Find the Perfect Fit with Confidence
Choosing the right body jewellery shouldn't feel overwhelming. Whether you're selecting your first piece, replacing existing jewellery or refining a curated collection, this guide explains post lengths, ring diameters, gauges and fit in a clear, expert-led way.
Learn how jewellery sizing works, understand what suits different piercings and discover how to shop with confidence—wherever you are in your jewellery journey.
Three Measurements You'll See Throughout This Guide
Every piece of body jewellery is sized using just three key measurements. Once you understand what each one means, choosing jewellery becomes much simpler.
The rest of this guide builds on these three foundations, helping you confidently choose jewellery that fits comfortably and suits your piercing.
Gauge
The thickness of the jewellery that passes through your piercing.
Post Length
The wearable length of straight jewellery such as labret posts and barbells.
Ring Diameter
The internal measurement of rings and clickers, determining how closely they sit around your piercing.
Each measurement serves a different purpose. The following sections explain them individually, with practical examples to help you understand which sizes are right for you.
Understanding Jewellery Thickness
Gauge refers to the thickness of the part of the jewellery that passes through your piercing.
Most healed piercings are designed to wear one specific gauge, so in many cases you won't need to choose this yourself. If you're replacing existing jewellery, it's usually best to match the gauge you're already wearing unless you've been advised otherwise by your piercer.
Choosing the correct gauge helps your jewellery fit comfortably and protects the health of your piercing.
| Gauge | Metric equivalent | How to use it |
|---|---|---|
| 20G | 0.8mm | A measurement reference only. Match your established jewellery unless a professional piercer advises a change. |
| 18G | 1.0mm | A measurement reference only. Gauge suitability depends on the piercing, placement and existing channel. |
| 16G | 1.2mm | A measurement reference only. This is not an APP-prescribed universal size for any placement. |
| 14G | 1.6mm | A measurement reference only. Do not change gauge simply because a placement is commonly shown at this size. |
If you're unsure which gauge you currently wear, don't worry. Later in this guide we'll explain how to measure your existing jewellery, and if you're still unsure, we're always happy to help.
Choosing the Right Labret Post Length
The required post length depends on your anatomy, the exact piercing position, jewellery design and stage of healing. Initial jewellery often needs enough room for expected swelling. Many piercings then need a professional downsize before they are fully healed once the initial swelling has reduced.
There is no universal post length for a helix, tragus, lobe or other placement, so a web table cannot determine the correct fit for a new piercing.
RING DIAMETER
Understanding Ring Diameter
Ring diameter is the internal measurement of a ring or clicker. It affects how closely the ring sits around the piercing, but the correct diameter is not determined by the placement name alone.
Anatomy, the exact position and angle of the piercing, the jewellery design and stage of healing all matter. A smaller or larger number is not automatically better, and a web guide cannot safely prescribe a universal diameter for an individual piercing.
Close Fit
The ring sits neatly against the piercing with minimal space.
Balanced Fit
Comfortable everyday fit with a natural amount of clearance.
Relaxed Fit
Creates a looser look with more movement and visual presence.
The same 8mm clicker won't look identical in every piercing—or on every person. Anatomy varies, so the ideal diameter is always the one that fits your individual piercing comfortably while achieving the look you want.
Different Jewellery, Different Measurements
Threadless Labret Posts
Threadless Ends
Clickers & Hinged Rings
Straight Barbells
Curved Barbells
Jewellery Types by Piercing Placement
These placement cards show jewellery formats you may see for different piercings. They are not sizing prescriptions. There is no single gauge, post length or ring diameter that can be selected safely from the placement name alone; individual anatomy, the exact piercing position and healing stage determine the required fit.
Helix
- Threadless Labrets
- Flatback Studs
- Clickers
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Flat
- Threadless Labrets
- Flatback Studs
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Conch
- Threadless Labrets
- Flatback Studs
- Clickers
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Tragus
- Threadless Labrets
- Flatback Studs
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Rook
- Curved Barbells
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Daith
- Clickers
- Seam Rings
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Earlobe
- Threadless Labrets
- Flatback Studs
- Clickers
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Nostril
- Nose Studs
- Flatback Studs
- Clickers
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Septum
- Clickers
- Seam Rings
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Navel
- Curved Barbells
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Nipple
- Straight Barbells
Size: anatomy- and placement-dependent. Confirm your established measurement or ask a professional piercer to assess the fit.
Common sizing questions
Will My Jewellery Fit?
Every piercing is unique, so it's natural to have questions before ordering. Here are the answers to some of the sizing concerns we hear most often.
Not always. Even if two people have the same piercing, anatomy can vary. Jewellery that fits one person perfectly may sit differently on another.
Possibly, but if the piercing is still healing, do not simply fit a shorter post yourself. Many piercings require a professional downsize before they are fully healed once swelling has reduced. If the piercing is established and healed, compare with a known correctly fitted length or ask us to check the fit.
If your jewellery feels uncomfortable, leaves pressure marks or doesn't move naturally when appropriate, it may be too short or the ring diameter may be too small. Before ordering a larger size, it's worth checking whether the jewellery is actually the correct fit for your anatomy.
Not always. Initial jewellery may need additional room for expected swelling, and many piercings need a professional downsize before they are fully healed. The final wearable length or diameter is still anatomy- and placement-dependent.
If you're unsure before ordering, we'd always recommend getting in touch first. A little guidance can often prevent ordering the wrong jewellery and helps ensure the best possible fit.
We can help narrow down the right route from your placement and current jewellery, but photographs cannot reliably establish an exact measurement for every piercing. Where the fit is uncertain, particularly for new or healing piercings, an in-person professional assessment is the safest option.
Still Unsure? We're Happy to Help.
Choosing the right jewellery shouldn't feel like guesswork. Whether you're replacing existing jewellery or shopping for something completely new, we're here to help you find the right fit with confidence.
Common sizing questions
Will My Jewellery Fit?
Every piercing is unique, so it's natural to have questions before ordering. Here are the answers to some of the sizing concerns we hear most often.
Not always. Even if two people have the same piercing, anatomy can vary. Jewellery that fits one person perfectly may sit differently on another.
Possibly, but if the piercing is still healing, do not simply fit a shorter post yourself. Many piercings require a professional downsize before they are fully healed once swelling has reduced. If the piercing is established and healed, compare with a known correctly fitted length or ask us to check the fit.
If your jewellery feels uncomfortable, leaves pressure marks or doesn't move naturally when appropriate, it may be too short or the ring diameter may be too small. Before ordering a larger size, it's worth checking whether the jewellery is actually the correct fit for your anatomy.
Not always. Initial jewellery may need additional room for expected swelling, and many piercings need a professional downsize before they are fully healed. The final wearable length or diameter is still anatomy- and placement-dependent.
If you're unsure before ordering, we'd always recommend getting in touch first. A little guidance can often prevent ordering the wrong jewellery and helps ensure the best possible fit.
We can help narrow down the right route from your placement and current jewellery, but photographs cannot reliably establish an exact measurement for every piercing. Where the fit is uncertain, particularly for new or healing piercings, an in-person professional assessment is the safest option.
Still Unsure? We're Happy to Help.
Choosing the right jewellery shouldn't feel like guesswork. Whether you're replacing existing jewellery or shopping for something completely new, we're here to help you find the right fit with confidence.