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Hex Bar Weight Calculator


From aluminum to stainless steel, our handy calculator makes it quick and easy to calculate the weight of hex bar stock.

For technical guidance, please refer to the user guide below the calculator. We’ve also included a series of helpful reference tables below that display additional hex bar weight information, for example, on a per foot or meter basis.

Calculate Hex Bar Weight:
toolcrowd hex bar weight calculator example image
Total Weight = 0.00 lbs / 0.00 kg

How to Use the Hex Bar Weight Calculator

  1. Use the ‘Hex Bar Material’ box to choose a material.

    The ‘Density’ box will automatically be populated based on your material choice (unless you choose ‘Other’, with this option allowing you to use the calculator with other hex bar materials not already included).

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

    !

    Note: If you choose ‘Other’ as a material, you’ll need to insert a density (on a kg/m3 basis) for the calculator to function.

  2. Use the ‘Number of Bars’ box to specify how many hex bar units to include in the calculation.
  3. Use the ‘Hex Bar Length (L)’ and ‘Hex Bar Width (AF)’ boxes to specify the size of hex bar to include in the specification.

    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 hex bar inch widths as decimals that you can use in the calculator:


    • Hex Bar Width – 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

  4. Use the ‘Calculate’ button to complete the calculation, and the ‘Reset’ button to reset the hex bar weight calculator.

How Is Hex Bar Measured?

Hex bar stock typically has two dimensions. The thickness or width of the hex bar is measured as the distance between the opposite flat faces of the bar, while the length is the measurement from one end of the bar to the other.

An example image showing the ‘cross flats’ width measurement of a hex bar is shown in the above calculator.


How to Calculate the Weight of Hex Bar

The first step is to determine the volume of the hexagonal bar, with the equation as follows:

V = (((√3/2) x AFW2) x L)

When calculating the weight of hex bar stock, the equation consists of the following elements:

V = Volume

AFW = The ‘across flats’ width of the hex bar

L = The length of the hex bar

Let’s work through an example of a stainless steel (type 304) hex bar that has an ‘across flats’ width of 50mm and a length of 1-meter.

In this case, we’ll be dividing the square root of 3 (approximately 1.73) by 2 before multiplying this figure by the across-flats width (50mm) squared, before finally multiplying this figure by the length of the steel hex 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 50mm width should be 0.05 (the width dimension converted to meters).

Here’s how the calculation works:

Volume = (((1.73÷2)×(0.05×0.05)×1))
Volume = 0.002165m3

Stainless Steel Type 304 Density = 7930 kg/m3

If we multiply the 0.0021653 volume figure by the 7930 kg/m3 density figure, we end up with a weight of 17.17 kg or 37.85 lbs.

Alternatively, use our hex bar weight calculator above to work out the weight of hexagonal bar stock quickly and easily.


Hex Bar Reference Weight Tables

Steel Hex Bar – Reference Weight Table (Imperial)

For those in the United States, or for anyone who prefers working with imperial sizing, here’s a summary of the approximate weight of both stainless and mild steel hex bar across a variety of imperial widths (across flats):

[Scroll table if necessary].

Steel Hex Bar – Imperial Weight Table

Hex Bar Width – Across Flats (inches)

Stainless Steel Hex Bar
(Type 304)

