A plug marked 2g is bigger than one marked 8g, which feels backward until you know how gauge sizing works. This ear gauge sizing guide makes the numbers easier to shop, whether you are buying your first pair of standard earrings, moving up a size, or replacing jewelry for healed stretched lobes.
For stretched ears, the millimeter measurement is usually the number to watch most closely. Gauge labels are common at smaller sizes, but they stop being as useful once plugs and tunnels get larger. Check both the gauge and millimeter size before adding jewelry to your cart.
How Ear Gauge Sizes Work
Gauge is a wire-sizing system used for body jewelry. With gauges, a lower number means a thicker piece of jewelry. That means 18g is thinner than 16g, 14g is thicker than 16g, and 2g is much thicker than 8g.
Once jewelry reaches 0g and 00g, many sellers switch to fractions of an inch or millimeters. This is where shoppers can get tripped up. A 0g piece is 8 mm, while 00g is about 10 mm. After that, sizes are generally listed as 12 mm, 14 mm, 16 mm, and up.
There can be small differences between brands, especially around 0g and 00g. For example, one item labeled 00g may measure 9 mm while another measures 10 mm. The product measurement in millimeters is the best way to confirm what you are getting.
Ear Gauge Sizing Guide: Gauge to Millimeter Chart
Use this chart as a quick reference when comparing plugs, tunnels, tapers, and other ear jewelry.
| Gauge size | Approximate millimeters | Approximate inches |
| --- | ---: | ---: |
| 20g | 0.8 mm | 1/32 in. |
| 18g | 1.0 mm | 3/64 in. |
| 16g | 1.2 mm | 3/64 in. |
| 14g | 1.6 mm | 1/16 in. |
| 12g | 2.0 mm | 5/64 in. |
| 10g | 2.4 mm | 3/32 in. |
| 8g | 3.0 mm | 1/8 in. |
| 6g | 4.0 mm | 5/32 in. |
| 4g | 5.0 mm | 3/16 in. |
| 2g | 6.0 mm | 1/4 in. |
| 0g | 8.0 mm | 5/16 in. |
| 00g | 10.0 mm | 3/8 in. |
| 1/2 in. | 12.0-13.0 mm | 1/2 in. |
| 5/8 in. | 16.0 mm | 5/8 in. |
| 3/4 in. | 19.0 mm | 3/4 in. |
| 1 in. | 25.0 mm | 1 in. |
If you are between sizes or are not sure what you currently wear, measure the wearable area of a plug you already own with a caliper. Do not measure the flares, since those are wider than the portion that sits inside your lobe.
Know What Size You Wear Now
The right size is the size your healed piercing can wear comfortably today, not the next size you hope to reach. Jewelry should slide in without forcing it. If you need to push hard, feel sharp pain, or notice bleeding, stop and go back to your current size.
Look for the measurement in the product details of jewelry you already wear. A pair of 6 mm plugs and a pair of 2g plugs are generally the same size. If the label only says 00g, check whether it is listed as 9 mm or 10 mm before ordering a replacement.
Also check the wearable length. Single-flare plugs, double-flare plugs, and screw-back tunnels can fit differently even when the diameter is the same. Thick lobes may need a longer wearable area, while a short wearable area can make jewelry feel tight or difficult to remove.
Choosing Jewelry for Your Current Stretch
For a newer or sensitive stretch, simple single-flare plugs are often the easiest option. One end has a flare to hold the plug in place, while the other uses an O-ring. They are usually easier to insert than double-flare jewelry and do not require you to push a larger flare through the lobe.
Double-flare plugs and tunnels have wider ends on both sides. They can look clean and stay put well, but the flare measurement matters. A 10 mm double-flare plug may have flares larger than 10 mm, so it is best for a fully healed, settled stretch with enough room for insertion.
Screw-back tunnels offer another option. They can be convenient because one end unscrews, but threads can irritate skin if inserted carelessly. Make sure the threaded section is fully through the piercing before tightening the back.
Material matters too. For fresh stretches, smooth nonporous materials such as implant-grade titanium, glass, or quality steel are common choices. Silicone can be comfortable in healed lobes, but it is not a good choice for stretching or for irritated skin. Natural materials like wood, stone, horn, and bone can be great for a finished look, yet they need more care and may vary slightly in size.
How to Size Up Without Rushing
Healthy stretching takes time. Your lobes need time to relax and heal between sizes, and there is no single schedule that works for everyone. The best signal is comfort: your current jewelry should move easily, with no tenderness, swelling, redness, or crusting, before you consider going larger.
A small increase is easier on the tissue than a big jump. Half sizes can be especially helpful around 2g to 0g and 0g to 00g, where the millimeter difference is larger than many earlier gauge jumps. If a standard next size does not fit easily, do not force it. Stay at your current size longer or use a properly sized in-between plug when your lobe is ready.
Stretch after a warm shower if your lobes are relaxed, use a body-safe lubricant if needed, and insert jewelry gently. Pain is not part of a successful stretch. A stinging feeling, resistance, tearing, or sudden swelling means the tissue is being pushed too far.
Avoid using acrylic or silicone to make a fresh stretch, and do not rely on heavy jewelry to pull your lobes larger. Weight can thin the lower part of the lobe and create an uneven stretch. If you have a blowout, infection symptoms, ongoing pain, or skin that looks thin, remove the pressure and speak with a qualified piercer or medical professional.
Common Ear Gauge Shopping Mistakes
The most common mistake is assuming a gauge number gets larger as the jewelry gets thicker. Remember: 20g is small, 14g is thicker, and 2g is much larger. The second mistake is treating 0g and 00g as interchangeable. They are separate sizes, usually 8 mm and 10 mm.
Another issue is ordering based on the overall look of a plug rather than its wearable measurement. Decorative fronts, flares, and tunnel rims can make two pieces look very different, but the diameter is what determines fit. If you wear 12 mm, shop for 12 mm unless the product description clearly explains a different wearable size.
Finally, do not purchase the next size just because a sale is happening. It is fine to build a collection for later, but only wear jewelry that fits your lobes now. A good fit keeps your stretch looking better and makes changing your style much easier.
Your ear jewelry should feel like part of your look, not a struggle to put in. Start with the size you can wear comfortably, check the millimeters before you buy, and choose plugs or tunnels that match where your stretch is today. When you are ready to switch up your style, browse the size first, then pick the color, material, and design that feels like you.