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I Beam Weight Calculator

Our handy I-beam weight calculator makes it quick and easy to calculate the per foot, per meter, or total weight of I-beams in both sloped and parallel-flanged forms.

For guidance on how to use the calculator, please refer to the user guide below the calculator. We’ve also included a step-by-step tutorial if you’d prefer to calculate the weight an I-beam manually, along with handy weight charts for both IPE and IPN type beams.

I Beam Weight Calculator:
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Total Weight = 0.00 lbs / 0.00 kg
Disclaimer: The weights shown in the above calculator are for guidance only and should not form the basis of any calculations where precise or accurate information is required. It isn’t uncommon for theoretical metal weights and densities to vary considerably from actual weights and densities, for example, due to differences in manufacturing processes and material compositions. Therefore, you should obtain relevant, accurate information from manufacturers if exact weight calculations are required.

How to Use the I-Beam Weight Calculator

  1. The first step is to choose the type of I-beam you want to calculate the weight of, with either ‘sloped flange’ or ‘parallel flange’ options being available.

  2. Next, you need to choose the material used for the I-beam(s) in your calculation, and you can choose this via the ‘I Beam Material’ dropdown in box (2).

    You can change how many I-beams you include in your calculation by updating the ‘Quantity’ input in box (2).

    The ‘Density’ box will automatically be populated based on the material type you choose.

    You can update the ‘Density’ figure to a different value if needed, although we’ve based the figure used for each material on industry guidance.

  3. You’ll need to enter various dimensions for your calculation including ‘Length’, ‘Width’, ‘Height’, ‘Web Thickness’, ‘Flange Thickness’, and one or two ‘Radius’ values depending upon your choice of I-Beam profile.

    You can select the relevant units for each measurement using the ‘Unit’ dropdowns, including millimeters, centimeters, meters, inches, and feet.


    Note: If you choose ‘inch’ as a unit, you’ll need to use either whole or decimal numbers instead of fractions. For example, 0.25 instead of 1/4.

  4. Use the ‘Calculate’ button to complete your calculation, or the ‘Reset’ button to reset the I-beam weight calculator if you want to start over.

How to Calculate I-Beam Weight

Here’s how to manually calculate the weight of an I-beam if you’d prefer to bypass the calculator above:

How to Calculate the Weight of a Parallel-Flanged I-Beam

You’ll first need to calculate the volume of the parallel-flanged I-beam, and you can do so via the following equation:

V1 = (W x FT x L) x 2
V2 = (H – (2 x FT)) x WT x L
V3 = ((R x 2)2 – (π x R2)) x L
Overall Volume = V1 + V2 + V3

The above H beam weight formula consists of the following elements:

V1 = The flange volume part of the calculation

V2 = The web volume part of the calculation

V3 = The radius volume part of the calculation

W = The width of the I-beam

H = The height of the I-beam

L = The length of the I-beam

FT = The I-beam’s flange thickness

WT = The I-beam’s web thickness

R = The I-beam’s radius

To demonstrate the above equations in action, we’ll work through an example of a mild steel (i.e. carbon steel) I-beam with the following dimensions:

  • Length – 3000mm
  • Height – 300mm
  • Width – 150mm
  • Web Thickness – 7.1mm
  • Flange Thickness – 10.7mm
  • Internal Radius – 15.0mm

As we’ll be using a density of 7850kg/m3 for the mild steel in our calculation, we’ll need to convert the above dimensions to meters. The length becomes 3.0m, the height is 0.3m, the width is 0.15m, the web thickness is 0.0071m, the flange thickness is 0.0107m, and the internal radius is 0.015m for the calculation.

Here’s an overview of how the I-beam volume calculation works using the dimensions in this example:

V1 = (0.15 x 0.0107 x 3.0) x 2
V1 = 0.00963m3

V2 = (0.3 – (2 x 0.0107)) x 0.0071 x 3.0
V2 = 0.00593418m3

V3 = ((0.015 x 2)2 – (3.142 x 0.0152)) x 3.0
V3 = 0.00057915m3

Overall Volume = 0.00963m3 + 0.00593418m3 + 0.00057915m3
Overall Volume = 0.01614333m3

Mild Steel Density = 7850 kg/m3

If we multiply the 0.0076m3 volume figure by the 7850 kg/m3 density figure, we end up with a weight of 126.73 kg or 279.38 lbs.

IPE vs IPN Beams – What’s the Difference?

