This angle iron sizes chart lists all 137 hot-rolled steel angles (L shapes) in the AISC Shapes Database v16.0: 61 equal leg angles and 76 unequal leg angles, from L2x2x1/8 to L12x12x1-3/8. Each row gives the leg thickness, weight per foot, area and section properties, in inches or millimeters.
How to Read an Angle Size
A size such as L4x3x1/4 lists the two leg lengths and the thickness, all in inches: a 4 in leg, a 3 in leg and a 1/4 in thickness. When both legs are the same (L4x4x1/4) it is an equal leg angle. “Angle iron” is the everyday name, but structural angles today are hot-rolled steel, usually ASTM A36 or A572 Grade 50.
Equal Leg Angle Sizes
| Size | Thickness (in) | Weight (lb/ft) | Area (in²) | Ix (in⁴) | Iy (in⁴) | rz (in) |
|---|---|---|---|---|---|---|
| L2x2x1/8 | 0.125 | 1.65 | 0.491 | 0.189 | 0.189 | 0.391 |
| L2x2x3/16 | 0.188 | 2.44 | 0.722 | 0.271 | 0.271 | 0.389 |
| L2x2x1/4 | 0.25 | 3.19 | 0.944 | 0.346 | 0.346 | 0.387 |
| L2x2x5/16 | 0.313 | 3.92 | 1.16 | 0.414 | 0.414 | 0.386 |
| L2x2x3/8 | 0.375 | 4.7 | 1.37 | 0.476 | 0.476 | 0.386 |
| L2-1/2×2-1/2×3/16 | 0.188 | 3.07 | 0.901 | 0.535 | 0.535 | 0.482 |
| L2-1/2×2-1/2×1/4 | 0.25 | 4.1 | 1.19 | 0.692 | 0.692 | 0.482 |
| L2-1/2×2-1/2×5/16 | 0.313 | 5 | 1.46 | 0.837 | 0.837 | 0.481 |
| L2-1/2×2-1/2×3/8 | 0.375 | 5.9 | 1.73 | 0.972 | 0.972 | 0.481 |
| L2-1/2×2-1/2×1/2 | 0.5 | 7.7 | 2.26 | 1.22 | 1.22 | 0.481 |
| L3x3x3/16 | 0.188 | 3.71 | 1.09 | 0.948 | 0.948 | 0.586 |
| L3x3x1/4 | 0.25 | 4.9 | 1.44 | 1.23 | 1.23 | 0.585 |
| L3x3x5/16 | 0.313 | 6.1 | 1.78 | 1.5 | 1.5 | 0.583 |
| L3x3x3/8 | 0.375 | 7.2 | 2.11 | 1.75 | 1.75 | 0.581 |
| L3x3x7/16 | 0.438 | 8.3 | 2.43 | 1.98 | 1.98 | 0.58 |
| L3x3x1/2 | 0.5 | 9.4 | 2.76 | 2.2 | 2.2 | 0.58 |
| L3-1/2×3-1/2×1/4 | 0.25 | 5.8 | 1.7 | 2 | 2 | 0.688 |
| L3-1/2×3-1/2×5/16 | 0.313 | 7.2 | 2.1 | 2.44 | 2.44 | 0.685 |
| L3-1/2×3-1/2×3/8 | 0.375 | 8.5 | 2.5 | 2.86 | 2.86 | 0.683 |
| L3-1/2×3-1/2×7/16 | 0.438 | 9.8 | 2.89 | 3.25 | 3.25 | 0.681 |
| L3-1/2×3-1/2×1/2 | 0.5 | 11.1 | 3.25 | 3.63 | 3.63 | 0.679 |
| L4x4x1/4 | 0.25 | 6.6 | 1.93 | 3 | 3 | 0.783 |
| L4x4x5/16 | 0.313 | 8.2 | 2.4 | 3.67 | 3.67 | 0.781 |
| L4x4x3/8 | 0.375 | 9.8 | 2.86 | 4.32 | 4.32 | 0.779 |
