# Calculate Steel Weight for 30 Metals: Formula & Calculator

## I. How to Calculate Steel & Metal Weight?

### Density-Based Formula

The following weight calculation formula can be used to calculate the steel/metal weight:

Weight (kg) = Sectional Area (mm2) × Length (m) × Density (ρ, g/cm3)× 1/1000

Above is the formula to calculate the steel weight in kg.

### Determination of Density

For the metal density, you can also refer to the following:

See also  16 Types of Steel Defects: Pay Attention When Choosing Materials!

### Simple Steel Weight Formulas

Simply enter data indicated (Decimal Inches), move from left to right making computations by factors as shown.

• ROUND Diameter x Diameter x 2.6729 = Lbs. Per Foot
• FLAT Thickness x Width x 3.4032 = Lbs. Per Foot
• SQUARE Diameter x Diameter x 3.4032 = Lbs. Per Foot
• HEXAGON *Diameter x Diameter x 2.9437 = Lbs. Per Foot
• OCTAGON *Diameter x Diameter x 2.8193 = Lbs. Per Foot
• PIPE Actual O.D. – Wall x Wall x 10.68 = Lbs. Per Foot
• TUBE O.D. – Wall  x Wall  x 10.68 = Lbs. Per Foot
• SHEET Thickness  x Width  x  Length  x  .2904 = Lbs. Each
• COIL O.D. x O.D.  – I.D.  x I.D. x .2223 = Lbs. Per Inch of Width
• SHEET CIRCLE Diameter x  Diameter x  Thickness x  .228 = Lbs. Each
• PLATE Thickness  x  Width  x  Length x  .2836 = Lbs. Each

PLATE SHAPES:

• CIRCLE Diameter x  Diameter x  Thickness  x  .2227 = Lbs. Each
• RING Diameter x Diameter – I.D. x I.D. x Thickness x .2227 = Lbs. Each
• CIRCLE SECTOR    Radius x Radius x Number of Degrees in Arc x Thickness  x  .0025 = Lbs. Each
• TRIANGLE (Right Angle) Base Length  x  Height  x Thickness  x  .1418 = Lbs. Each
• TRAPEZOIDS (2 Sides Parallel) Side “A”  + Side “B”  x Height x Thickness  x 14.18 = Lbs.Each
• HEXAGON (Equal Sides) Side Length  x  Side Length x  .7367 = Lbs. Each
• OCTAGON Side Length  x  Side Length  x  1.3692 = Lbs. Each

NOTE: Formulas Are Based on Nominal Weights at .2836 Lbs. Per Cubic Inch and Should Be Considered Approximations Only Rather Than Actual Scale Weight.

Weights of Various Metals in Pounds Per *Cubic Foot

## II. Steel & Metal Weight Calculator

To assist you in calculating the weight of various metals and steels, including MS plate, GI sheet, structural steel, MS angle, mild steel, steel bar, square tube, angle, and aluminum, we have created a Steel Weight Calculator and Metal Weight Calculator to help you determine the weight of metals in different shapes.

## III. Calculation of Theoretical Steel Weight

The unit of measurement for calculating the theoretical weight of steel is kilograms (kg). The basic formula is:

W (Weight, kg) = F (Cross-sectional Area, mm²) × L (Length, m) × ρ (Density, g/cm³) × 1/1000

The density of steel is: 7.85g/cm³

### Steel Plate weight calculation formula

• Formula: length(m)×width(m)×thickness(mm)×7.85
• E.g: 6m (length)×1.51m(width)×9.75mm (thickness)
• Calculation: 6×1.51×9.75×7.85=693.43kg

### Steel Pipe weight calculation formula

• Formula: (OD-wall thickness)×wall thickness(mm)×length(m)×0.02466
• E.g: 114mm(OD)×4mm(wall thickness)×6m(length)
• Calculation: (114-4)×4×6×0.02466=65.102kg

### Steel Rod weight calculation formula

• Formula: dia.(mm)×dia.(mm)×length(m)×0.00617
• E.g: Φ20mm (dia.)×6m(length)
• Calculation: 20×20×6×0.00617=14.808kg

### Square Steel weight calculation formula

• Formula: side width(mm)×side width(mm)×length(m)×0.00785
• E.g: 50mm(side width)×6m(length)
• Calculation: 50×50×6×0.00785=117.75(kg)

