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Steel Weight Calculator


From sheets and plates to equal or unequal angles, our handy calculator makes it quick and easy to calculate the weight of steel.

For technical guidance, please refer to the user guide below the calculator. We’ve also included a series of helpful step-by-step guides below that to show you the process of calculating the weight of a variety of steel sections in case you want to calculate these manually.

Calculate Steel Weight:
1
toolcrowd steel weight calculator profile image
Total Weight = 0.00 lbs / 0.00 kg

How to Use the Steel Weight Calculator

  1. Use the ‘Select a Steel Profile’ dropdown to choose the profile type that you’d like to calculate the weight of.

  2. Use the ‘Material’ dropdown in box (2) to choose the grade of steel for your selected profile.

    The ‘Density’ box will automatically be populated based on the grade of steel you choose.

    You can update the ‘Density’ figure if needed, although this is based on industry guidance for each material.

  3. Use the ‘Quantity’ box to specify how many units you’d like to include in the calculation.
  4. Depending on the steel profile chosen, you’ll need to enter various dimensions, for example, ‘Length’, ‘Width’, ‘Diameter’, ‘Thickness’, or ‘Height’.

    The calculator will automatically reformat depending on the steel profile type chosen, meaning only the relevant dimensions will be shown.

    You can select the relevant units for each measurement using the ‘Unit’ dropdowns.

    !

    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.

    Click the button below to view a table of common steel dimensions as decimals that you can use in the calculator:


    • Steel Weight Calculator – Inch to Decimal Conversion Table

      1/8

      0.125

      1-9/16

      1.5625

      3-5/8

      3.625

      5/32

      0.15625

      1-5/8

      1.625

      3-11/16

      3.6875

      3/16

      0.1875

      1-11/16

      1.6875

      3-3/4

      3.75

      7/32

      0.21875

      1-3/4

      1.75

      3-13/16

      3.8125

      1/4

      0.25

      1-13/16

      1.8125

      3-7/8

      3.875

      9/32

      0.28125

      1-7/8

      1.875

      3-15/16

      3.9375

      5/16

      0.1325

      1-15/16

      1.9375

      4

      4.00

      11/32

      0.34375

      2

      2.00

      4-1/8

      4.125

      3/8

      0.375

      2-1/16

      2.0625

      4-3/16

      4.1875

      13/32

      0.40625

      2-1/8

      2.125

      4-1/4

      4.25

      7/16

      0.4375

      2-3/16

      2.1875

      4-5/16

      4.3125

      15/16

      0.9375

      2-1/4

      2.25

      4-3/8

      4.375

      1/2

      0.5

      2-5/16

      2.3125

      4-7/16

      4.4375

      17/32

      0.53125

      2-3/8

      2.375

      4-1/2

      4.50

      9/16

      0.5625

      2-7/16

      2.4375

      4-9/16

      4.5625

      19/32

      0.59375

      2-1/2

      2.50

      4-5/8

      4.625

      5/8

      0.625

      2-9/16

      2.5625

      4-11/16

      4.6875

      11/16

      0.6875

      2-5/8

      2.625

      5

      5.00

      3/4

      0.75

      2-11/16

      2.6875

      5-1/16

      5.0625

      13/16

      0.8125

      2-3/4

      2.75

      5-1/8

      5.125

      7/8

      0.875

      2-7/8

      2.875

      5-3/16

      5.1875

      13/16

      0.8125

      2-15/16

      2.9375

      5-1/4

      5.25

      15/16

      0.9375

      3

      3.00

      5-3/8

      5.375

      1

      1.00

      3-1/16

      3.0625

      5-7/16

      5.4375

      1-1/16

      1.0625

      3-1/8

      3.125

      5-1/2

      5.50

      1-1/8

      1.125

      3-3/16

      3.1875

      5-5/8

      5.625

      1-3/16

      1.1875

      3-1/4

      3.25

      5-3/4

      5.75

      1-1/4

      1.25

      3-5/16

      3.3125

      5-7/8

      5.875

      1-5/16

      1.3125

      3-3/8

      3.375

      5-15/16

      5.9375

      1-3/8

      1.375

      3-7/16

      3.4375

      6

      6.00

      1-7/16

      1.4375

      3-1/2

      3.50

       

       

      1-1/2

      1.50

      3-9/16

      3.5625

  5. Use the ‘Calculate’ button to complete the calculation, and the ‘Reset’ button to reset the steel weight calculator.

How to Calculate the Weight of Steel

Don’t feel like using the steel weight calculator above? Here’s how to manually calculate the weight of a variety of common steel section types:

How to Calculate the Weight of Steel Sheet

The first step is to determine the volume of the steel sheet, with the equation as follows:

V = L x W x T

When calculating the weight of steel sheet stock, the equation consists of the following elements:

V = Volume

L = The length of the steel sheet

W = The width of the steel sheet

T = The steel sheet’s thickness

Let’s work through an example of a stainless steel (type 304) sheet that has a length of 2m, a width of 1m, and a thickness of 25mm.

Because we’re using a density of 7930 kg/m3 for the calculation, we’ll need to convert the dimensions in this example to meters. The length and width of the sheet are already in meters, so we don’t need to change these, but the 25mm thickness should be 0.025 (the width dimension converted to meters).