| L4x4x7/16 | 0.438 | 11.3 | 3.3 | 4.93 | 4.93 | 0.777 |
| L4x4x1/2 | 0.5 | 12.8 | 3.75 | 5.52 | 5.52 | 0.776 |
| L4x4x5/8 | 0.625 | 15.7 | 4.61 | 6.62 | 6.62 | 0.774 |
| L4x4x3/4 | 0.75 | 18.5 | 5.44 | 7.62 | 7.62 | 0.774 |
| L5x5x5/16 | 0.313 | 10.3 | 3.07 | 7.44 | 7.44 | 0.99 |
| L5x5x3/8 | 0.375 | 12.3 | 3.65 | 8.76 | 8.76 | 0.986 |
| L5x5x7/16 | 0.438 | 14.3 | 4.22 | 10 | 10 | 0.983 |
| L5x5x1/2 | 0.5 | 16.2 | 4.79 | 11.3 | 11.3 | 0.98 |
| L5x5x5/8 | 0.625 | 20 | 5.9 | 13.6 | 13.6 | 0.975 |
| L5x5x3/4 | 0.75 | 23.6 | 6.98 | 15.7 | 15.7 | 0.972 |
| L5x5x7/8 | 0.875 | 27.2 | 8 | 17.8 | 17.8 | 0.971 |
| L6x6x5/16 | 0.313 | 12.4 | 3.67 | 13 | 13 | 1.19 |
| L6x6x3/8 | 0.375 | 14.9 | 4.38 | 15.4 | 15.4 | 1.19 |
| L6x6x7/16 | 0.438 | 17.2 | 5.08 | 17.6 | 17.6 | 1.18 |
| L6x6x1/2 | 0.5 | 19.6 | 5.77 | 19.9 | 19.9 | 1.18 |
| L6x6x9/16 | 0.563 | 21.9 | 6.45 | 22 | 22 | 1.18 |
| L6x6x5/8 | 0.625 | 24.2 | 7.13 | 24.1 | 24.1 | 1.17 |
| L6x6x3/4 | 0.75 | 28.7 | 8.46 | 28.1 | 28.1 | 1.17 |
| L6x6x7/8 | 0.875 | 33.1 | 9.75 | 31.9 | 31.9 | 1.17 |
| L6x6x1 | 1 | 37.4 | 11 | 35.4 | 35.4 | 1.17 |
| L8x8x1/2 | 0.5 | 26.4 | 7.84 | 48.8 | 48.8 | 1.59 |
| L8x8x9/16 | 0.563 | 29.6 | 8.77 | 54.2 | 54.2 | 1.58 |
| L8x8x5/8 | 0.625 | 32.7 | 9.69 | 59.6 | 59.6 | 1.58 |
| L8x8x3/4 | 0.75 | 38.9 | 11.5 | 69.9 | 69.9 | 1.57 |
| L8x8x7/8 | 0.875 | 45 | 13.3 | 79.7 | 79.7 | 1.57 |
| L8x8x1 | 1 | 51 | 15.1 | 89.1 | 89.1 | 1.56 |
| L8x8x1-1/8 | 1.13 | 56.9 | 16.8 | 98.1 | 98.1 | 1.56 |
| L10x10x3/4 | 0.75 | 49.1 | 14.5 | 139 | 139 | 1.96 |
| L10x10x7/8 | 0.875 | 56.9 | 16.8 | 158 | 158 | 1.93 |
| L10x10x1 | 1 | 64.7 | 19 | 177 | 177 | 1.92 |
| L10x10x1-1/8 | 1.13 | 72.3 | 21.3 | 196 | 196 | 1.92 |
| L10x10x1-1/4 | 1.25 | 79.9 | 23.4 | 213 | 213 | 1.91 |
| L10x10x1-3/8 | 1.38 | 87.1 | 25.6 | 231 | 231 | 1.91 |
| L12x12x1 | 1 | 77.8 | 23 | 315 | 315 | 2.34 |
| L12x12x1-1/8 | 1.13 | 87.2 | 25.8 | 350 | 350 | 2.33 |
| L12x12x1-1/4 | 1.25 | 96.4 | 28.4 | 381 | 381 | 2.31 |
| L12x12x1-3/8 | 1.38 | 105 | 31.1 | 413 | 413 | 2.3 |
Unequal Leg Angle Sizes
For unequal leg angles, Ix is about the axis parallel to the short leg and Iy is about the axis parallel to the long leg. rz is the smallest radius of gyration, which governs a single angle used as a strut.
