How to Measure Necklace Length: The Ultimate Expert Guide for a Perfect Fit

To measure necklace length accurately, simply unclasp the necklace, lay it flat, and measure end-to-end including the clasp with a soft tape measure or ruler. For new necklaces, wrap a soft measuring tape around your neck where you want the necklace to sit, then add 2-4 inches for comfort.
Source: Gemological Institute of America (GIA) recommends this method for jewelry measurements.

Why Measuring Necklace Length Properly Matters

Choosing the correct necklace length affects not just comfort, but also how your jewelry complements your face shape, body type, and neckline. A poorly sized chain can feel awkward, clash with your outfit, or diminish the beauty of your investment pieces. Whether you’re shopping for yourself or as a gift, taking precise measurements ensures your necklace enhances your style — not detracts from it.

Explore our curated Necklaces Collection for timeless designs in perfect proportions.

Quick Necklace Length Chart: Standard Sizes at a Glance

Step-by-Step: How to Measure Your Current Necklace Properly

Flat Measurement Method

1. Unclasp the necklace.
2. Lay it flat on a smooth surface.
3. Stretch it fully without pulling.
4. Measure end-to-end including the clasp with a soft tape measure or ruler.
5. Record the length in inches or centimeters.

Note: Do not include pendants or charms in the measurement. Only measure the chain itself.

Related Reading: How to Clean Jewelry — Keep your necklaces shining after sizing.

How to Measure Your Neck for a New Necklace

Find Your Perfect Necklace Fit (For New Buyers)

Tools Required: Soft measuring tape or string.

Steps:

1. Wrap the tape measure around your neck where you want the necklace to sit.
2. Mark the meeting point.
3. Add 2-4 inches (5-10 cm) for comfort.
4. Round to the nearest standard size (16, 18, 20 inches, etc.).

Why Add Extra Inches?

• Choker Fit: Add 2 inches.
• Standard Fit: Add 3-4 inches for natural drape.
• Layering Pieces: Refer to our chart for harmony between layers.

Also read: How to Measure Ring Size for full jewelry sizing confidence.

Choosing Necklace Length for Body Type, Height & Face Shape

Related: What Diamond Shape Looks the Biggest for more styling proportion tips.

Necklace Lengths & Neckline Pairing (Styling Essentials)

Shop for tailored elegance:

• Necklaces with White Diamonds

• Necklaces with Colored Diamonds

Special Considerations: Men’s Chains & Layering

Standard Men's Necklace Lengths:

• 18-20 inches: Base of the neck
• 22 inches: Below collarbone
• 24 inches: Mid-chest for pendants or bold links

For modern styling, layering multiple lengths offers depth.
Browse Men’s Jewelry Collection for inspiration.

Common Mistakes When Measuring Necklace Length

• Ignoring the clasp in measurements
• Measuring when clasped, not flat
• Forgetting neck movement and outfit type
• Overestimating how pendants change drape length

Related Reading: How to Clean Silver Jewelry — keep your pieces perfect post-measurement.

Related Jewelry Resources for You:

• Lab Grown vs Natural Diamond
  

• Do Lab-Grown Diamonds Hold Their Value?
  

• Average Carat Size for Engagement Rings
  
  

Shop Necklaces in Your Perfect Length at Diana M Jewels

• All Necklaces

• Necklaces with Emeralds

• Necklaces with Sapphires

• Necklaces with Rubies
  

Final Thoughts: Precision Leads to Elegance

Understanding how to measure necklace length correctly ensures your jewelry enhances both your wardrobe and confidence. With Diana M Jewels, precision meets luxury — because jewelry should fit as perfectly as it shines.