# Theoretical Metal Weight Calculation Formula (30 Types of Metals)

If you’re working in the metalworking industry, even you’re engineers, you will try to find one calculator to help you calculate the weight of various metals and steels including ms plate, gi sheet, structural steel, ms angle, mild steel, steel bar, square tube, angle, aluminum etc.

## Theoretical Metal Weight Calculator

Below is the calculator for you to calculate the weight of various metals. What you need to do is calculate the sectional area and find the metal density.

For the metal density, you can also refer to:

From the above two posts, you will find the density of various metals and alloys.

However, sometimes you may want to learn the weight calculation formula and keep it in your mind, here is it:

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

In order to help you quickly find the metal weight formula, I made infographic which is not only practical but also beautiful. (To the bottom)

P.S: Among all of the metal weight calculation formula in the following part, there are two kinds of metals that are not mentioned, which are I beam steel and H beam steel.

If you want to know the difference between H beam steel and I beam steel as well as the methods to calculate the weight of H beam steel and I beam steel, you will get the answers from the following two quick links:

## Theoretical Steel Weight Chart

If you want to get the weight of various metals from the chart, you can refer to the following page: ### Steel Plate

• 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 Tube

• 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

• 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

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

• Formula: edge width(mm)×thickness(mm)×length(m)×0.00785
• E.g: 50mm(edge width)×5.0mm(thickness)×6m(length)
• Calculation: 50×5×6×0.00785=11.7.75(kg) ### Hexagonal Steel

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

• 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

• Formula: (edge length+edge 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

• Formula: Edge 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

• Formula: (edge 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

• Formula: (edge width+edge 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 Tube

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

• Formula: (OD-wall thickness)×thickness(mm)×length(m)×0.02796 ### Aluminum Embossed Sheet

• Formula: length(m)×width(mm)×thickness (mm)×0.00296 ### Brass Tube

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

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

• Formula: length(m)×width(mm)×thickness(mm)×0.0072 • Formula: length(m)×width(mm)×thickness(mm)×0.01137 ### Octagonal Steel

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

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

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

• Formula: dia.(mm)×dia.(mm)×length(m)×0.0022 ### Square Copper Rod

• Formula: width(mm)×width(mm)×length(m)×0.0089 ### Square Brass Rod

• Formula: width(mm)×width(mm)×length(m)×0.0085 ### Square Aluminum Rod

• Formula: width(mm)×width(mm)×length(m)×0.0028 ### Hexagonal Copper Rod

• Formula: across width(mm)×across width(mm)×length(m)×0.0077 ### Hexagonal Brass Rod

• Formula: width(mm)×across width(mm)×length(m)×0.00736 ### Hexagonal Aluminum Rod

• Formula: across width(mm)×across width(mm)×length(m)×0.00242 ### Aluminum-Plate.jpg

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

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

### 411 thoughts on “Theoretical Metal Weight Calculation Formula (30 Types of Metals)”

1. These formulas are correct. The formulas are easily derived through the equation m=pv

“m” is the mass of the object.
V is what you have to calculate as the volume.
p is the density.

The website is simplifying this formula into situation specific equations which can be derived from common variables you might know.

1. Ajay Kumar Shaw

It is very helpful for cost estimation for people like me in the procurement . please share a copy of it PDF .
Thanks

2. You say: “If you want the PDF version of the weight calculation, you can save below infographic or bookmark in web browser.”
everything on this page is protected so no possibility to save or copy anything from it…

1. in order to protect it, we limit the downloads. However, you can save the bookmark in your browser for future convenience checking.

1. this formula is one simple way to calculate rebar weight based on experience. You can also calculate based on the round steel weight calculation formula above.

3. I have gone through the formulas, they were helpful and correct except for one or two that need more explanation.

Besides that, you have really done a very good job. Well done.

1. Most of the density of the steel should be confirmed by your steel suppliers. Probably we will update this later for your reference.

4. Very Useful for engineers, Thank you for your valuable post. MS Channel weight formula also , if you have please share it.

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7. Engr.Aminur Rahman

Really very helpful to calculate the weight of steel material & iron material.

Very Very thanks.

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10. SRIKUMAR CHAKRABORTY

Thanks for this kind information. Would it be possible to forward the portion of steel product calculation part to my email: [email protected] , Regards – Srikumar Chakraborty, Kolkata

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