| Size | Thickness (in) | Weight (lb/ft) | Area (in²) | Ix (in⁴) | Iy (in⁴) | rz (in) |
|---|---|---|---|---|---|---|
| L2-1/2×1-1/2×3/16 | 0.188 | 2.44 | 0.724 | 0.464 | 0.126 | 0.324 |
| L2-1/2×1-1/2×1/4 | 0.25 | 3.19 | 0.947 | 0.594 | 0.16 | 0.321 |
| L2-1/2x2x3/16 | 0.188 | 2.75 | 0.818 | 0.511 | 0.292 | 0.426 |
| L2-1/2x2x1/4 | 0.25 | 3.62 | 1.07 | 0.656 | 0.372 | 0.423 |
| L2-1/2x2x5/16 | 0.313 | 4.5 | 1.32 | 0.79 | 0.446 | 0.42 |
| L2-1/2x2x3/8 | 0.375 | 5.3 | 1.55 | 0.914 | 0.513 | 0.419 |
| L3x2x3/16 | 0.188 | 3.07 | 0.917 | 0.847 | 0.305 | 0.435 |
| L3x2x1/4 | 0.25 | 4.1 | 1.2 | 1.09 | 0.39 | 0.431 |
| L3x2x5/16 | 0.313 | 5 | 1.48 | 1.32 | 0.467 | 0.428 |
| L3x2x3/8 | 0.375 | 5.9 | 1.75 | 1.54 | 0.539 | 0.426 |
| L3x2x1/2 | 0.5 | 7.7 | 2.26 | 1.92 | 0.667 | 0.425 |
| L3x2-1/2×3/16 | 0.188 | 3.39 | 1 | 0.899 | 0.568 | 0.521 |
| L3x2-1/2×1/4 | 0.25 | 4.5 | 1.32 | 1.16 | 0.734 | 0.52 |
| L3x2-1/2×5/16 | 0.313 | 5.6 | 1.63 | 1.41 | 0.888 | 0.518 |
| L3x2-1/2×3/8 | 0.375 | 6.6 | 1.93 | 1.65 | 1.03 | 0.517 |
| L3x2-1/2×7/16 | 0.438 | 7.6 | 2.22 | 1.87 | 1.17 | 0.516 |
| L3x2-1/2×1/2 | 0.5 | 8.5 | 2.5 | 2.07 | 1.29 | 0.516 |
| L3-1/2×2-1/2×1/4 | 0.25 | 4.9 | 1.45 | 1.81 | 0.775 | 0.541 |
| L3-1/2×2-1/2×5/16 | 0.313 | 6.1 | 1.79 | 2.2 | 0.937 | 0.538 |
| L3-1/2×2-1/2×3/8 | 0.375 | 7.2 | 2.12 | 2.56 | 1.09 | 0.535 |
| L3-1/2×2-1/2×1/2 | 0.5 | 9.4 | 2.77 | 3.24 | 1.36 | 0.532 |
| L3-1/2x3x1/4 | 0.25 | 5.4 | 1.58 | 1.92 | 1.3 | 0.628 |
| L3-1/2x3x5/16 | 0.313 | 6.6 | 1.95 | 2.33 | 1.58 | 0.624 |
| L3-1/2x3x3/8 | 0.375 | 7.9 | 2.32 | 2.73 | 1.84 | 0.622 |
| L3-1/2x3x7/16 | 0.438 | 9.1 | 2.67 | 3.1 | 2.09 | 0.62 |
| L3-1/2x3x1/2 | 0.5 | 10.2 | 3.02 | 3.45 | 2.32 | 0.618 |
| L4x3x1/4 | 0.25 | 5.8 | 1.69 | 2.75 | 1.33 | 0.639 |
| L4x3x5/16 | 0.313 | 7.2 | 2.09 | 3.36 | 1.62 | 0.638 |
| L4x3x3/8 | 0.375 | 8.5 | 2.49 | 3.94 | 1.89 | 0.636 |
| L4x3x1/2 | 0.5 | 11.1 | 3.25 | 5.02 | 2.4 | 0.633 |
| L4x3x5/8 | 0.625 | 13.6 | 3.99 | 6.01 | 2.85 | 0.631 |