Here’s how the calculation works:

Volume = 2 x 1 x 0.025
Volume = 0.05m3

Stainless Steel Type 304 Density = 7930 kg/m3

If we multiply the 0.053 volume figure by the 7930 kg/m3 density figure, we end up with a weight of 396.5 kg or 874.13 lbs.

Alternatively, use our steel weight calculator above to work out the weight of steel sheet stock quickly and easily.

How to Calculate the Weight of Steel Plate

You can work out the weight of steel plate using the same process outlined above for calculating the weight of a steel sheet.

The same formula is used to first determine the volume of the steel sheet:

V = L x W x T

The formula consists of the following elements:

V = Volume

L = The length of the steel sheet

W = The width of the steel sheet

T = The steel sheet’s thickness

We’ve shown a worked example of this equation in the section above.

How to Calculate the Weight of Steel Bar

The first step is to determine the volume of the steel bar, with the equation as follows for round bar stock:

V = π r2 l

When calculating the weight of a steel bar, the equation consists of the following elements:

V = Volume

π = Pi, or 3.142

r = The radius of the steel bar, squared

l = The length of the steel bar

Let’s work through an example of a stainless steel (type 304) round bar that has a diameter of 50mm and a length of 1-meter.

In this case, we’ll be multiplying the Pi figure (3.142) by the radius squared (25mm for this example, or half the diameter value), and finally, we’ll be multiplying the length of the steel round bar (1m).

Because we’re using a density of 7930 kg/m3 for the calculation, we’ll need to convert the dimensions in this example to meters. The length of the bar is already 1-meter, so we don’t need to change this, but the 25mm radius should be 0.025 (the radius dimension converted to meters).

Here’s how the calculation works:

Volume = (3.142 x (0.025 x 0.025)) x 1
Volume = 0.00196m3

Stainless Steel Type 304 Density = 7930 kg/m3

If we multiply the 0.00196m3 volume figure by the 7930 kg/m3 density figure, we end up with a weight of 15.54 kg or 34.26 lbs.

How to Calculate the Weight of Steel Pipe

Step One

The first step is to treat the pipe as if it’s a solid round bar, and so we’ll use the following equation to calculate the overall volume (disregarding the hollow part of the pipe for now):

V = π r2 l

The above equation consists of the following elements:

V = Volume

π = Pi, or 3.142

r = The radius of the steel bar, squared

l = The length of the steel bar

Let’s work through an example of a stainless steel (type 304) pipe that has a diameter of 50mm and a length of 1-meter.

In this case, we’ll be multiplying the Pi figure (3.142) by the radius squared (25mm for this example, or half the diameter value), and finally, we’ll be multiplying the length of the steel round bar (1m).

Because we’re using a density of 7930 kg/m3 for the calculation, we’ll need to convert the dimensions in this example to meters. The length of the bar is already 1-meter, so we don’t need to change this, but the 25mm radius should be 0.025 (the radius dimension converted to meters).

Here’s how the calculation works:

Overall Pipe Volume = (3.142 x (0.025 x 0.025)) x 1
Overall Pipe Volume = 0.00196m3

Step Two

The second step is to calculate the volume of the hollow section of the steel pipe, and we’ll use the same equation that we used in step one above.

Let’s assume that the 50mm pipe from step one has a thickness of 10mm, meaning that the diameter of the hollow section is 30mm (50mm minus two sides measuring 10mm in thickness each).

As above, we’ll need to convert the dimensions to meters given that we’re using a metric density of 7930 kg/m3 for the steel in the calculation. To suit the calculation, we’ll take the radius (half the diameter) and convert this to meters giving us a value of 0.015.

Here’s how the second part of the calculation works:

Hollow Section Volume = (3.142 x (0.015 x 0.015)) x 1
Hollow Section Volume = 0.00070m3

Step Three

Next, we need to subtract the volume of the hollow section of pipe from the overall pipe’s volume.

For example:

Total Volume = Overall Pipe Volume – Hollow Section Volume
Total Volume = 0.00126m3

If we multiply the 0.00126m3 volume figure by the 7930 kg/m3 density figure, we end up with a weight of 9.99 kg or 22.02 lbs for the steel pipe.


Steel Density Information – Common Types of Steel

The following table shows the density data in both metric and imperial measurements for common types of steel:

Steel Density Information

Steel Type

Density

Metric

Imperial

Mild Steel

7850 kg/m3

490.07 lb/ft3

Stainless Steel (301)

7880 kg/m3

491.95 lb/ft3

Stainless Steel (302)

8030 kg/m3

501.31 lb/ft3

Stainless Steel (303)

8030 kg/m3

501.31 lb/ft3

Stainless Steel (304)

7930 kg/m3

495.07 lb/ft3

Stainless Steel (309)

7900 kg/m3

493.20 lb/ft3

Stainless Steel (310)

7900 kg/m3

493.20 lb/ft3

Stainless Steel (316)

7990 kg/m3

498.81 lb/ft3

Stainless Steel (321)

7900 kg/m3

493.20 lb/ft3

Stainless Steel (409)

7610 kg/m3

475.09 lb/ft3

Stainless Steel (410)

7800 kg/m3

486.95 lb/ft3

Stainless Steel (416)

7750 kg/m3

483.83 lb/ft3

Stainless Steel (420)

7800 kg/m3

486.95 lb/ft3

Stainless Steel (430)

7750 kg/m3

483.83 lb/ft3

Stainless Steel (440)

7800 kg/m3

486.95 lb/ft3


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