Mild Steel Hex Bar

Approximate Weight per Foot

Approximate Weight per 20′ Bar

Approximate Weight per Foot

Approximate Weight per 20′ Bar

1/8

0.05 lbs

0.56 lbs

0.05 lbs

0.55 lbs

1/4

0.19 lbs

2.23 lbs

0.18 lbs

2.21 lbs

1/2

0.74 lbs

8.92 lbs

0.74 lbs

8.83 lbs

3/4

1.67 lbs

20.06 lbs

1.66 lbs

19.86 lbs

1

2.97 lbs

35.67 lbs

2.94 lbs

35.31 lbs

1-1/8

3.76 lbs

45.14 lbs

3.72 lbs

44.69 lbs

1-1/4

4.64 lbs

55.73 lbs

4.60 lbs

55.17 lbs

1-1/2

6.69 lbs

80.25 lbs

6.62 lbs

79.45 lbs

1-3/4

9.10 lbs

109.24 lbs

9.01 lbs

108.13 lbs

2

11.89 lbs

142.68 lbs

11.77 lbs

141.24 lbs

2-1/8

13.42 lbs

161.07 lbs

13.29 lbs

159.44 lbs

2-1/4

15.05 lbs

180.57 lbs

14.90 lbs

178.75 lbs

2-1/2

18.58 lbs

222.93 lbs

18.39 lbs

220.68 lbs

2-3/4

22.48 lbs

269.75 lbs

22.25 lbs

267.02 lbs

3

26.75 lbs

321.02 lbs

26.48 lbs

317.78 lbs

3-1/8

29.03 lbs

348.33 lbs

28.73 lbs

344.81 lbs

3-1/4

31.40 lbs

376.75 lbs

31.08 lbs

372.95 lbs

3-1/2

36.41 lbs

436.94 lbs

36.04 lbs

432.53 lbs

3-3/4

41.80 lbs

501.59 lbs

41.38 lbs

496.53 lbs

4

47.56 lbs

570.70 lbs

47.08 lbs

564.94 lbs

4-1/8

50.58 lbs

606.93 lbs

50.07 lbs

600.80 lbs

4-1/4

53.69 lbs

644.27 lbs

53.15 lbs

637.77 lbs

4-1/2

60.19 lbs

722.29 lbs

59.58 lbs

715.01 lbs

4-3/4

67.06 lbs

804.78 lbs

66.39 lbs

796.66 lbs

5

74.31 lbs

891.72 lbs

73.56 lbs

882.72 lbs

5-1/8

78.07 lbs

936.86 lbs

77.28 lbs

927.41 lbs

5-1/4

81.93 lbs

983.12 lbs

81.10 lbs

973.20 lbs

5-1/2

89.92 lbs

1078.98 lbs

89.01 lbs

1068.10 lbs

5-3-04

98.27 lbs

1179.30 lbs

97.28 lbs

1167.40 lbs

6

107.01 lbs

1284.08 lbs

105.93 lbs

1271.12 lbs

Steel Hex Bar – Reference Weight Table (Metric)

For those residing outside of the United States, or for anyone who prefers working with metric sizing, here’s a summary of the approximate weight of both stainless and mild steel hex bar across a variety of metric widths (across flats):

[Scroll table if necessary].

Steel Hex Bar Bar – Metric Weight Table

Hex Bar Width – Across Flats (mm)

Stainless Steel Hex Bar
(Type 304)

