⚙️ Plate Weight Calculator
Calculate the weight of a flat metal plate based on its dimensions and material type.
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What this calculator does
This tool calculates the weight of a flat rectangular metal plate using its length, width, thickness, and the density of the material selected.
The formula
Weight = length × width × thickness × material density (in pounds per cubic inch). Mild steel is about 0.2836 lb/in³, while aluminum is much lighter at roughly 0.0975 lb/in³.
These are standard reference densities; exact alloy composition can shift the true density slightly, so confirm with your mill certificate for critical applications.
Last reviewed August 2026