The Ultimate Sizing Guide: How to Find the Perfect Fit for Rings and Hoops
There's nothing worse than excitedly waiting for new jewelry to arrive, only to try it on and find it looks completely wrong. Maybe the hoop is sticking way out from your nose like a doorknocker, or maybe it's so tight it's pinching your septum.
Buying body jewelry online can be tricky if you don't speak the language of "gauges" and "diameters." But finding that perfect, snug fit isn't a guessing game—it just takes a quick measurement. Here's how to navigate sizing for rings, clickers, and hoops so every piece fits exactly how you want it to.
Understanding Gauge (Thickness)
The gauge refers to the thickness of the jewelry bar that goes through your piercing hole. Here's the key rule: the smaller the gauge number, the thicker the jewelry.
20G (0.8mm): The most common gauge for nostril piercings. If you got pierced at a professional studio and aren't sure what gauge you have, there's a good chance it's 20G. Most nose studs, screws, and L-bends come in this size.
18G (1.0mm): The second most common nostril piercing gauge. Slightly thicker than 20G, which makes the jewelry a bit sturdier and less likely to bend. Some piercers prefer 18G for nostrils for this reason.
16G (1.2mm): The standard for septum piercings, daith piercings, and most cartilage piercings. If you have a septum piercing, this is most likely your gauge.
14G (1.6mm): Often used for belly button piercings and some larger septum piercings.
Tip: If you're unsure of your gauge, ask your piercer. Putting a bar that's too thick into a small hole will hurt, and putting a bar that's too thin can cause the hole to shrink over time.
Understanding Diameter (How Wide Your Hoop Is)
This is where most people make sizing mistakes. The diameter is the distance across the inside of the hoop at its widest point. It determines how snugly the ring fits against your body.
A hoop that's too small will pinch the skin, causing irritation or even cutting into the tissue. A hoop that's too big will droop, look awkward, and get snagged easily.
Common Nostril Hoop Diameters
6mm: The snuggest fit. Sits very close to the nose with minimal gap. Best for thinner nostrils or those who want a very tight, hugging look.
7mm: The "Goldilocks" size for many people—not too tight, not too loose. A great middle ground if you're unsure between sizes.
8mm: The most universally popular size. Comfortable fit with a small amount of space between the ring and the nostril. If you're buying your first nose hoop and don't know your size, 8mm is the safest bet.
10mm: A larger hoop that creates more of a statement. There will be a noticeable gap between the ring and your nostril.
Common Septum Ring Diameters
6mm: Very snug, sits tight to the nose. Best for an extremely subtle look.
8mm: The most popular septum ring diameter. Comfortable, visible, but not overly dramatic. This is the standard starting size.
10mm: Hangs a bit lower for a bolder look. Popular for ornate clickers and statement pieces.
12mm and above: Large, dramatic septum jewelry that hangs well below the nose.
How to Measure for Your Perfect Diameter
You don't need fancy tools—just a metric ruler with millimeters and a small strip of paper.
The Edge-to-Hole Method (best for nose and cartilage hoops): Stand in front of a mirror. Place the edge of a small strip of stiff paper or a ruler exactly at the edge of your piercing hole. Measure straight down to the edge of your nostril (or ear rim)—basically, where you want the bottom of the hoop to rest. That measurement in millimeters is your ideal inner diameter.
The Current Jewelry Method: If you already have a ring that fits well, measure the inner diameter with a ruler. Place the ruler across the inside of the ring from inner edge to inner edge.
The Trial Method: If you're ordering online and unsure, order two adjacent sizes (like 7mm and 8mm). Try both and keep the one that fits best.
Understanding Post Length for Studs
For studs, screws, and flat back labrets, post length determines how the jewelry sits in your piercing.
5mm: Best for thinner nostrils or people who find standard posts too long.
6mm: The standard length that fits most people. If you're buying nose studs for the first time, start here.
7mm: For thicker nostrils or during healing when there's still swelling. Your piercer will typically start you with a longer post and downsize once healed.
Wearing an oversized post in a healed piercing is one of the most common causes of irritation bumps. Downsizing to the correct length makes a huge difference in comfort.
Quick Reference Cheat Sheet
Nostril Piercing: Gauge: 20G or 18G. Post length: 6mm. Hoop diameter: 8mm.
Septum Piercing: Gauge: 16G or 14G. Ring diameter: 8mm or 10mm.
Cartilage (Helix, Tragus, Conch): Gauge: 16G. Post length: 5-6mm. Hoop diameter: 6-8mm.
Belly Button: Gauge: 14G. Bar length: 10mm.
For a more detailed sizing breakdown, check out our complete nose ring size guide.
Frequently Asked Questions
What if I order the wrong size?
Don't force jewelry that doesn't fit. If a hoop is too small, it will put pressure on your piercing. If it's too big, it will hang awkwardly. Save your sizes once you find what works so you never have to guess again.
Can I wear a different gauge than my piercing was done at?
You can usually wear one gauge smaller (like 20G in an 18G piercing), but it may feel loose. Wearing a larger gauge than your piercing means stretching the hole, which should only be done intentionally and gradually.
Why does my nose stud stick up instead of sitting flat?
Your post is too long. Most healed nostrils need a 6mm post. If you're still wearing your initial longer healing jewelry, downsizing to a shorter post will fix this immediately.
How do I know what gauge my piercing is?
Ask your piercer—they keep records. If you can't reach them, measure your current jewelry with digital calipers: 0.8mm = 20G, 1.0mm = 18G, 1.2mm = 16G, 1.6mm = 14G. When in doubt, 20G for nostrils and 16G for septums is correct most of the time.
Should I size up or down when unsure about hoop diameter?
Go smaller. A hoop that's slightly too snug looks much better than one that's too big and floppy. You can always size up if needed.
Find Your Perfect Fit
Browse our collection of hinged hoops, nose rings, septum clickers, and flat back studs—all with full sizing information listed on every product.
Shop at VitalPiercing.com — Free shipping over $50.
This guide is for informational purposes only. For precise sizing, we recommend visiting a professional piercer who can measure your piercing directly.