |
|---|---|---|
| 14 inches | 35.6 cm | Close around the neck |
| 16 inches | 40.6 cm | Around the base of the neck |
| 18 inches | 45.7 cm | Around or below the collarbone |
| 20 inches | 50.8 cm | Below the collarbone |
| 22 inches | 55.9 cm | Upper chest |
| 24 inches | 61.0 cm | Mid-chest area |
| 30 inches | 76.2 cm | Lower chest |
These positions are approximate. The same chain can sit higher or lower depending on the wearer.
Download Our Free Necklace Length Guide
Not sure which necklace length is right for you? Download our free Splendid Jewellery Necklace Length Guide to compare popular chain lengths from 14 to 30 inches, including centimetre conversions and styling recommendations.
Download the Printable Necklace Length Guide (PDF)
14-Inch Necklace: A Close-Fitting Style
A 14-inch necklace typically sits relatively close to the neck.
This length is often associated with choker-style jewellery, although its exact fit depends on neck circumference.
Best Suited For
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Close-fitting necklace designs
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Delicate layering
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Minimalist jewellery
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Open-neck clothing
Because this length offers limited room around the neck, measuring before purchasing is particularly important.
A 14-inch necklace may be too short for some adults.
16-Inch Necklace: Elegant and Delicate
A 16-inch necklace commonly sits near the base of the neck on many adult wearers.
It can be a beautiful choice for someone who prefers subtle jewellery that remains visible above certain necklines.
Best Suited For
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Small diamond pendants
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Initial necklaces
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Delicate gold chains
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Minimalist jewellery
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Layered necklace combinations
If you prefer jewellery that sits relatively high, 16 inches may be worth considering.
However, it is important to check your neck measurement rather than assuming this length will fit everyone comfortably.
18-Inch Necklace: A Versatile Everyday Choice
An 18-inch necklace is a popular and versatile option.
For many adult wearers, it sits around or slightly below the collarbone, making it suitable for a wide variety of pendant designs.
This length can work particularly well with:
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Diamond solitaire pendants
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Heart pendants
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Initial jewellery
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Gold necklaces
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Everyday fine jewellery
If you're purchasing a necklace as a surprise gift and are unsure of the recipient's preferred length, 18 inches can be a practical starting point.
However, personal proportions and style preferences still matter.
20-Inch Necklace: A Relaxed, Lower Fit
A 20-inch necklace generally sits below the collarbone.
It offers a little more length than an 18-inch chain, which can create a relaxed appearance and provide extra space for larger pendants.
Best Suited For
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Medium-sized diamond pendants
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Layering with shorter chains
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Certain men's necklace styles
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Lower necklines
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Jewellery worn over some clothing
A 20-inch chain can also be useful for someone who finds shorter necklaces uncomfortable.
22-Inch Necklace: A Longer Everyday Option
A 22-inch necklace typically falls around the upper chest, depending on the wearer.
It can be a good option for someone who prefers jewellery that sits noticeably lower than the collarbone.
This length may suit:
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Larger pendants
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Men's gold necklaces
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Statement jewellery
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Layered necklace combinations
Consider the weight and size of the pendant when selecting a longer chain.
24-Inch Necklace: A Statement Length
A 24-inch necklace generally sits around the mid-chest area, although its exact position varies.
It can work well for jewellery intended to be worn over clothing or as part of a layered arrangement.
Longer necklaces can also create a vertical visual line, which some wearers find flattering.
Best Suited For
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Statement pendants
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Longer gold chains
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Layered styling
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Certain men's necklaces
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Jewellery worn over tops or dresses
30-Inch Necklace: Long and Versatile
A 30-inch necklace typically falls lower on the chest.
This length is often associated with longer statement chains and decorative necklaces.
It can be worn as a single long necklace or incorporated into layered jewellery styling.
Whether it can be doubled comfortably depends on the chain design, clasp and length.
How to Measure Your Ideal Necklace Length at Home
You don't need specialised jewellery equipment to estimate the necklace length that suits you.
Method 1: Measure an Existing Necklace
If you already own a necklace that fits comfortably, this is one of the easiest methods.