Mild Steel Hex Bar

Approximate Weight per Meter

Approximate Weight per 3m Bar

Approximate Weight per Meter

Approximate Weight per 3m Bar

2mm

0.03 kg

0.08 kg

0.03 kg

0.08 kg

3mm

0.06 kg

0.19 kg

0.06 kg

0.18 kg

4mm

0.11 kg

0.33 kg

0.11 kg

0.33 kg

5mm

0.17 kg

0.52 kg

0.17 kg

0.51 kg

6mm

0.25 kg

0.74 kg

0.24 kg

0.73 kg

7mm

0.34 kg

1.01 kg

0.33 kg

1.00 kg

8mm

0.44 kg

1.32 kg

0.44 kg

1.31 kg

10mm

0.69 kg

2.06 kg

0.68 kg

2.04 kg

12mm

0.99 kg

2.97 kg

0.98 kg

2.94 kg

14mm

1.35 kg

4.04 kg

1.33 kg

4.00 kg

15mm

1.55 kg

4.64 kg

1.53 kg

4.59 kg

16mm

1.76 kg

5.27 kg

1.74 kg

5.22 kg

18mm

2.23 kg

6.68 kg

2.20 kg

6.61 kg

20mm

2.75 kg

8.24 kg

2.72 kg

8.16 kg

22mm

3.32 kg

9.97 kg

3.29 kg

9.87 kg

24mm

3.96 kg

11.87 kg

3.92 kg

11.75 kg

25mm

4.29 kg

12.88 kg

4.25 kg

12.75 kg

28mm

5.38 kg

16.15 kg

5.33 kg

15.99 kg

30mm

6.18 kg

18.54 kg

6.12 kg

18.36 kg

32mm

7.03 kg

21.10 kg

6.96 kg

20.88 kg

34mm

7.94 kg

23.82 kg

7.86 kg

23.58 kg

36mm

8.90 kg

26.70 kg

8.81 kg

26.43 kg

40mm

10.99 kg

32.96 kg

10.88 kg

32.63 kg

45mm

13.91 kg

41.72 kg

13.77 kg

41.30 kg

50mm

17.17 kg

51.51 kg

17.00 kg

50.99 kg

55mm

20.77 kg

62.32 kg

20.56 kg

61.69 kg

60mm

24.72 kg

74.17 kg

24.47 kg

73.42 kg

65mm

29.02 kg

87.05 kg

28.72 kg

86.17 kg

70mm

33.65 kg

100.95 kg

33.31 kg

99.94 kg

75mm

38.63 kg

115.89 kg

38.24 kg

114.72 kg

80mm

43.95 kg

131.86 kg

43.51 kg

130.53 kg

85mm

49.62 kg

148.85 kg

49.12 kg

147.35 kg

90mm

55.63 kg

166.88 kg

55.07 kg

165.20 kg

95mm

61.98 kg

185.94 kg

61.35 kg

184.06 kg

100mm

68.68 kg

206.03 kg

67.98 kg

203.95 kg

105mm

75.72 kg

227.15 kg

74.95 kg

224.85 kg

110mm

83.10 kg

249.29 kg

82.26 kg

246.78 kg

115mm

90.82 kg

272.47 kg

89.91 kg

269.72 kg

120mm

98.89 kg

296.68 kg

97.90 kg

293.69 kg

125mm

107.31 kg

321.92 kg

106.22 kg

318.67 kg


Quick Reference Information

MS Hex Bar Weight

Mild steel hex bar has a typical density of 7850 kg/m3 (490 lbs/ft3).

In 20-foot lengths, mild steel hex bar weighs 14.71 lbs at a 1/2″ or 58.85 lbs at a 1″ width (across flats).

In metric sizes, a 12mm wide, 3-meter mild steel hex bar weighs 2.94 kg, while a 25mm wide bar of the same length weighs 12.75 kg.

SS Hex Bar Weight

Type 304 stainless-steel hex bar has a typical density of 7930 kg/m3 (495 lbs/ft3).

A 20-foot, 1/2″ wide stainless steel hex bar weighs 14.86 lbs, or 59.45 lbs at a 1″ width (across flats).

In metric sizes, a 12mm wide, 3-meter stainless steel hex bar weighs 2.97 kg, while a 25mm wide bar weighs 12.88 kg.

Aluminum Hex Bar Weight

6061 aluminum hex bar has a typical density of 2710 kg/m3 (169.18 lbs/ft3).

A 20-foot, 1/2″ wide 6061 aluminum hex bar weighs 5.06 lbs, or 20.24 lbs at a 1″ width (across flats).

In metric sizes, a 12mm wide, 3-meter 6061 aluminum hex bar weighs 1.01 kg, while a 25mm wide bar weighs 4.38 kg.

Brass Hex Bar Weight

Brass hex bar has a typical density of 8525 kg/m3 (532.20 lbs/ft3).

A 20-foot, 1/2″ wide brass hex bar weighs 15.98 lbs, or 63.91 lbs at a 1″ width (across flats).

In metric sizes, a 12mm wide, 3-meter brass hex bar weighs 3.19 kg, while a 25mm wide bar weighs 13.84 kg.

Titanium Hex Bar Weight

Titanium hex bar has a typical density of 4506 kg/m3 (281.30 lbs/ft3).

A 20-foot, 1/2″ wide titanium hex bar weighs 8.44 lbs, or 33.78 lbs at a 1″ width (across flats).

In metric sizes, a 12mm wide, 3-meter titanium hex bar weighs 1.69 kg, while a 25mm wide bar weighs 7.32 kg.


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