| L4x3-1/2×1/4 | 0.25 | 6.2 | 1.82 | 2.89 | 2.07 | 0.723 |
| L4x3-1/2×5/16 | 0.313 | 7.7 | 2.25 | 3.53 | 2.52 | 0.721 |
| L4x3-1/2×3/8 | 0.375 | 9.1 | 2.68 | 4.15 | 2.96 | 0.719 |
| L4x3-1/2×1/2 | 0.5 | 11.9 | 3.5 | 5.3 | 3.76 | 0.716 |
| L5x3x1/4 | 0.25 | 6.6 | 1.94 | 5.09 | 1.41 | 0.652 |
| L5x3x5/16 | 0.313 | 8.2 | 2.41 | 6.24 | 1.72 | 0.649 |
| L5x3x3/8 | 0.375 | 9.8 | 2.86 | 7.35 | 2.01 | 0.646 |
| L5x3x7/16 | 0.438 | 11.3 | 3.31 | 8.41 | 2.29 | 0.644 |
| L5x3x1/2 | 0.5 | 12.8 | 3.75 | 9.43 | 2.55 | 0.642 |
| L5x3-1/2×1/4 | 0.25 | 7 | 2.07 | 5.36 | 2.2 | 0.761 |
| L5x3-1/2×5/16 | 0.313 | 8.7 | 2.56 | 6.58 | 2.69 | 0.758 |
| L5x3-1/2×3/8 | 0.375 | 10.4 | 3.05 | 7.75 | 3.15 | 0.755 |
| L5x3-1/2×1/2 | 0.5 | 13.6 | 4 | 10 | 4.02 | 0.75 |
| L5x3-1/2×5/8 | 0.625 | 16.8 | 4.93 | 12 | 4.8 | 0.746 |
| L5x3-1/2×3/4 | 0.75 | 19.8 | 5.85 | 13.9 | 5.52 | 0.744 |
| L6x3-1/2×5/16 | 0.313 | 9.8 | 2.89 | 10.9 | 2.84 | 0.767 |
| L6x3-1/2×3/8 | 0.375 | 11.7 | 3.44 | 12.9 | 3.33 | 0.763 |
| L6x3-1/2×1/2 | 0.5 | 15.3 | 4.5 | 16.6 | 4.24 | 0.756 |
| L6x4x5/16 | 0.313 | 10.3 | 3.03 | 11.4 | 4.13 | 0.874 |
| L6x4x3/8 | 0.375 | 12.3 | 3.61 | 13.4 | 4.86 | 0.87 |
| L6x4x7/16 | 0.438 | 14.3 | 4.18 | 15.4 | 5.56 | 0.867 |
| L6x4x1/2 | 0.5 | 16.2 | 4.75 | 17.3 | 6.22 | 0.864 |
| L6x4x9/16 | 0.563 | 18.1 | 5.31 | 19.2 | 6.86 | 0.861 |
| L6x4x5/8 | 0.625 | 20 | 5.86 | 21 | 7.48 | 0.859 |
| L6x4x3/4 | 0.75 | 23.6 | 6.94 | 24.5 | 8.63 | 0.856 |
| L6x4x7/8 | 0.875 | 27.2 | 8 | 27.7 | 9.7 | 0.854 |
| L7x4x3/8 | 0.375 | 13.6 | 4 | 20.5 | 5.06 | 0.873 |
| L7x4x7/16 | 0.438 | 15.7 | 4.63 | 23.6 | 5.79 | 0.869 |
| L7x4x1/2 | 0.5 | 17.9 | 5.26 | 26.6 | 6.48 | 0.866 |
| L7x4x5/8 | 0.625 | 22.1 | 6.5 | 32.4 | 7.79 | 0.86 |
| L7x4x3/4 | 0.75 | 26.2 | 7.74 | 37.8 | 9 | 0.855 |
| L8x4x7/16 | 0.438 | 17.2 | 5.11 | 34.2 | 6.03 | 0.867 |
| L8x4x1/2 | 0.5 | 19.6 | 5.8 | 38.6 | 6.75 | 0.863 |
| L8x4x9/16 | 0.563 | 21.9 | 6.49 | 42.9 | 7.44 | 0.859 |
