Calculate aluminum weight from size and density. Free metal weight calculator for sheets, plates, and bars with cost estimation, waste factor, and currency support.
| Component | Value | Unit |
|---|
Enter details and calculate to see breakdown.
Powered by Techraxy
ADVERTISEMENT
Founder & CEO, Techraxy
Faiq Ur Rahman is a web designer, digital product developer, and Founder of Techraxy, a growing platform of online calculators and utility tools. He specializes in building structured, user-friendly tools focused on finance, health, conversions, productivity, and everyday problem-solving. He is passionate about developing practical digital solutions that make complex tasks simpler for users worldwide.
User Ratings:
ADVERTISEMENT
ADVERTISEMENT
Whether you’re machining custom parts, ordering aluminum sheet for a fabrication project, or estimating shipping costs for metal components, knowing the exact weight of your material is essential. Aluminum’s light weight and corrosion resistance make it one of the most popular metals across industries from aerospace and automotive to construction and consumer goods. This aluminum weight calculator helps you determine weight from dimensions and density, with cost estimates and waste factor included.
Engineers estimating material requirements, fabricators preparing bids, hobbyists working on metal projects, and logistics professionals calculating shipping weights all need reliable weight calculations. The calculator accepts length, width, and thickness in multiple units — millimeters, centimeters, meters, inches, and feet with density in g/cm³, kg/m³, lb/in³, and lb/ft³. It provides weight in kilograms and pounds with full cost breakdowns.
Techraxy built this aluminum weight calculator to simplify metal estimation for professionals and DIY enthusiasts alike. Everything runs locally in your browser, so your data stays private while you plan your next project.
Enter the length, width, and thickness of your aluminum part in your preferred units — mm, cm, m, in, or ft.
Set the density of your aluminum alloy (the default 2.70 g/cm³ works for most aluminum alloys).
Enter the number of identical pieces you’re calculating.
Input the price per kilogram in your chosen currency.
Adjust the waste factor percentage to account for cutting losses and machining waste.
Review the summary tab for total weight and estimated cost, or switch to the detailed breakdown tab for a complete itemized view.
Aluminum weight calculation combines volume and density using the standard physics relationship. The calculator determines weight based on the dimensions of a rectangular prism:
Volume = Length × Width × Thickness
All dimensions convert to millimeters before volume calculation. Volume then converts to cubic centimeters, where density is typically specified.
Weight = Volume × Density
Weight appears in grams, then converts to kilograms and pounds. The calculator supports multiple density units:
g/cm³ (standard for metals)
kg/m³ (SI unit)
lb/in³ (imperial for dense materials)
lb/ft³ (imperial for lighter materials)
With Waste Factor: Weight with Waste = Weight × (1 + Waste Percentage / 100)
Cost Calculation: Total Cost = Weight (kg) × Price per kg
A fabricator is ordering aluminum plates for a custom enclosure. Each plate measures 200 mm long, 150 mm wide, and 8 mm thick. The fabricator needs 10 plates, and the aluminum has a density of 2.70 g/cm³. Aluminum costs $3.00 per kilogram, and the fabricator wants to include a 5% waste factor for cutting.
Step 1: Convert dimensions to mm — length = 200 mm, width = 150 mm, thickness = 8 mm.
Step 2: Calculate volume in mm³ — 200 × 150 × 8 = 240,000 mm³ per plate.
Step 3: Convert to cm³ — 240,000 ÷ 1000 = 240 cm³ per plate.
Step 4: Apply quantity — 240 × 10 = 2,400 cm³ total.
Step 5: Calculate weight in grams — 2.70 × 2,400 = 6,480 g.
Step 6: Convert to kilograms — 6,480 ÷ 1000 = 6.48 kg.
Step 7: Apply waste factor — 6.48 × 1.05 = 6.804 kg with waste.
Step 8: Calculate cost — 6.48 × $3.00 = $19.44 total, or $20.41 with waste.
The fabricator needs about 6.5 kilograms of aluminum for the plates, or 6.8 kilograms when ordering with waste factor. This estimate helps with material ordering and cost planning.
The density of aluminum is approximately 2.70 g/cm³ at room temperature. Different aluminum alloys range from about 2.63 g/cm³ to 2.85 g/cm³. The calculator uses 2.70 g/cm³ as the default, but you can adjust it for specific alloys.
Measure the length, width, and thickness of the sheet. Multiply them to get volume, then multiply by density. The calculator handles all unit conversions automatically. For example, a 1 m × 1 m × 2 mm sheet weighs about 5.4 kg (2.70 × 100 × 100 × 0.2).
Aluminum weighs approximately 0.0975 lbs per cubic inch (2.70 g/cm³ × 1 cm³/0.0610237 in³ × 1 lb/453.592 g = 0.0975 lb/in³). The calculator converts automatically between units.
Different alloying elements change the density of aluminum. Copper additions increase density (2xxx series, ~2.78 g/cm³), while magnesium and silicon additions (6xxx series) are close to pure aluminum (~2.70 g/cm³). The calculator’s adjustable density field accommodates any alloy.
While this calculator is designed for aluminum, the physics is the same for any metal. You can adjust the density to match steel (7.85 g/cm³), copper (8.96 g/cm³), titanium (4.51 g/cm³), or any other material by entering the appropriate density value.
For simple cutting operations, 2% to 5% waste is typical. For machining, 5% to 10% accounts for material removed. For stamping or forming, 5% to 15% may be needed. For complex parts with significant machining, 10% to 20% waste might be appropriate.
Aluminum is about one-third the weight of steel for the same volume. Steel has a density of approximately 7.85 g/cm³, compared to 2.70 g/cm³ for aluminum. This is why aluminum is preferred in applications where weight reduction is critical.
6061 aluminum has a density of 2.70 g/cm³, which equals approximately 0.0975 lb/in³. A cubic inch of 6061 weighs about 0.0975 pounds, or about 44.2 grams.
Multiply kilograms by 2.20462 to get pounds. The calculator shows both units in the results automatically.
The 2000 series (particularly 2024) with a density around 2.78 g/cm³ is actually slightly heavier than pure aluminum. Some of the lightest alloys are in the 5000 series (5083 at 2.66 g/cm³) and 6000 series (6061 at 2.70 g/cm³). Pure aluminum (1100 series) has the lowest density at 2.71 g/cm³.
ADVERTISEMENT
ADVERTISEMENT