### Flat Steel weight calculation formula

• Formula: side width(mm)×thickness(mm)×length(m)×0.00785
• E.g: 50mm(side width)×5.0mm(thickness)×6m(length)
• Calculation: 50×5×6×0.00785=11.775(kg)

### Hexagonal Steel weight calculation formula

• Formula: side-to-side dia.×side-to-side dia.× length(m)×0.0068
• E.g: 50mm(dia.)×6m (length)
• Calculation: 50×50×6×0.0068=102(kg)

### Rebar weight calculation formula

• Formula: dia.mm×dia.mm×length(m)×0.00617
• E.g: Φ20mm(dia.)×12m(length)
• Calculation: 20×20×12×0.00617=29.616kg

### Flat Steel Tube weight calculation formula

• Formula: (side length+side width)×2×thickness×length(m)×0.00785
• E.g: 100mm×50mm×5mm(thickness)×6m (length)
• Calculation: (100+50)×2×5×6×0.00785=70.65kg

### Rectangular Steel Tube weight calculation formula

• Formula: side width(mm)×4×thickness×length(m)×0.00785
• E.g: 50mm×5mm (thickness)×6m(length)
• Calculation: 50×4×5×6×0.00785=47.1kg

### Equal-leg Angle Steel weight calculation formula

• Formula: (side width×2-thickness)×thickness×length(m)×0.00785
• E.g: 50mm×50mm×5(thickness)×6m(length)
• Calculation: (50×2-5)×5×6×0.00785=22.37kg

### Unequal-leg Angle Steel weight calculation formula

• Formula: (side width+side width-thickness)×thickness×length(m)×0.0076
• E.g: 100mm×80mm×8(thickness)×6m(length)
• Calculation: (100+80-8)×8×6×0.0076=62.746kg

### Brass Pipe weight calculation formula

• Formula: (OD-wall thickness)×thickness(mm)×length(m)×0.0267

### Copper Pipe weight calculation formula

• Formula: (OD-wall thickness)×thickness(mm)×length(m)×0.02796

### Brass Pipe weight calculation formula

• Formula: thickness(mm)×(O.D-thickness)×length(m)×0.0267

### Copper Sheet weight calculation formula

• Formula: length(m)×width(mm)×thickness(mm)×0.0089

### Zinc Plate weight calculation formula

• Formula: length(m)×width(mm)×thickness(mm)×0.0072

### Lead Sheet weight calculation formula

• Formula: length(m)×width(mm)×thickness(mm)×0.01137

### Octagonal Steel weight calculation formula

• Formula: length(m)×across width(mm)×across width(mm)×0.0065

### Copper Rod weight calculation formula

• Formula: dia.(mm)×dia.(mm)×length(m)×0.00698

### Brass Rod weight calculation formula

• Formula: dia.(mm)×dia.(mm)×length(m)×0.00668

### Aluminum Rod weight calculation formula

• Formula: dia.(mm)×dia.(mm)×length(m)×0.0022

### Square Copper Rod weight calculation formula

• Formula: width(mm)×width(mm)×length(m)×0.0089

### Square Brass Rod weight calculation formula

• Formula: width(mm)×width(mm)×length(m)×0.0085

### Square Aluminum Rod weight calculation formula

• Formula: width(mm)×width(mm)×length(m)×0.0028

### Hexagonal Copper Rod weight calculation formula

• Formula: across width(mm)×across width(mm)×length(m)×0.0077

### Hexagonal Brass Rod weight calculation formula

• Formula: width(mm)×across width(mm)×length(m)×0.00736

### Hexagonal Aluminum Rod weight calculation formula

• Formula: across width(mm)×across width(mm)×length(m)×0.00242

### Aluminum Plate weight calculation formula

• Formula: thickness(mm)×width(mm)×length(m)×0.00171

### Aluminum Pipe weight calculation formula

• Formula: thickness(mm)×(O.D(mm)-thickness(mm))×length(m)×0.00879

### 436 thoughts on “Calculate Steel Weight for 30 Metals: Formula & Calculator”

1. kirit

please send it in pdf formate

1. Mehedi

Sir, if you could give me the PDF, I would be very much benefited.
My email:[email protected]

1. Shane

2. kamal

We found it is very useful,
so is it possible to get excel copy please??

3. Olalekan Ogboye

Thanks for this information.. please I will be glad if I can get it in PDF format to [email protected]

4. SOMASHEKAR

Sir, if you could give me the Theoretical Metal Weight Calculation Formula (30 Types of Metals) in PDF of EXCEL it will be of much use for estimation.

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