Leather Weight/Thickness Conversion Chart

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Leather Weight/Thickness Conversion Chart

How is the thickness of leather measured?

Leather thickness is typically measured in ounces in the USA. This unit of measurement of leather does not convey weight in the formal sense, but rather the thickness. Since it is crucial to have the correct thickness of leather for a particular project, it is also critical to know ounce measurements if you are purchasing from the USA.

So how thick is each ounce of leather?

One ounce of leather equals 0.4mm or 1/64 of an inch. Therefore 9 ounces is equal to 3.6mm or 9/64 of an inch and so on. Below is our leather thickness conversion chart for quick conversions. Please take into account, each piece of leather has a slightly variable thickness over the entire hide, our chart below reflects this variance.

Millimeter Thickness	Inch Thickness	Ounce Thickness	Example Leather
.8 – 1.2 mm	1/32" – 3/64"	2 – 3 oz	Classic Mustard Upholstery Leather
1.2 – 1.6 mm	3/64" – 1/16"	3 – 4 oz	Black Veg-tanned Craft Side
1.6 – 2.0 mm	1/16" – 5/64"	4 – 5 oz	"Crazy Horse" Oily Bag / Shoe Side
2.0 – 2.4 mm	5/64" – 3/32"	5 – 6 oz	Green Italian Veg-Tanned Double Shoulder
2.4 – 2.8 mm	3/32" – 7/64"	6 – 7 oz	Aus-nut American Seat Sides
2.8 – 3.2 mm	7/64" – 1/8"	7 – 8 oz	Natural Veg-tanned Double Shoulder
3.2 – 3.6 mm	1/8" – 9/64"	8 – 9 oz	Half Shoulder of Natural Veg-tan
3.6 – 4.0 mm	9/64"– 5/32"	9 – 10 oz	Red Italian Milled Double Shoulder
4.0 – 4.4 mm	5/32" – 11/64"	10 – 11 oz	English Black Rein Back
4.5 - 5.4mm	1/4" - 14/64"	12- 13 oz	Burgundy American Latigo Side
5.5 - 6.4mm	15/64" - 19/64"	14 - 15 oz	Dark Havana American Skirting Side
6.5 - 7.4mm	20/64" - 5/8"	16 - 17 oz	English Rock Oak Sole Bend

Want to know more about leather? We have workshops in our West Melbourne classroom almost every week!

So what thickness of leather do I need?

As mentioned above, it is vital you get the correct thickness of leather for each project. Our list here is a good guide to give you an idea of what thickness of leather you may need for different projects.

MM Thickness	Common Projects/Leather Types
.8 – 1.2mm	lining, embossing
1.2 – 1.6mm	lining, embossing, light bags, light wallets
1.6 – 2.0mm	wallets, bags, chaps
2.0 – 2.4mm	phone and tablet cases, book covers, light moccasins, chaps
2.4 – 2.8mm	heavy cases, covers, chaps, moccasins
2.8 – 3.2mm	moccasins, light sheaths, light holsters, belts
3.2 – 3.6mm	standard belts, standard sheaths, straps, medium holsters
3.6 – 4.0mm	bridle sides, bridle backs, heavy holsters, heavy belts, light armor, swell cover sides
4.0 – 4.4mm	bridle sides, bridle backs, heavy straps, medium armor, stirrup backs
4.5 – 5.4mm	girth point rumps, latigo sides, men's sole bends, saddlery skirting sides, rein backs
5.5 – 6.4mm	girth point rumps, harness sides, harness backs, heavy men's sole bends
6.5 – 7.4mm	super heavy men's sole bends, super heavy harness sides

Learn all about leather at our West Melbourne classroom; workshops most weeks.

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