Steel Weight Calculator
Calculate weight of steel bars, rods, beams, tubes, plates, and sections for construction projects
Calculate Steel Weight
Density: 7870 kg/m³
Steel Weight Results
Formula: Weight = Volume × Density
Volume: 0.00 cm³
Density: 7870 kg/m³
Steel Type: Mild Steel
Shape: Round Bar
Quantity: 1 piece
Weight Analysis
Example Calculation
12mm Steel Rod Example
Material: Mild steel (TMT bar)
Shape: Round bar/rod
Diameter: 12 mm
Length: 12 m (standard length)
Density: 7870 kg/m³
Calculation Steps
1. Cross-sectional area = π × (d/2)² = π × (0.012/2)² = 1.131 × 10⁻⁴ m²
2. Volume = Area × Length = 1.131 × 10⁻⁴ × 12 = 1.357 × 10⁻³ m³
3. Weight = Volume × Density = 1.357 × 10⁻³ × 7870 = 10.68 kg
Quick formula: Weight = d² × L / 162 = 12² × 12 / 162 = 10.67 kg
Steel Densities (kg/m³)
Common Steel Shapes
Round Bar
Solid circular cross-section
Square Bar
Solid square cross-section
Tube/Pipe
Hollow circular section
Angle
L-shaped structural section
Steel Weight Tips
Always verify measurements before ordering steel
Account for 5-10% waste in material estimates
Consider transport and handling costs for heavy loads
TMT bars are commonly available in 12m lengths
Quick formula for round bars: Weight = d²×L/162
Understanding Steel Weight Calculations
Why Calculate Steel Weight?
Steel weight calculations are essential in construction for several critical reasons. Accurate weight calculations help in cost estimation, as steel is typically priced per unit weight. They also ensure proper structural design and safe transportation logistics.
Applications
- •Material procurement and cost estimation
- •Structural load calculations
- •Transportation planning and logistics
- •Crane and lifting equipment selection
Basic Formula
Weight = Volume × Density
W = V × ρ
- W: Weight of steel (kg)
- V: Volume of steel (m³)
- ρ: Density of steel type (kg/m³)
Quick Formula for Round Bars
Weight = d² × L / 162
Where d is diameter (mm), L is length (m)
Volume Formulas
Round: π × (d/2)² × L
Square: a² × L
Rectangle: w × h × L
Tube: π × (D²-d²)/4 × L
Common Densities
Mild Steel: 7870 kg/m³
Stainless: 8030 kg/m³
Carbon: 7840 kg/m³
Tool Steel: 7715 kg/m³
Standard Sizes
TMT Bars: 6-32mm dia
Length: 12m standard
Plates: 6-50mm thick
Angles: 25×25 to 200×200