There are two common European standard I-beam types, including IPE and IPN.

IPE is the designation given to I-beams with parallel internal flanges, and these are available in dimensions set out in EN 10365 with product tolerances as per EN 10034:1993.

IPN (or INP as is often used) is the designation given to I-beams with sloped internal flanges. As with IPE beams, IPN beams are available in dimensions specified in EN 10365. However, the product tolerances of IPN beams is specified in EN 10024:1995.

IPE and IPN beams are typically manufactured using steel grades of S235JR, S275JR/J0, and S355JR/J2, but other grades can be used.

Standard beam lengths include 6000mm, 6100mm, 12000mm, and 12100mm. However, many manufacturers can offer these beams in custom sizes.

Here’s an overview of the weight and dimensional information for each cross section type:

IPE Beams

Characterized by parallel internal flanges, here’s a summary of the weight and dimension data of IPE beams:

IPE Beam Size and Weight Chart

IPE Beam Classification Height Width Web Thickness (WT) Flange Thickness (FT) Radius I Beam Weight per Foot I Beam Weight per Meter
IPE 80 80mm 46mm 3.8mm 5.2mm 5.0mm 1.83 kg / 4.03 lbs 6.00 kg / 13.23 lbs
IPE 100 100mm 55mm 4.1mm 5.7mm 7.0mm 2.47 kg / 5.44 lbs 8.10 kg / 17.87 lbs
IPE 120 120mm 64mm 4.4mm 6.3mm 7.0mm 3.16 kg / 6.96 lbs 10.37 kg / 22.86 lbs
IPE 140 140mm 73mm 4.7mm 6.9mm 7.0mm 3.92 kg / 8.65 lbs 12.89 kg / 28.43 lbs
IPE 160 160mm 82mm 5.0mm 7.4mm 9.0mm 4.80 kg / 10.58 lbs 15.77 kg / 34.77 lbs
IPE 180 180mm 91mm 5.3mm 8.0mm 9.0mm 5.72 kg / 12.61 lbs 18.80 kg / 41.44 lbs
IPE 200 200mm 100mm 5.6mm 8.5mm 12.0mm 6.80 kg / 15.00 lbs 22.36 kg / 49.29 lbs
IPE 220 220mm 110mm 5.9mm 9.2mm 12.0mm 7.97 kg / 17.57 lbs 26.20 kg / 57.75 lbs
IPE 240 240mm 120mm 6.2mm 9.8mm 15.0mm 9.34 kg / 20.60 lbs 30.71 kg / 67.69 lbs
IPE 270 270mm 135mm 6.6mm 10.2mm 15.0mm 10.97 kg / 24.20 lbs 36.07 kg / 79.51 lbs
IPE 300 300mm 150mm 7.1mm 10.7mm 15.0mm 12.85 kg / 28.34 lbs 42.24 kg / 93.13 lbs
IPE 330 330mm 160mm 7.5mm 11.5mm 18.0mm 14.95 kg / 32.97 lbs 49.14 kg / 108.35 lbs
IPE 360 360mm 170mm 8.0mm 12.7mm 18.0mm 17.37 kg / 38.30 lbs 57.09 kg / 125.86 lbs
IPE 400 400mm 180mm 8.6mm 13.5mm 21.0mm 20.18 kg / 44.48 lbs 66.30 kg / 146.17 lbs
IPE 450 450mm 190mm 9.4mm 14.6mm 21.0mm 23.61 kg / 52.04 lbs 77.57 kg / 171.02 lbs
IPE 500 500mm 200mm 10.2mm 16.0mm 21.0mm 27.59 kg / 60.84 lbs 90.68 kg / 199.92 lbs
IPE 550 550mm 210mm 11.1mm 17.2mm 24.0mm 32.11 kg / 70.79 lbs 105.51 kg / 232.62 lbs
IPE 600 600mm 220mm 12.0mm 19.0mm 24.0mm 37.26 kg / 82.14 lbs 122.45 kg / 269.95 lbs

IPN Beams

Characterized by sloped internal flanges, here’s a summary of the weight and dimension data of IPN beams:

