Metal weight

Round bar Ø80 mm weight

Steel Round bar Ø80 weighs 39.46 kg/m. A 6 m bar weighs 236.8 kg and a 12 m bar 473.5 kg. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre39.46kg/m
6 m bar236.8kg
12 m bar473.5kg
Metres per tonne25.3m
Painting surface0.251m²/m
Ø 80 mm
Diameter
80 mm
Section area
50.27 cm²
Outer surface
0.251 m²/m
Outer surface
0.251 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m39.46 kg39.86 kg13.57 kg
2 m78.92 kg79.72 kg27.14 kg
3 m118.38 kg119.58 kg40.72 kg
4 m157.83 kg159.44 kg54.29 kg
5 m197.29 kg199.30 kg67.86 kg
6 m236.75 kg239.16 kg81.43 kg
8 m315.67 kg318.88 kg108.57 kg
10 m394.58 kg398.61 kg135.72 kg
12 m473.50 kg478.33 kg162.86 kg

How it was calculated

The weight is the section area multiplied by the material density:

kg/m = d² × 0.006165, where d is the diameter in mm.

For Round bar Ø80, the section area is 50.27 cm², so 1 metre = 50.27 × 0.785 = 39.458 kg.

The real weight can differ by a few percent because of rolling tolerances. For other materials or lengths use the calculator.

Other round bar sizes

Round bar Ø40Round bar Ø45Round bar Ø50Round bar Ø55Round bar Ø60Round bar Ø65Round bar Ø70Round bar Ø75Round bar Ø80Round bar Ø90Round bar Ø100Round bar Ø110Round bar Ø120Round bar Ø130Round bar Ø140Round bar Ø150Round bar Ø160Full table →

Working out a whole order?

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Frequently asked questions

How much does one metre of Round bar Ø80 weigh?

One metre of steel Round bar Ø80 weighs 39.46 kg.

How much does a 6 m bar of Round bar Ø80 weigh?

A 6 m bar weighs 236.8 kg and a 12 m bar 473.5 kg.

How many metres of Round bar Ø80 are in one tonne?

One tonne contains about 25.3 metres.