Steel Plate Weight Calculator — ft, lbs
How to use this calculator
Choose a plate shape (rectangle, circle, triangle, or ring/annulus), enter dimensions in feet and inches with fraction precision, select the material type, and specify the plate thickness and quantity. Results update instantly with area, volume, weight per plate, and total weight.
Materials — Carbon steel (490 lb/ft³), Stainless 304 (501 lb/ft³), Stainless 316 (501 lb/ft³), Aluminum 6061 (169 lb/ft³), Copper (559 lb/ft³).
Cost — enter price per pound or per plate to estimate total material cost.
Saved Calculations
| Time | Shape | Material | Area ft² | Wt/plate | Total lbs | Cost |
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How to Calculate Steel Plate Weight
This calculator estimates the weight of metal plates in four shapes: rectangle, circle, triangle, and ring (annulus). Enter dimensions in feet and inches with fraction precision, select the plate thickness from common gauges (¼″ to 1″+), and choose the material. The calculator uses the material density to compute area, volume, weight per plate, and total weight.
Material Densities
Carbon steel (A36): 490 lb/ft³ (7 850 kg/m³). Stainless 304 and 316: 501 lb/ft³ (8 030 kg/m³). Aluminum 6061: 169 lb/ft³ (2 710 kg/m³). Copper: 559 lb/ft³ (8 960 kg/m³). These are standard reference values used throughout the industry.
Formulas
Rectangle: A = L × W. Circle: A = π × (D/2)². Triangle: A = ½ × B × H. Ring: A = π × ((D₀/2)² - (Dᵢ/2)²). Volume = A × thickness. Weight = Volume × density.
