Calculate aluminum weight
Alloy density reference
| Alloy | Density (g/cm³) | Density (lb/in³) | Typical use |
|---|---|---|---|
| 6061 | 2.70 | 0.0975 | Structural, extrusions, general fabrication |
| 5052 | 2.68 | 0.0968 | Marine, sheet metal, fuel tanks |
| 7075 | 2.81 | 0.1015 | Aerospace, high-strength parts |
| 1100 | 2.71 | 0.0979 | General purpose, food/chemical equipment |
Formulas used
| Shape | Cross-section / volume formula |
|---|---|
| Sheet / plate | V = L × W × t |
| Round bar | V = π × d² / 4 × L |
| Square bar | V = s² × L |
| Tube | V = π/4 × (OD² − ID²) × L |
| Angle | A = t × (leg A + leg B − t), V = A × L |
| Channel | A = h×tw + 2×(b − tw)×tf, V = A × L |
| Hex bar | A = (√3/2) × (across-flats)², V = A × L |
Weight = volume × density (2.70 g/cm³ for 6061).
Worked examples
6,000 × 2.70 = 16,200 g = 16.20 kg (35.71 lb).
18,877.9 × 2.68 = 50,592.8 g = 50.59 kg (111.54 lb).
617.8 × 2.70 = 1,668 g = 1.67 kg (3.68 lb) per foot.
4,222.3 × 2.70 = 11,400.2 g = 11.40 kg (25.13 lb).
282.7 × 2.81 = 794.3 g = 0.79 kg (1.75 lb).
1,558.8 × 2.70 = 4,208.9 g = 4.21 kg (9.28 lb).
7,824 × 2.70 = 21,124.8 g = 21.12 kg (46.57 lb).
1,875 × 2.71 = 5,081.2 g = 5.08 kg (11.20 lb).
Frequently asked questions
How do you calculate the weight of aluminum?
Multiply volume by density: weight = volume × density. For 6061 aluminum the density is 2.70 g/cm³, so a 6,000 cm³ sheet weighs 6,000 × 2.70 = 16,200 g, i.e. 16.20 kg (35.71 lb). Pick a shape above, enter its dimensions and alloy, and the calculator does the geometry for you.
How much does a 6061 aluminum sheet 1 m × 2 m × 3 mm weigh?
16.20 kg (35.71 lb). Volume = 100 cm × 200 cm × 0.3 cm = 6,000 cm³; 6,000 × 2.70 g/cm³ = 16,200 g.
What does a 4×8 ft, 1/4-inch 5052 aluminum sheet weigh?
50.59 kg (111.54 lb) — volume 18,877.9 cm³ at 2.68 g/cm³.
How much does a 2-inch 6061 round bar weigh per foot?
3.68 lb per foot (1.67 kg per 12 inches) of 6061.
How do you calculate aluminum tube weight from OD, ID and length?
Subtract the hollow core: V = π/4 × (OD² − ID²) × L. A 6 m length of 60 mm OD × 52 mm ID 6061 tube weighs 11.40 kg (25.13 lb).
How much does aluminum angle weigh?
Cross-section area = t × (leg A + leg B − t), then × length. One foot of 3×3×1/4 in 7075 angle weighs 1.75 lb (0.79 kg).
How much does aluminum hex bar weigh?
Area = (√3/2) × (across-flats)². A 2 m length of 30 mm hex 6061 bar weighs 4.21 kg (9.28 lb).
How much does aluminum channel weigh?
A 6 m length of 100×50 mm 6061 channel (6 mm web, 8 mm flanges) weighs 21.12 kg (46.57 lb).
How much does 25 mm 1100 square bar weigh per 3 meters?
5.08 kg (11.20 lb) for a 3 m length of 1100 alloy.
What are the densities of common aluminum alloys?
6061: 2.70 g/cm³ (0.0975 lb/in³); 5052: 2.68 g/cm³ (0.0968 lb/in³); 7075: 2.81 g/cm³ (0.1015 lb/in³); 1100: 2.71 g/cm³ (0.0979 lb/in³). Enter any custom value if your mill certificate differs.
Is this the same as a weight unit converter?
No. This tool computes aluminum weight from physical dimensions and alloy density. A weight converter only converts between units (kg to lb, etc.) — it cannot tell you how much a sheet or bar weighs.
How do I calculate the weight of multiple pieces?
Enter the quantity and the calculator multiplies the per-piece weight: 10 sheets of 1 m × 2 m × 3 mm 6061 weigh 162.00 kg (357.15 lb) in total.
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