IPN Beam Size and Weight Chart

IPN Beam Classification Height Width Web Thickness (WT) Flange Thickness (FT) Radius 1 Radius 2 I Beam Weight per Foot I Beam Weight per Meter
IPN 80 80mm 42mm 3.9mm 5.9mm 3.9mm 2.3mm 1.81 kg / 3.99 lbs 5.94 kg / 13.10 lbs
IPN 100 100mm 50mm 4.5mm 6.8mm 4.5mm 2.7mm 2.54 kg / 5.60 lbs 8.34 kg / 18.39 lbs
IPN 120 120mm 58mm 5.1mm 7.7mm 5.1mm 3.1mm 3.38 kg / 7.46 lbs 11.10 kg / 24.47 lbs
IPN 140 140mm 66mm 5.7mm 8.6mm 5.7mm 3.4mm 4.36 kg / 9.61 lbs 14.30 kg / 31.53 lbs
IPN 160 160mm 74mm 6.3mm 9.5mm 6.3mm 3.8mm 5.46 kg / 12.03 lbs 17.90 kg / 39.46 lbs
IPN 180 180mm 82mm 6.9mm 10.4mm 6.9mm 4.1mm 6.68 kg / 14.72 lbs 21.90 kg / 48.28 lbs
IPN 200 200mm 90mm 7.5mm 11.3mm 7.5mm 4.5mm 7.99 kg / 17.61 lbs 26.20 kg / 57.76 lbs
IPN 220 220mm 98mm 8.1mm 12.2mm 8.1mm 4.9mm 9.48 kg / 20.90 lbs 31.10 kg / 68.56 lbs
IPN 240 240mm 106mm 8.7mm 13.1mm 8.7mm 5.2mm 11.03 kg / 24.33 lbs 36.20 kg / 79.81 lbs
IPN 260 260mm 113mm 9.4mm 14.1mm 9.4mm 5.6mm 12.77 kg / 28.16 lbs 41.90 kg / 92.37 lbs
IPN 280 280mm 119mm 10.1mm 15.2mm 10.1mm 6.1mm 14.60 kg / 32.19 lbs 47.90 kg / 105.60 lbs
IPN 300 300mm 125mm 10.8mm 16.2mm 10.8mm 6.5mm 16.52 kg / 36.42 lbs 54.20 kg / 119.49 lbs
IPN 320 320mm 131mm 11.5mm 17.3mm 11.5mm 6.9mm 18.59 kg / 40.99 lbs 61.00 kg / 134.48 lbs
IPN 340 340mm 137mm 12.2mm 18.3mm 12.2mm 7.3mm 20.73 kg / 45.69 lbs 68.00 kg / 149.91 lbs
IPN 360 360mm 143mm 13.0mm 19.5mm 13.0mm 7.8mm 23.20 kg / 51.14 lbs 76.10 kg / 167.77 lbs
IPN 380 380mm 149mm 13.7mm 20.5mm 13.7mm 8.2mm 25.60 kg / 56.45 lbs 84.00 kg / 185.19 lbs
IPN 400 400mm 155mm 14.4mm 21.6mm 14.4mm 8.6mm 28.16 kg / 62.09 lbs 92.40 kg / 203.71 lbs
IPN 450 450mm 170mm 16.2mm 24.3mm 16.2mm 9.7mm 35.05 kg / 77.28 lbs 115.00 kg / 253.53 lbs
IPN 500 500mm 185mm 18.0mm 27.0mm 18.0mm 10.8mm 42.98 kg / 94.75 lbs 141.00 kg / 310.85 lbs
IPN 550 550mm 200mm 19.0mm 30.0mm 19.0mm 11.9mm 50.60 kg / 111.55 lbs 166.00 kg / 365.97 lbs
IPN 600 600mm 215mm 21.6mm 32.4mm 21.6mm 13.0mm 60.78 kg / 133.99 lbs 199.40 kg / 439.60 lbs

Other Helpful Weight Calculators

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Whether you’re looking to calculate the weight of a metal pipe, round bar, square or rectangular tube, rolled channel, sheet material, or a different shape type, we have a selection of handy online calculators to help you:

Calculators by Material:

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Author: Jon Maxwell
Senior Writer, ToolCrowd
Jon Maxwell writes about various topics for ToolCrowd, including tool reviews, material advice, common home problems, and general DIY advice and how-to articles. His work has been published in national publications for audiences including consumers, homeowners, and industry experts. Jon has a bachelor's degree in Building Surveying and a master's degree in a branch of Civil Engineering focusing on concrete and steel durability. When he isn't writing for ToolCrowd, Jon enjoys completing DIY tasks in his own home, as well as woodworking in his home workshop, snowboarding, and website development. Contact Jonarrow_right_alt