By Zencalcy Editorial TeamLast reviewed About us
Plate is quoted by the pound but ordered by the sheet, so a quick weight check tells you whether the forklift, the truck and the wallet can take it. This calculator works for any flat stock — steel, stainless, aluminium, copper, brass or glass — and reports the weight per square foot as well.
Weight of plate stock in any material and thickness.
m = L × W × t × ρ
Length and width are in feet, thickness in inches. Weight per square foot is thickness in inches × 12 × density; for steel that is 0.2836 × 12 = 3.40 lb/ft² per inch, or 0.2836 lb/ft² per 1/12 inch.
| Symbol | Meaning |
|---|---|
| L, W | Plate dimensions. |
| t | Plate thickness. |
| ρ | Density of the material. |
The sheet is 32 sq ft at 0.5 inch, so it weighs 32 × 0.5 × 40.8 = 653 lb (296 kg).
Continue with the Gravel Calculator, Sand Calculator, Rock Calculator, or the River Rock Calculator — or browse more materials & quantities and all construction calculators.
40.8 lb. Half-inch is 20.4 lb/ft², and quarter-inch is 10.2 lb/ft².
Results use standard construction estimating arithmetic: volumes from measured area and depth, unit weights from published material densities, and code-referenced spans or clearances where the page names a code. Quantities are rounded up to whole saleable units and include the stated waste allowance. These tools are planning aids, not structural design, and do not replace a licensed engineer, a local code check, or a contractor's site measurement.
Reference material used to build and check this calculator:
Last reviewed: September 2026. See how we build and check every tool on the about page.
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Content updated: September 2026