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Metal weight

Stainless steel round bar weight

Density 0.289 lb/in3 (8 g/cm3), typical of 304.

SheetWeight table
BasisPublished density
Checked2026-09-24
Quick answer

1.25" dia stainless steel round bar weighs 4.256 lb per ft (6.33 kg per m). Weight = cross-section area x length x 0.289 lb per cubic inch.

How much does stainless steel round bar weigh per foot?

SizeArea (sq in)lb per ftkg per m12 ft length, lb
0.25" dia0.04910.1700.252.0
0.375" dia0.11040.3830.574.6
0.5" dia0.19630.6811.018.2
0.625" dia0.30681.0641.5812.8
0.75" dia0.44181.5322.2818.4
1" dia0.78542.7244.0532.7
1.25" dia1.22724.2566.3351.1
1.5" dia1.76716.1289.1273.5
2" dia3.141610.89516.21130.7
2.5" dia4.908717.02425.33204.3
3" dia7.068624.51436.48294.2
4" dia12.566443.58064.85523.0

Formula: area = pi / 4 x d squared; weight = area x length x 0.289 lb/in3. For any other size use the metal weight calculator.

Cut and measure your stock

Frequently asked questions

How do you calculate the weight of stainless steel round bar?

Multiply the cross-section area in square inches by the length in inches and by the density, 0.289 lb per cubic inch for stainless steel (304). For this shape the area is: area = pi / 4 x d squared. A foot of stock is 12 inches, so weight per foot is area x 12 x 0.289.

How does stainless steel compare with steel by weight?

Stainless steel is 2% heavier than carbon steel for the same size: 0.289 lb per cubic inch against 0.2836. The same bar or plate in stainless steel weighs 1.02 times the steel figure.

Other stainless steel shapes

Round bar in other metals

Keep going

Weights from typical published densities; actual alloys and mill tolerances vary by a few percent. Not an engineering load calculation.