Aluminum circles per ton: calculator and chart
Circles are used by the piece but quoted by the ton. Enter diameter, thickness, alloy and your order, and get the weight of each circle and how many circles make a metric ton and your order. A 12 in circle at 0.040 in weighs about 0.44 lb (0.20 kg): about 4,980 circles per metric ton at 2.71 g/cm³.
How it is calculated
Circle weight = π/4 × diameter² × thickness × density. In pounds, with inches: 0.7854 × diameter² × thickness × 0.0979 lb/in³ (2.71 g/cm³). Circles per metric ton = 2,204.6 lb ÷ weight of one circle. A 12 in circle at 0.040 in in 1100 weighs 0.7854 × 12² × 0.040 × 0.0979 = 0.44 lb (0.20 kg): about 4,980 circles per metric ton.
The calculation is for the finished circle. It does not include the skeleton left after blanking circles from sheet or coil, which depends on how the circles are nested and on the strip width. Actual weight varies with thickness tolerance.
How many aluminum circles are in a ton?
It depends on diameter and thickness: about 11,200 circles of 8 in at 0.040 in, 4,980 of 12 in at 0.040 in or 1,140 of 20 in at 0.063 in per metric ton, at 2.71 g/cm³. Double the diameter and each circle weighs four times as much, so four times fewer fit in a ton.
| Diameter | 0.032 in (0.81 mm) | 0.040 in (1.02 mm) | 0.063 in (1.60 mm) | 0.080 in (2.03 mm) | 0.125 in (3.17 mm) | 0.157 in (3.99 mm) |
|---|---|---|---|---|---|---|
| 6 in (152 mm) | 24,890 | 19,910 | 12,640 | 9,960 | 6,370 | 5,070 |
| 8 in (203 mm) | 14,000 | 11,200 | 7,110 | 5,600 | 3,580 | 2,850 |
| 10 in (254 mm) | 8,960 | 7,170 | 4,550 | 3,580 | 2,290 | 1,830 |
| 12 in (305 mm) | 6,220 | 4,980 | 3,160 | 2,490 | 1,590 | 1,270 |
| 14 in (356 mm) | 4,570 | 3,660 | 2,320 | 1,830 | 1,170 | 930 |
| 16 in (406 mm) | 3,500 | 2,800 | 1,780 | 1,400 | 900 | 710 |
| 18 in (457 mm) | 2,770 | 2,210 | 1,400 | 1,110 | 710 | 560 |
| 20 in (508 mm) | 2,240 | 1,790 | 1,140 | 900 | 570 | 460 |
| 24 in (610 mm) | 1,560 | 1,240 | 790 | 620 | 400 | 320 |
| 28 in (711 mm) | 1,140 | 910 | 580 | 460 | 290 | 230 |
| 32 in (813 mm) | 870 | 700 | 440 | 350 | 220 | 180 |
| 36 in (914 mm) | 690 | 550 | 350 | 280 | 180 | 140 |
| 40 in (1,016 mm) | 560 | 450 | 280 | 220 | 140 | 110 |
| 48 in (1,219 mm) | 390 | 310 | 200 | 160 | 100 | 80 |
In 5000 series the maximum diameter is 36 in, so the 40 and 48 in rows apply to 1000 and 3000 series. For the exact count at your size and alloy, use the calculator.
Circle sizes Almexa makes
Per its September 2026 technical sheet, Almexa blanks circles from its own coil, 0.0220 to 0.1575 in (0.56 to 4.0 mm) thick and 5.51 to 48 in (140 to 1,219 mm) in diameter in 1000 and 3000 series, up to 36 in (914 mm) in 5000 series. For deep drawing and spinning, 1050 or 1100 in O temper; for parts that need more stiffness, 3004 or 3105. They usually ship in mill finish; non-stick or paint on request.
Related tools and guides
- Aluminum circles alloys, tempers and finishes
- Aluminum Circles for Spinning: Which Alloy, Temper and Blank Size to Order
- Which aluminum alloy to use for deep drawing pots and pans
- Aluminum gauge converter if your thickness comes in gauge
- Aluminum sheet weight calculator pounds per sheet and sheets per ton
- Quote aluminum circles the form already has the product
Sources
- The Aluminum Association: International Alloy Designations and Chemical Composition Limits (August 2018 revision) density of 1100, 3003, 3105 and 5052
Manufacturing sizes: Almexa technical sheet, September 2026. Unit conversions: 1 in = 25.4 mm; 1 kg = 2.2046 lb; 1 short ton = 2,000 lb.
Frequently asked questions
How much does an aluminum circle weigh?
A 12 in circle at 0.040 in weighs about 0.44 lb (0.20 kg), and a 20 in circle at 0.125 in about 3.8 lb (1.7 kg), at 2.71 g/cm³. Weight grows with the square of the diameter: double the diameter, four times the weight.
How do I turn my circle usage into tons?
Multiply the pieces by the weight of one circle and divide by 2,204.6 lb per metric ton. For example, 20,000 circles of 12 in at 0.040 in weigh about 8,860 lb, that is 4.02 metric tons. The calculator does it with your diameter, thickness and alloy.
What circle sizes does Almexa make?
5.51 to 48 in (140 to 1,219 mm) in diameter in 1000 and 3000 series and up to 36 in (914 mm) in 5000 series, 0.0220 to 0.1575 in (0.56 to 4.0 mm) thick, per the September 2026 technical sheet.
Does the calculation include blanking scrap?
No. The calculator gives the weight of the finished circle; the skeleton left after blanking depends on how the circles are nested and on the strip width, so it is not included here.
Send diameter, thickness, alloy and pieces per month. We quote from the plant.
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