1.2 mm steel plate weight

Weight per square metre, per sheet, and a calculator for any size

A 1.2 mm steel plate weighs 9.42 kg/m² (1.93 lb/ft²). A 1220 × 2440 mm (4 × 8 ft) sheet weighs 28.0 kg.

Weight of common sheet sizes

Sheet sizeAreaWeight
1000 × 2000 mm2.000 m²18.8 kg
1220 × 2440 mm4 × 8 ft2.977 m²28.0 kg
1250 × 2500 mm3.125 m²29.4 kg
1500 × 3000 mm4.500 m²42.4 kg
1524 × 3048 mm5 × 10 ft4.645 m²43.8 kg

Weight calculator

Each sheet: 28.0 kg

How the weight is worked out

Weight (kg) = length (m) × width (m) × thickness (mm) × 7.85

For a 1220 × 2440 mm sheet: 1.22 × 2.44 × 1.2 × 7.85 = 28.0 kg. The factor 7.85 is the density of steel, 7,850 kg/m³ (the unit mass of steel in EN 1993-1-2 §3.2.2), for each millimetre of thickness.

Nominal weights. Real plates differ slightly because of rolling tolerances on thickness (for example EN 10029 or ASTM A6/A6M), and galvanizing or paint adds weight. Stainless steel and aluminium have different densities.

Cutting parts from 1.2 mm plate? Steel Optimizer nests your parts on these sheets and tells you how many sheets to buy, the scrap and the reusable offcuts, straight from your Excel or Tekla list.

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