How much does a 4x8 sheet of 1/4 inch steel weigh?

Electrical & MechanicalMetal Density Sizing

Metal Plate & Sheet Weight Calculator

Calculate total weight in pounds and kilograms for steel, aluminum, brass, and copper rectangular metal plates and structural baseplates.

Electrical & Mechanical Field StandardsMetal Density Sizing

Engineering formulations calibrated to IPC, UPC & NEC specificationsSub-Zero Cold Climate Tolerances

Quick Summary & Key Answer

A 3/8-inch thick mild carbon steel plate measuring 24" × 48" weighs approximately 122.5 lbs (55.6 kg). An identical aluminum plate weighs only 42.1 lbs due to aluminum's much lower density (roughly 1/3 the weight of steel).

Steel density = 0.2836 lbs/cu in (490 lbs/cu ft).
Aluminum weighs approximately 65% less than structural steel.
Copper is roughly 14% denser than carbon steel.

Interactive Calculator

Adjust inputs for real-time results

Plate Thicknessinches

inches

3/8" = 0.375".

Plate Widthinches

inches

Plate Lengthinches

inches

Metal Material

Calculated OutputMetal Weight Verified

Total Plate Weight

122.5 lbspounds

Weight in Kilograms: 55.6 kg
Volume in Cubic Inches: 432.0 in³
Weight per Square Foot: 15.31 lbs/sq ft

Note: Formula: Weight = Thickness (in) × Width (in) × Length (in) × Density (lbs/in³).

Metal Density Standards

Accurate plate weight calculation is required to size crane rigging straps and flatbed axle loads.

Frequently Asked Questions

Common questions regarding this calculation and code compliance

A 4x8 foot (48"x96") sheet of 1/4-inch steel weighs approximately 326.7 lbs.