Understanding Leather Thickness: A Comprehensive Guide

As a leather crafter and enthusiast, one of the most important things to understand is leather thickness. The thickness of the leather you choose will determine the look, feel, durability and suitability of your project, whether you’re making a wallet, belt, bag, or pair of shoes. 

In this guide, I’ll break down everything you need to know about leather thickness, including how it’s measured, what the different thicknesses are best for, and where to find the perfect leather for your needs.

How is Leather Thickness Measured?

Leather thickness is typically measured in ounces. However, this can be a bit confusing because it doesn’t refer to the weight of the leather, but rather how thick it is. One ounce of leather equals 1/64 inch in thickness. So an 8 oz of leather would be 1/8 inch thick.

Another common way to measure leather thickness, especially outside the US, is in millimeters. One millimeter equals 0.039 inches. So 1 oz leather would be about 0.4 mm thick.

It’s important to note that leather thickness can vary slightly across a hide. Leather is a natural material and not perfectly uniform. So you’ll often see leather thickness listed as a range, like 4-5 oz or 1.6-2.0 mm.

Leather Thickness Chart

Here is a general leather thickness chart that shows the different thicknesses in ounces and millimeters, along with common uses for each:

• 0-1 oz (0-0.4 mm) – Very thin, used for linings, bookmarks
• 2-3 oz (0.8-1.2 mm) – Thin, used for wallets, watch bands, light garments
• 4-5 oz (1.6-2.0 mm) – Medium weight, used for small leather goods, shoes, boots, jackets
• 6-7 oz (2.4-2.8 mm) – Heavy weight, used for belts, straps, saddlebags
• 8-9 oz (3.2-3.6 mm) – Very heavy, used for holsters, saddlery, heavy belts
• 10+ oz (4+ mm) – Super heavy, used for shoe soles, armor, very thick belts

Of course, this is just a general guide and different leather workers may categorize thicknesses slightly differently. But this gives you a good overview of the common leather thickness ranges and what they are typically used for.

Choosing the Right Leather Thickness

So how do you know which leather thickness to choose for your project? It really depends on the item you’re making and the properties you need the leather to have.

For small leather goods like wallets, watch bands, and lightweight garments, 2-3 oz is a good choice. This leather is thin and flexible but still durable enough to hold up to regular use.

For items that need a bit more structure and durability, like handbags, shoes, boots, and jackets, 4-5 oz is a versatile weight. It’s thick enough to hold its shape but not too bulky.

Belts, straps, knife sheaths, and other items that will take a lot of wear and tear do best with 6-7 oz leather. This heavy weight leather is very strong and will last a long time.

For items that require very thick, rigid leather, like saddles, holsters, and shoe soles, 8 oz and up is the way to go. This leather is so thick it can almost stand up on its own!

Leather Thickness at Andar

One company that understands the importance of leather thickness is Andar. They are a leather goods brand that specializes in high-quality wallets, bags, and accessories.

On their website, you can find a detailed leather thickness chart at Andar that breaks down the different thicknesses they use for their products. For their wallets, they use 2-3 oz full grain leather, which is the perfect weight for a slim profile that is still durable. Their leather bags use slightly thicker 4-5 oz leather to maintain their structure.

I appreciate that Andar is transparent about the leather thickness they use and why they choose it for each product. It shows they really know their craft and materials. The leather thickness chart at Andar is a great resource whether you’re buying one of their products or just want to learn more about leather thickness in general.

Other Factors to Consider

While thickness is certainly important, it’s not the only factor to consider when choosing leather. The type of leather (full grain vs top grain vs genuine), the tanning method, and the finish can also affect the leather’s appearance, feel, and performance.

Full grain leather is considered the highest quality. It comes from the top layer of the hide and has not been sanded or buffed to remove imperfections. This means it develops a beautiful patina over time. 

Top grain leather has had the very top layer sanded off and a finish applied, which makes it more stain and water resistant but a bit less durable. Genuine leather is a catch-all term for any leather that is not full or top grain, and is generally lower quality.

Vegetable tanned leather is tanned using natural tannins from bark and plants. It is environmentally friendly and develops a rich patina. Chrome tanned leather is tanned using chromium salts, which makes it softer and more pliable but less environmentally friendly. There are also other tanning methods like brain tanning and oil tanning that impart unique properties.

The finish on the leather can range from unfinished or raw, which will absorb moisture and stains easily but develop a lot of character, to fully finished with pigments and sealants that make it very uniform and water/stain resistant.

Conclusion

I hope this guide has helped demystify leather thickness and given you the knowledge you need to choose the perfect leather for your projects. Remember, thickness is just one piece of the puzzle. 

Consider the type of leather, tanning method, and finish as well to get the ideal combination of properties for your needs.

And if you’re in the market for some beautifully crafted, thoughtfully designed leather goods, definitely check out the leather thickness chart at Andar to see the range of options they offer. 

From thin, flexible wallets to sturdy, structured bags, they have something for everyone.