50 mm rebar weight
15.400 kg/m · 10.348 lb/ft
50 mm rebar has a nominal diameter of 50 mm and a cross-sectional area of 1963 mm².
50 mm rebar weight calculator
Weight of standard bar lengths
| Bars | 6 m (kg) | 12 m (kg) |
|---|---|---|
| 1 | 92.4 | 184.8 |
| 10 | 924.0 | 1,848.0 |
| 50 | 4,620.0 | 9,240.0 |
| 100 | 9,240.0 | 18,480.0 |
Bars per tonne
| Bar length | Bars per tonne |
|---|---|
| 6 m | 10.8 |
| 9 m | 7.2 |
| 12 m | 5.4 |
One tonne of 50 mm rebar is 65 m per tonne. Use this to turn a weight on a delivery note into a bar count.
How the weight is calculated
Area = π ÷ 4 × 50² = 1,963.5 mm². Weight per metre = area × 7850 kg/m³ = 1,963.5 × 10⁻⁶ m² × 7850 = 15.413 kg/m. The d² ÷ 162 rule gives 2500 ÷ 162 = 15.432 kg/m.
Deformed bars and TMT bars are sold by nominal diameter and nominal mass; the ribs are already allowed for, and standards accept a small mass tolerance per bar. See the rebar weight formula guide.
50 mm rebar per square metre of slab
Weight of 50 mm rebar in a slab or wall for common spacings, for one layer in one direction and for bars both ways. Add laps, hooks and chairs on top.
| Spacing (centres) | One direction (kg/m²) | Both directions (kg/m²) |
|---|---|---|
| 100 mm | 154.00 | 308.00 |
| 125 mm | 123.20 | 246.40 |
| 150 mm | 102.67 | 205.33 |
| 200 mm | 77.00 | 154.00 |
| 250 mm | 61.60 | 123.20 |
| 300 mm | 51.33 | 102.67 |
Compared with nearby sizes
| Bar | kg/m | lb/ft | vs this bar |
|---|---|---|---|
| 32 mm rebar | 6.310 | 4.240 | −59 % |
| 40 mm rebar | 9.860 | 6.626 | −36 % |
| 50 mm rebar | 15.400 | 10.348 | — |
Bars this heavy are used in heavily loaded columns, transfer beams, piles, bridge decks and large foundations. The nearest US bar is #14 rebar (43 mm, 11.384 kg/m).
Frequently asked questions
What is the weight of 50 mm rebar per metre?
50 mm rebar weighs 15.400 kg/m (10.348 lb/ft). By the rule of thumb d squared over 162: 50 x 50 / 162 = 15.432 kg/m.
How much does a 12 m bar of 50 mm rebar weigh?
184.80 kg (15.400 kg/m × 12 m). A 6 m bar weighs 92.40 kg.
How many 12 m bars of 50 mm rebar are in a tonne?
About 5.4 bars, or 65 m per tonne.
What is the US equivalent of 50 mm rebar?
The nearest US bar is #14 rebar (43 mm, 11.384 kg/m). Check the steel area in the design before substituting one for the other.
How is the weight of 50 mm rebar calculated?
Area = π ÷ 4 × 50² = 1,963.5 mm². Weight per metre = area × 7850 kg/m³ = 1,963.5 × 10⁻⁶ m² × 7850 = 15.413 kg/m. The d² ÷ 162 rule gives 2500 ÷ 162 = 15.432 kg/m.
How much 50 mm rebar is needed per square metre at 150 mm spacing?
One layer at 150 mm centres needs 102.67 kg/m² in one direction, 205.33 kg/m² for bars both ways, plus laps.
Other bar sizes
6 mm rebar · 8 mm rebar · 10 mm rebar · 12 mm rebar · 14 mm rebar · 16 mm rebar · 20 mm rebar · 25 mm rebar · 28 mm rebar · 32 mm rebar · 40 mm rebar
Full rebar weight chart · Steel weight calculator
Data adapted from Wikipedia, "Rebar" (CC BY-SA 4.0).