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Place the necklace on a flat surface.
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Unfasten the clasp.
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Straighten the chain without stretching it.
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Measure the full length from end to end, including the clasp.
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Record the measurement in inches or centimetres.
This gives you a useful reference when comparing new necklaces.
Method 2: Use a Flexible Measuring Tape
You can also estimate where a particular chain length will sit.
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Use a soft measuring tape.
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Place it around your neck.
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Adjust it to your preferred necklace position.
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Check that the tape sits comfortably.
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Read the measurement.
Remember that a pendant can affect how the finished necklace hangs.
Method 3: Use a Piece of String
If you don't have a flexible measuring tape, use a soft piece of string.
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Place the string around your neck.
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Adjust it to the position you prefer.
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Mark where the ends meet.
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Lay the string flat.
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Measure it using a ruler.
Avoid pulling the string tightly, especially when estimating shorter necklace lengths.
Which Necklace Length Is Best for a Diamond Pendant?
The best chain length depends on the pendant's size, weight and overall design.
Small Diamond Pendants
Smaller diamond pendants often work beautifully with 16-inch or 18-inch chains.
These lengths can keep the pendant relatively close to the neckline, making them suitable for everyday jewellery.
Medium-Sized Diamond Pendants
An 18-inch or 20-inch chain may provide a balanced appearance for many medium-sized designs.
The best choice depends on where you want the pendant to sit.
Larger Diamond Pendants
Larger pendants may benefit from a longer or more substantial chain.
However, length alone does not determine suitability. Chain strength, thickness, clasp quality and pendant weight are also important.
For more advice on selecting a pendant, read our How to Choose the Perfect Diamond Pendant buying guide.
Choosing Necklace Length Based on Your Neckline
Your clothing can influence how a necklace looks.
V-Neck Tops
A pendant that follows the shape of the neckline can create a balanced appearance.
Depending on the depth of the V-neck, 16-inch, 18-inch or 20-inch necklaces may work well.
Crew-Neck Tops
A shorter necklace can sit above the neckline, while a longer chain can fall below it.
An 18-inch or 20-inch necklace may work particularly well, depending on the garment.
Scoop-Neck Tops
Scoop necklines provide room for a variety of necklace lengths.
A diamond pendant sitting within the open neckline can create an elegant focal point.
High-Neck or Turtleneck Clothing
Longer necklaces can work particularly well over higher necklines.
Lengths such as 22, 24 or 30 inches may create a more visible contrast against the clothing.
These are styling suggestions rather than fixed rules. Personal preference should always come first.
How to Layer Necklaces of Different Lengths
Layering necklaces can create a personalised look by combining different chain lengths, textures and pendant designs.
The key is to create enough separation between the pieces.
For example, you might combine:
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A 16-inch delicate gold chain
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An 18-inch diamond pendant
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A 20-inch or 22-inch necklace
This creates a gradual difference in length.
Tips for Layering Necklaces
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Choose chains with different lengths.
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Combine simple chains with pendant designs.
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Avoid using too many heavy pendants together.
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Consider how the chains move when worn.
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Use compatible metal colours for a coordinated appearance.
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Experiment with mixed metals if that suits your personal style.
Our White Gold vs Yellow Gold vs Rose Gold guide can help you choose the metal colour that best complements your existing jewellery.
What Necklace Length Is Best for Men?
Men's necklace preferences vary considerably, but 20-inch, 22-inch and 24-inch chains are common choices.
A 20-inch chain may sit relatively close to the collarbone on some men, while a 22-inch or 24-inch chain generally creates a lower fit.
Neck circumference and body proportions can make a substantial difference.
When choosing a chain for a man, consider:
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Neck size
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Preferred fit
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Pendant size
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Chain thickness
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Whether the necklace will be worn inside or outside clothing
There is no single necklace length that suits every man.
How to Choose Necklace Length as a Gift
Buying a necklace as a surprise is often easier than purchasing a ring because precise finger sizing isn't required.
However, chain length still matters.
Check Their Existing Jewellery
If possible, look at the necklaces they already wear.
Do they prefer shorter chains sitting near the collarbone or longer pendants?
