Steel Weight Calculator

Author: Henrick Yau

- May 12, 2025

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Calculate the weight of steel shapes, plates, bars, and profiles. This calculator helps determine the weight of various steel products based on dimensions and steel type.

Steel Shape Selection

Select Shape:

Steel Type:

Width:

Thickness:

Length:

Quantity:

pcs

Display Options

Decimal Places:

Show calculation steps

About Steel Weight Calculations

Calculating the weight of steel is essential for structural engineering, fabrication, transportation, and cost estimation. The weight depends on the shape, dimensions, and type of steel.

Steel Density by Type

Carbon Steel: 7.85 g/cm³ (490 lb/ft³)
Stainless Steel: 7.9-8.0 g/cm³ (493-500 lb/ft³)
Tool Steel: 7.72 g/cm³ (482 lb/ft³)
Alloy Steel: 7.85 g/cm³ (490 lb/ft³)

Weight Calculation Formulas

Basic Formula:

Weight = Volume × Density

Specific Shape Formulas:

Flat Bar: Weight = Length × Width × Thickness × Density
Round Bar: Weight = π × (Diameter/2)² × Length × Density
Square Bar: Weight = Side² × Length × Density
Plate/Sheet: Weight = Length × Width × Thickness × Density
Round Tube: Weight = π × [(OD/2)² - (ID/2)²] × Length × Density

Common Unit Conversions

1 metric ton = 1,000 kg = 2,204.62 lb
1 kg = 2.20462 lb
1 g/cm³ = 0.036127 lb/in³ = 62.4280 lb/ft³
1 m = 3.28084 ft = 39.3701 in
1 cm³ = 0.0610237 in³