Metal weight

Rebar Ø25 mm weight

Steel Rebar Ø25 weighs 3.85 kg/m. A 6 m bar weighs 23.1 kg and a 12 m bar 46.2 kg. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre3.85kg/m
6 m bar23.1kg
12 m bar46.2kg
Metres per tonne259.5m
Painting surface0.079m²/m
Ø 25 mm
Nominal diameter
25 mm
Usual bar length
12 m
Section area
4.91 cm²
Metres per tonne
260 m/t
Outer surface
0.079 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m3.85 kg3.89 kg1.33 kg
2 m7.71 kg7.79 kg2.65 kg
3 m11.56 kg11.68 kg3.98 kg
4 m15.41 kg15.57 kg5.30 kg
5 m19.27 kg19.46 kg6.63 kg
6 m23.12 kg23.36 kg7.95 kg
8 m30.83 kg31.14 kg10.60 kg
10 m38.53 kg38.93 kg13.25 kg
12 m46.24 kg46.71 kg15.90 kg

How it was calculated

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

kg/m = d² × 0.006165 (0.00617 rounded), where d is the nominal diameter in mm.

For Rebar Ø25, the section area is 4.91 cm², so 1 metre = 4.91 × 0.785 = 3.853 kg.

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

Other rebar sizes

Rebar Ø8Rebar Ø10Rebar Ø12Rebar Ø14Rebar Ø16Rebar Ø18Rebar Ø20Rebar Ø22Rebar Ø25Rebar Ø28Rebar Ø32Rebar Ø36Rebar Ø40Full table →

Working out a whole order?

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Frequently asked questions

How much does one metre of Rebar Ø25 weigh?

One metre of steel Rebar Ø25 weighs 3.85 kg.

How much does a 6 m bar of Rebar Ø25 weigh?

A 6 m bar weighs 23.1 kg and a 12 m bar 46.2 kg.

How many metres of Rebar Ø25 are in one tonne?

One tonne contains about 259.5 metres.