Consider Their Style
Someone who wears minimalist jewellery may prefer a shorter, delicate necklace.
Someone who enjoys statement jewellery or layering may appreciate a longer chain.
Consider an Adjustable Chain
An adjustable chain can provide additional flexibility.
Some designs offer several fastening positions, allowing the wearer to change the necklace length.
Ask About Chain Length Before Ordering
If you're purchasing a pendant and chain together, check whether the chain length can be selected.
Not every necklace comes with the same length or adjustment options.
For more thoughtful jewellery gift ideas, explore our Jewellery Gift Guide: The Perfect Gift for Every Occasion.
Does Pendant Size Affect Necklace Length?
Yes. Pendant dimensions and weight can influence the overall appearance of a necklace.
A small pendant may look particularly delicate on a shorter chain, while a larger pendant may benefit from additional length.
The pendant's bail—the component through which the chain passes—can also affect how it hangs.
When buying online, look for:
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Pendant height
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Pendant width
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Chain length
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Chain thickness
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Bail dimensions
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Whether the chain is included
These details help you understand the complete piece rather than judging its appearance solely from enlarged product photographs.
Common Necklace Length Mistakes to Avoid
When buying necklaces online, avoid these common mistakes:
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Assuming an 18-inch necklace fits everyone identically
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Ignoring neck circumference
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Confusing inches and centimetres
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Forgetting to check whether a chain is included
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Choosing a chain that is too delicate for a heavy pendant
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Assuming every chain is adjustable
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Overlooking the pendant's dimensions
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Choosing a length based only on product photography
Taking a few minutes to check the measurements can help you make a more informed purchase.
Frequently Asked Questions
What is the most popular necklace length for women?
An 18-inch necklace is a widely used, versatile length for women's jewellery. However, 16-inch and 20-inch necklaces are also popular depending on personal style and body proportions.
Is a 16-inch necklace too short?
Not necessarily. A 16-inch necklace can sit comfortably near the base of the neck on some people, but it may feel too short for others. Measuring your neck is the best way to assess the fit.
Is an 18-inch necklace a good length for a diamond pendant?
Yes. An 18-inch chain is a versatile option for many diamond pendants because it generally sits around or just below the collarbone.
What is the difference between an 18-inch and a 20-inch necklace?
A 20-inch necklace is two inches, or approximately 5.1 cm, longer than an 18-inch necklace. It generally sits lower on the chest, although the exact position depends on the wearer.
What necklace length is best for layering?
A combination such as 16, 18 and 20 inches can create a balanced layered look. The ideal spacing depends on pendant sizes and personal preferences.
What necklace length should I buy for a gift?
An 18-inch necklace can be a useful starting point for many adults, but checking the recipient's existing jewellery or choosing an adjustable chain is preferable when possible.
What necklace length is best for men?
Lengths of 20, 22 and 24 inches are common choices for men's necklaces. The right length depends on neck circumference, pendant style and the desired fit.
Can I change the length of my gold necklace?
Some necklaces have adjustable fastening points, while others may require a jeweller to alter or replace the chain. Always check the product specifications.
Does necklace length include the clasp?
Necklace length is generally measured from end to end with the chain laid flat, including the clasp. However, retailers may describe measurements differently, so check the product details.
Does the pendant make the necklace hang lower?
A pendant can change how the necklace drapes because of its weight and dimensions. The pendant itself also extends below the chain, so the lowest point of the finished necklace may be lower than the chain alone.
Final Thoughts
Choosing the right necklace length is about finding a balance between comfort, appearance and personal style.
A 16-inch chain can create a delicate, close-fitting look, while an 18-inch necklace offers versatility for many everyday pendants. Longer chains such as 20, 22 and 24 inches provide different styling possibilities, especially for statement jewellery and layering.
The most reliable approach is to measure a necklace you already enjoy wearing or use a flexible measuring tape to identify your preferred fit.
At Splendid Jewellery, we believe fine jewellery should feel as beautiful to wear as it looks.
Explore our diamond necklaces, diamond pendants, initial jewellery and heart jewellery to discover genuine gold and natural diamond designs for everyday wear and meaningful occasions.