22 gauge steel thickness calculator
In the Manufacturers Standard Gauge for steel, 22 gauge is 0.0299 in (0.759 mm). The gauge number counts down as the sheet gets thicker.
Where the neutral axis sits, as a fraction of thickness. 0.33 for tight bends, 0.5 for generous ones.
- Thickness in inches
- 0.029 90
- Weight of the sheet
- 11.924
- Weight per square metre
- 5.962 kg/m2
- Weight per square foot
- 0.5539 kg/ft2
- Minimum inside bend radius One thickness is a safe general rule for mild steel; check the alloy.
- 0.759
- Bend allowance
- 1.694
- Bend deduction
- 1.344
- Suggested V-die opening Eight times thickness is the usual air-bending starting point.
- 6.08
Show the working
- Sheet length = 2000
- Sheet width = 1000
- Steel density = 7850
- Bend angle = 90
- K-factor = 0.42
- Thickness = 0.7594599999999999 = 0.759 46
- Thickness in inches = 0.759 46 / 25.4 = 0.0299
- area_m2 = 2000 * 1000 / 1e6 = 2
- volume_m3 = 2 * 0.759 46 / 1000 = 0.001 518 92
- Weight of the sheet = 0.001 518 92 * 7850 = 11.9235
- Weight per square metre = 0.759 46 / 1000 * 7850 = 5.961 76
- Weight per square foot = 5.961 76 * 0.09290304 = 0.553 866
- Minimum inside bend radius = 0.759 46 * 1 = 0.759 46
- Bend allowance = rad(90) * (0.759 46 + 0.42 * 0.759 46) = 1.694
- Bend deduction = 2 * (0.759 46 + 0.759 46) * tan(rad(90)/2) - 1.694 = 1.343 84
- Suggested V-die opening = 0.759 46 * 8 = 6.075 68
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- weight = length x width x thickness x density
- bend allowance = angle in radians x (inside radius + K x thickness)
- bend deduction = 2 x (inside radius + thickness) x tan(angle/2) - bend allowance
Gauge numbers are not a single standard. Steel, aluminium, stainless and zinc all use different gauge tables for the same number, so always state the material.
The Manufacturers Standard Gauge descends from a weight-per-square-foot table, which is why the thicknesses are not a neat progression.
Frequently asked
How thick is 22 gauge steel?
0.0299 inches, or 0.759 mm, for uncoated sheet steel.
Is a higher gauge number thicker?
No. The gauge number counts down as thickness goes up, so 16 gauge is thicker than 20 gauge.
Where the numbers come from
- Thicknesses are the Manufacturers Standard Gauge for uncoated hot- and cold-rolled sheet steel.