Sizing details for Belly Bars

14g is the standard for Belly/Navel piercings although some are pierced with a slightly smaller 16g needle. Either size will fit most piercings.


Note: Most of our items are manufactured in the US and so are designed in Gauge/Inch sizes. We show the mm conversion for simplicity but some manufacturing variation can occur which shows up more in mm measurements.

How items are Measured

Sizing Tool

Not sure what size you're after? Use our handy sizing tool to work out what you're currently using.

Step 1

Find a NZ $2 dollar coin, place it over the virtual coin below. Then use the smaller or larger button until your coin matches the virtual coin. Every computer is different but this this will calibrate the charts so the sizes show correct on your screen.

Step 2

Choose a chart from below to look and match your current body jewellery to get the correct size.

GaugeLengthBall Size
Gauge refers the thickness of the bar. The smaller the gauge, the thicker the bar.
00 Gauge / 10mm
0 Gauge / 8mm
2 Gauge / 6mm
4 Gauge / 5mm
6 Gauge / 4mm
8 Gauge / 3.2mm
10 Gauge / 2.4mm
12 Gauge / 2mm
14 Gauge / 1.6mm
16 Gauge / 1.2mm
18 Gauge / 1mm
20 Gauge / .8mm
Length is usually the wearable length of an item (the space between the balls). Some items also have a total length mentioned.
6mm
8mm
10mm
12mm
14mm
16mm
18mm
20mm
22mm
25mm
Ball size refers to the diameter or the ball. This can be with the ball on the end of a labret or one each end of a barbell.
2mm
3mm
4mm
5mm
6mm
7mm
8mm
9mm
10mm
11mm