Placement		Gauge	Post Length
	Navel	14g (Standard) Can also shrink in width to a size 16g if piercing left to partially close and standard sizes don't fit.	10mm (Standard) Can also vary from 6mm up to 19mm depending on piercing age and accuracy. Body weight is not usually a factor for piercing measurements.
	Nipple	14g (Standard)	16mm (Standard) Can also vary from 6mm up to 19mm
	Nostril	18g, 20g	6mm - 8mm Hoops 6mm - Studs / L-Bends
	Septum	14g, 16g	8mm - 10mm
	Helix	18g, 19g, 20g	6mm - 8mm
	Conch	16g, 18g	12mm - 16mm Hoops 10 - 14mm Studs
	Rook	16g	6mm Snug/comfortable Can also vary from 5mm up to 8mm
	Daith	16g	8mm Can also vary up to 10mm
	Tragus	16g	6mm Can also vary from 5mm up to 8mm
	Industrial	14g	35mm Can also vary from 25mm up to 38mm
	Dermal	14g	Frontals vary between 4mm - 8mm
	Eyebrow	16g	8mm

 

How to establish your preferred length for body jewellery.

The listed length (inches" or millimetres as shown above) refers to the distance between the balls. It is the length of the piercing shaft in fractional inches/millimeters and not the length of the full body jewellery.

If you are unsure what size you are, measure a piece of body jewellery that currently fits you correctly and this will assist you in establishing the best size moving forward. You may need to adjust your preferred sizing up or down depending on whether or not the current fit is as snug as you would like or perhaps too tight.

Length Conversion (eg. 3/8" 10mm) 

Millimeters	Fractional Inches
6mm	1/4"
8mm (short length)	5/16"
10mm (standard sizes)	3/8"
11mm (standard sizes)	7/16"
12mm	1/2"
14mm	9/16"
16mm	5/8"
19mm	3/4"
22mm	7/8"
25mm	1"

Gauge - width of the shaft (eg. 14g)

Body jewellery is measured by gauges. The higher the gauge the skinnier the piercing post becomes. For example a 12g post is far thicker than a 19g post.

 

Refer to the chart below for specific details.

Gauge	Millimeter	Inches
20g (standard septum)	0.81mm	1/32"
18g (standard septum)	1mm	3/64"
16g (standard septum)	1.2mm	3/64"
14g (standard navel)	1.6mm	1/16"
12g	2mm	5/64"
10g	2.4mm	3/32"
8g	3.2mm	1/8"
6g	4mm	5/32"
4g	5mm	3/16"
2g	6mm	1/4"
0g	8mm	5/16"
00g	9.5mm	3/8"

Ball Size Conversion Chart

Body jewellery balls are sold by the millimeter, and the threading (screw) needs to match the piercing posts gauge.

Millimeters	Fractional Inches
3	1/8
4	5/32
5	3/16
6	1/4
8	5/16
10	3/8