| L8x4x5/8 | 0.625 | 24.2 | 7.16 | 47 | 8.11 | 0.856 |
| L8x4x3/4 | 0.75 | 28.7 | 8.49 | 55 | 9.37 | 0.85 |
| L8x4x7/8 | 0.875 | 33.1 | 9.79 | 62.6 | 10.5 | 0.846 |
| L8x4x1 | 1 | 37.4 | 11.1 | 69.7 | 11.6 | 0.844 |
| L8x6x7/16 | 0.438 | 20.2 | 5.99 | 39.3 | 19.3 | 1.31 |
| L8x6x1/2 | 0.5 | 23 | 6.8 | 44.4 | 21.7 | 1.3 |
| L8x6x9/16 | 0.563 | 25.7 | 7.61 | 49.4 | 24.1 | 1.3 |
| L8x6x5/8 | 0.625 | 28.5 | 8.41 | 54.2 | 26.4 | 1.29 |
| L8x6x3/4 | 0.75 | 33.8 | 9.99 | 63.5 | 30.8 | 1.29 |
| L8x6x7/8 | 0.875 | 39.1 | 11.5 | 72.4 | 34.9 | 1.28 |
| L8x6x1 | 1 | 44.2 | 13.1 | 80.9 | 38.8 | 1.28 |
Common Angle Iron Sizes
The smallest AISC angles are the 2 in sizes. For framing, brackets, shelf supports and lintels, the most common are L2x2x1/4, L3x3x1/4, L4x4x1/4, L4x4x3/8 and L6x4x3/8. Bar-size angles under 2 in, such as 1x1x1/8 or 1-1/2×1-1/2×3/16, are not in the AISC database; use the formula in the angle iron weight calculator to get their weight.
Angle Iron Sizes FAQ
How much does angle iron weigh per foot?
It depends on the legs and thickness. L2x2x1/4 weighs 3.19 lb/ft, L3x3x1/4 weighs 4.9 lb/ft and L4x4x1/4 weighs 6.6 lb/ft. The charts above list every AISC size, and the weight calculator works out any length.
What is the difference between angle iron and steel angle?
None in practice. The name comes from the days of wrought iron. Structural angles sold today are steel.
What is the thickest angle iron size?
AISC lists angles up to 1-3/8 in thick, in the 10 in and 12 in leg sizes. The heaviest is L12x12x1-3/8 at 105 lb/ft.
How much load can an angle carry?
That depends on span, loading, connections, bracing and the building code, so it cannot be read from a size chart. A licensed structural engineer must size any angle that carries a load.
Source: AISC Shapes Database v16.0, consistent with the AISC Steel Construction Manual, 16th Edition. Last updated: September 2026. Reference information only, not engineering advice. Disclaimer.