Leather Thickness Converter
Convert leather thickness between ounces, millimetres, inches and gauge, and check what the leather suits.
At a glance
- What you enter
- You have the thickness in, Thickness value, Weight per square foot for an ounce figure
- What you get
- Thickness in ounces, Thickness in millimetres, Thickness in inches, Thickness in sixtyfourths of an inch, Gauge equivalent, Lower end of the practical range, Upper end of the practical range, Weight band, Suits wallets and small goods, Suits belts and bags, Suits heavy straps and harness, Suits soles, Stiffness against a 1.6 mm leather, Layers to reach four millimetres, Thickness of a three layer seam
- Formula shown
- Yes, every step, right below your results.
- Cost and privacy
- Free, no account needed, and nothing you type is stored.
See worked examples ↓ Read the FAQ ↓ Share this calculator ↓
Results are estimates for general information only, always verify with a professional or official source before acting on them.
How to use the Leather Thickness Converter
- 1 Enter You have the thickness in
- 2 Enter Thickness value, The number from the supplier listing or the splitter manual.
- 3 Enter Weight per square foot for an ounce figure (oz), Only used to check the ounce rating against a measured thickness. A 4 ounce leather should weigh about 4 ounces per square foot.
- 4 Press Calculate. You get Thickness in ounces, Thickness in millimetres, Thickness in inches, Thickness in sixtyfourths of an inch, Gauge equivalent, Lower end of the practical range, Upper end of the practical range, Weight band, Suits wallets and small goods, Suits belts and bags, Suits heavy straps and harness, Suits soles, Stiffness against a 1.6 mm leather, Layers to reach four millimetres, Thickness of a three layer seam, and every intermediate step stays visible under "How is this calculated?"
- 5 Change one number at a time to see what moves the result, that is usually the most useful thing a calculator can tell you.
Worked examples
Real numbers run through this calculator. Open any example to load it into the form above and change it.
Four ounce belt leather
A supplier in the United States quoting the belt weight in ounces.
You enter
- You have the thickness in
- 1
- Thickness value
- 4
- Weight per square foot for an ounce figure
- 4 oz
You get
- Thickness in ounces
- 4.00 oz
- Thickness in millimetres
- 1.60 mm
- Thickness in inches
- 0.06 in
- Thickness in sixtyfourths of an inch
- 4.03
- Gauge equivalent
- 16.00
- Lower end of the practical range
- 1.44 mm
- Upper end of the practical range
- 1.76 mm
- Weight band
- 2
- Suits wallets and small goods
- 1
- Suits belts and bags
- 1
- Suits heavy straps and harness
- 0
- Suits soles
- 0
- Stiffness against a 1.6 mm leather
- 1.00
- Layers to reach four millimetres
- 2.50
- Thickness of a three layer seam
- 4.80 mm
About 1.6 millimetres, 0.063 inches, and comfortably in the belt and bag band.
A European listing in millimetres
A wallet leather quoted as 1.2 millimetres.
You enter
- You have the thickness in
- 2
- Thickness value
- 1.20
- Weight per square foot for an ounce figure
- 3 oz
You get
- Thickness in ounces
- 3.00 oz
- Thickness in millimetres
- 1.20 mm
- Thickness in inches
- 0.05 in
- Thickness in sixtyfourths of an inch
- 3.02
- Gauge equivalent
- 12.00
- Lower end of the practical range
- 1.08 mm
- Upper end of the practical range
- 1.32 mm
- Weight band
- 2
- Suits wallets and small goods
- 1
- Suits belts and bags
- 0
- Suits heavy straps and harness
- 0
- Suits soles
- 0
- Stiffness against a 1.6 mm leather
- 0.42
- Layers to reach four millimetres
- 3.33
- Thickness of a three layer seam
- 3.60 mm
Three ounces, which is exactly the wallet lining and card slot weight.
A harness supplier quoting sixtyfourths
A bridle strap described as 10/64 inch.
You enter
- You have the thickness in
- 3
- Thickness value
- 0.16
- Weight per square foot for an ounce figure
- 10 oz
You get
- Thickness in ounces
- 9.91 oz
- Thickness in millimetres
- 3.96 mm
- Thickness in inches
- 0.16 in
- Thickness in sixtyfourths of an inch
- 9.98
- Gauge equivalent
- 39.62
- Lower end of the practical range
- 3.57 mm
- Upper end of the practical range
- 4.36 mm
- Weight band
- 5
- Suits wallets and small goods
- 0
- Suits belts and bags
- 0
- Suits heavy straps and harness
- 1
- Suits soles
- 1
- Stiffness against a 1.6 mm leather
- 15.19
- Layers to reach four millimetres
- 1.01
- Thickness of a three layer seam
- 11.89 mm
About 3.96 millimetres, or 10 ounces, which is sole and harness weight rather than a belt.
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