Metal Sheet Weight per Square Meter Calculator

Calculate kg per square meter for metal sheet and plate from thickness and material density. Then estimate total sheet weight for purchasing, fabrication and logistics.

Sheet weight per m²

Total sheet or plate weight

Use the same material and thickness above, then enter the sheet dimensions and quantity to estimate the total mass.

Quick reference: sheet weight per m²

Carbon steel
At 7850 kg/m³, every 1 mm of thickness weighs approximately 7.85 kg/m².
Stainless steel
At approximately 8000 kg/m³, every 1 mm weighs about 8.00 kg/m².
Aluminum
At approximately 2700 kg/m³, every 1 mm weighs about 2.70 kg/m².
Copper
At approximately 8960 kg/m³, every 1 mm weighs about 8.96 kg/m².
The exact density of an alloy can differ from the generic value shown. For purchasing or engineering work, use the material specification or mill data when available.

Formula for kg per square meter

Weight per square meter
kg/m² = thickness in meters × density in kg/m³.
Easy metric shortcut
If thickness is in millimeters and density is in kg/m³: kg/m² = thickness × density ÷ 1000.
Example: 3 mm carbon steel
3 × 7850 ÷ 1000 = 23.55 kg/m².
This is a theoretical weight based on thickness, area and density. Actual commercial sheet weight can vary because of thickness tolerances, alloy composition, surface condition and manufacturing tolerances.

Frequently Asked Questions

How much does 1 mm steel sheet weigh per square meter? Using a density of 7850 kg/m³, 1 mm carbon steel weighs approximately 7.85 kg per square meter.

How much does 2 mm aluminum sheet weigh per square meter? Using 2700 kg/m³, 2 mm aluminum weighs approximately 5.40 kg/m².

What is the formula for sheet metal weight? Sheet weight equals area × thickness × density.

Can I calculate plate weight as well? Yes. The same mass formula applies to flat metal sheet and plate when thickness, dimensions and density are known.

Why does stainless steel weigh slightly more than aluminum? Stainless steel has substantially higher density than aluminum, so a sheet of identical dimensions and thickness has greater mass.

Can I use a custom density? Yes. The custom-density option lets you enter a material-specific density in kg/m³ or g/cm³.

Can this calculate a full order weight? Yes. Enter length, width and quantity in the total sheet section to estimate the combined mass.

Is the result exact for purchasing? It is an estimate based on the entered dimensions and density. Supplier specifications and actual weighed material should be used for final commercial quantities.