Pendant Size Chart: How Big Each Pendant Size Really Is
For anyone looking at a pendant listed only in millimeters and trying to picture it on the body. Each size is converted to inches, matched to a coin you can hold up for scale, and placed on a chain length.
Pendants are measured by height (usually including the bail) and width in millimeters. A 25 mm pendant is 0.98 in tall, about the size of a US quarter (24.3 mm). Small pendants are under about 15 mm (0.6 in), medium 15 to 30 mm (0.6 to 1.2 in) and large over 30 mm. A 50 mm pendant is about 2 in tall.
- Small
- Under 15 mm (0.6 in)
- Medium
- 15-30 mm (0.6-1.2 in)
- Large
- Over 30 mm
- 25 mm
- ≈ US quarter, 1 in
On this page
Pendant size chart: mm, inches and real-life comparison
Hold the comparison coin or object up to a mirror at your neckline to see how a pendant of that size will look. Coin diameters are official mint specifications.
| Pendant height | Inches | About the size of | Category |
|---|---|---|---|
| 10 mm | 0.39 in (⅜ in) | The diameter of a AAA battery (10.5 mm) | Small |
| 12 mm | 0.47 in | A standard shirt button (about 11 mm), slightly larger | Small |
| 15 mm | 0.59 in | The diameter of a AA battery (14.5 mm) | Small |
| 16 mm | 0.63 in (⅝ in) | A 1 euro cent | Small to medium |
| 18 mm | 0.71 in | A US dime (17.9 mm) | Medium |
| 20 mm | 0.79 in | A US penny (19.05 mm) | Medium |
| 22 mm | 0.87 in | A US nickel (21.2 mm) | Medium |
| 25 mm | 0.98 in (1 in) | A US quarter (24.3 mm) or 2 euro coin (25.75 mm) | Medium |
| 30 mm | 1.18 in | A US half dollar (30.6 mm) | Medium to large |
| 35 mm | 1.38 in | Between a half dollar and a golf ball | Large |
| 40 mm | 1.57 in | A US silver eagle coin (40.6 mm) | Large |
| 45 mm | 1.77 in | A golf ball (42.7 mm), slightly larger | Large |
| 50 mm | 1.97 in (2 in) | A US military dog tag's length (50.8 mm) | Statement |
| 60 to 75 mm | 2.4 to 3 in | Taller than a credit card's short side (54 mm) | Statement, men's hip-hop |
Small, medium and large pendants
Jewelers do not define the categories formally, but the size bands below match how pendants are sold and worn.
| Category | Height | Typical pieces | Typical chain |
|---|---|---|---|
| Small | Under 15 mm (0.6 in) | Initials, solitaire diamonds, small hearts, birthstones | 1 to 1.5 mm, 16 to 18 in |
| Medium | 15 to 30 mm (0.6 to 1.2 in) | Women's crosses, lockets, coin and medallion pendants | 1.5 to 3 mm, 18 to 20 in |
| Large | 30 to 50 mm (1.2 to 2 in) | Men's crosses and medals, statement pieces | 3 to 5 mm, 20 to 24 in |
| Statement / hip-hop | Over 50 mm (2 in) | Large iced-out pieces, nameplates, oversized medallions | 5 mm and up rope, Franco or Cuban, 24 to 30 in |
Size also grows with area, not just height. A 50 mm round pendant has (50 ÷ 30)² = 2.8 times the face of a 30 mm one, which is why the step from 30 to 50 mm looks much bigger than 20 mm suggests.
How to measure a pendant
- Height: measure from the top of the bail to the bottom of the pendant. That is the overall drop it adds below the chain. Note separately the height of the pendant body without the bail.
- Width: measure across the widest point, left to right.
- Diameter: for a round pendant, height and width of the body are both the diameter. Listings of round medallions often give only this figure, without the bail.
- Thickness: measure front to back. A thin 1 mm disc and a 6 mm puffed heart of the same height look and weigh very differently.
- Bail opening: measure the inside of the loop. It must be larger than the chain's width, and larger than the clasp if you thread the pendant on over the clasp end.
A listing that reads "27.6 × 30.5 mm" gives width then height in most cases. If a second height is listed, the larger one includes the bail. When only one figure is given for an irregular shape, assume it is the height including the bail and ask the seller if it matters.
