Steel Plate & Sheet Weight Formula
Plate weight = length × width × thickness × density. For carbon steel use 7850 kg/m³ (7.85 g/cm³). Enter dimensions in the plate calculator for kg per piece and totals.
Reference values
- Carbon steel density
- 7850 kg/m³ (7.85 g/cm³)
- Formula
- Weight = L × W × T × ρ
- Units
- Use meters for L, W, T when ρ is in kg/m³
Formula steps
Convert dimensions to meters
Convert mm thickness and sheet dimensions to meters.
Compute volume
Volume = length × width × thickness (m³).
Multiply by density
Weight = volume × 7850 kg/m³ for carbon steel.
Verify in calculator
Use the plate calculator for unit conversion and quantity.
Worked example
2 m × 1 m × 10 mm (0.01 m): volume 0.02 m³ × 7850 = 157 kg.
FAQ
Galvanized or stainless?
Change density in the calculator — SS304 is ~8000 kg/m³.
Sheet vs plate?
Same formula; thickness and standard names differ by supplier.