Where a pendant sits on each chain length
The bottom of the pendant falls below the point where the chain turns by the bail and pendant height. Using the average base-of-neck sizes from the ANSUR II survey (14.6 in for women, 17.1 in for men), a chain hangs roughly half its excess length below the base of the throat; the necklace length chart explains the calculation.
| Chain length | Chain drop below base of neck | Pendant bottom below base of neck | Lands at |
|---|---|---|---|
| 16 in (40.6 cm) | 0.7 in (1.8 cm) | 1.7 in (4.3 cm) | Reaches the collarbone |
| 18 in (45.7 cm) | 1.7 in (4.3 cm) | 2.7 in (6.9 cm) | On or just below the collarbone |
| 20 in (50.8 cm) | 2.7 in (6.9 cm) | 3.7 in (9.4 cm) | Below the collarbone |
| 22 in (55.9 cm) | 3.7 in (9.4 cm) | 4.7 in (11.9 cm) | Upper chest |
| 24 in (61 cm) | 4.7 in (11.9 cm) | 5.7 in (14.5 cm) | Top of the bust |
A heavy pendant pulls the chain into a deeper V, so the real drop is often a little lower. On a man the same chains sit about 1.25 in (3.2 cm) higher, which is why men's pendants go on 20 to 24 in chains.
Typical sizes by pendant type
| Pendant | Women's typical | Men's typical |
|---|---|---|
| Cross | 12 to 25 mm | 25 to 50 mm |
| Saint medal (e.g. St Christopher) | 12 to 20 mm round | 20 to 30 mm round |
| Initial or letter | 8 to 15 mm | 15 to 25 mm |
| Heart | 10 to 20 mm | |
| Locket | 15 to 30 mm | 25 to 35 mm |
| Dog tag | Mini tags around 30 mm | 50.8 × 28.6 mm (2 × 1⅛ in, military standard) |
| Diamond solitaire | Stone 3 to 8 mm (0.1 to 2 ct) | Rare |
A diamond solitaire pendant is sized by carat weight; a 0.5 ct round is about 5.1 mm and a 1 ct is about 6.4 mm, the same figures used for the engagement ring carat chart. For bracelet-sized pieces of 8 to 15 mm, see charm sizes.
Bail size and chain compatibility
A pendant that will not fit over the chain is the most common return. Check the numbers before you buy.
| Chain width | Minimum bail opening | Notes |
|---|---|---|
| 1 to 1.5 mm cable or box | 2 to 2.5 mm | Fits most small pendants; the spring ring clasp usually passes too |
| 2 to 2.5 mm rope or wheat | 3.5 to 4 mm | Rope end caps are wider than the chain |
| 3 to 4 mm rope or Franco | 5 mm | Common for men's crosses and medals |
| 5 mm and up | 6 to 8 mm or an enhancer bail | Large bails are made for heavy chains |
An enhancer or clip-on bail opens and closes, so it fits over any chain and lets you move the pendant between chains. Widths and styles of chain are compared in the jewelry chain guide.
Why a pendant can look the wrong size
- Judging from product photos. Close-up photos make a 12 mm pendant look like a 40 mm one. Always read the dimensions.
- Ignoring thickness. A thick pendant on a fine chain flips over and shows its back.
- Large pendant on a short chain. A 40 mm pendant on a 16 in chain sits against the throat and rides up. Give large pendants at least 20 in.
- Mixing up width and height. Listings put width first more often than not, so an "18 × 25 mm" pendant is usually 25 mm tall.
Pendants stored loose scratch and their chains tangle. A jewelry box with hooks or individual slots keeps each piece separate. Matching studs are sized in the same millimeters; see earring sizes.
Frequently asked questions
How big is a 30 mm pendant?
30 mm is 1.18 in, just under 1¼ in, almost exactly the diameter of a US half dollar (30.6 mm). On a woman it is a noticeable medium-to-large pendant; on a man it is a standard size for a cross or medal.
How big is a 50 mm pendant?
50 mm is 1.97 in, about 2 in. It is larger than a golf ball (42.7 mm) and reads as a statement piece. It has 2.8 times the face area of a 30 mm pendant, so it needs a chain of about 4 to 5 mm or wider.
Is an 18 × 9 mm pendant small or medium?
Small to medium. At 0.71 × 0.35 in it is about the height of a US dime's diameter and half as wide. It sits well on a fine 1 to 1.5 mm chain and is a typical size for a delicate everyday pendant.
Does pendant size include the bail?
Usually, but not always. Many sellers list overall height including the bail, and some list the pendant body only. If a listing gives two heights, the larger one includes the bail, which typically adds 4 to 8 mm.
What size pendant is best for a woman on an 18 inch chain?
Pendants of 10 to 25 mm (0.4 to 1 in) suit an 18 in chain for everyday wear, sitting on or just below the collarbone. Larger pendants of 30 mm and up tend to look better on 20 to 24 in chains, where they hang clear of the collarbone.
How big is a 39 mm pendant?
39 mm is 1.54 in, about 1½ in. It is roughly 1.6 times the width of a US quarter and a little under the 40.6 mm diameter of a US silver eagle coin. It counts as a large pendant.