How many pieces of rebar in a ton

Divide the weight of a ton by the weight of one bar. A 20 ft #4 bar weighs 13.36 lb, so a short ton holds about 150 of them. The chart below does this for every size.

US bars #3 to #18feet, inches, lb Metric barsmeters, kg

Waste or laps, %

Price (optional)

Bar size

Length, ft

Inches

Quantity

Weight0.00 lb

#5 bar: 1.043 lb/ft (1.552 kg/m). One 20 ft bar: 20.86 lb.

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Total weight

0.00 lb

0.000 short tons (2,000 lb)

Kilograms: 0.00
Metric tons: 0.000
Total length: 0.0 ft
Bars: 0
Material cost

Bars in a short ton, US sizes

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Number of rebar bars in one short ton, by size and bar length
Bar	lb per ft	Feet per ton	20 ft bars	40 ft bars	60 ft bars
#3	0.376	5,319	266.0	133.0	88.7
#4	0.668	2,994	149.7	74.9	49.9
#5	1.043	1,918	95.9	47.9	32.0
#6	1.502	1,332	66.6	33.3	22.2
#7	2.044	978	48.9	24.5	16.3
#8	2.670	749	37.5	18.7	12.5
#9	3.400	588	29.4	14.7	9.8
#10	4.303	465	23.2	11.6	7.7
#11	5.313	376	18.8	9.4	6.3
#14	7.650	261	13.1	6.5	4.4
#18	13.600	147	7.4	3.7	2.5

A short ton is 2,000 lb. Counts are not rounded, so you can scale them. Source: ASTM A615/A615M, Table 1 (nominal weights). Checked 2026-10-20.

Bars in a metric tonne

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Number of rebar bars in one metric tonne, by size and bar length
Bar	kg per m	Meters per tonne	6 m bars	9 m bars	12 m bars
M10 (US #3)	0.560	1,786	297.6	198.4	148.8
M13 (US #4)	0.994	1,006	167.7	111.8	83.8
M16 (US #5)	1.552	644	107.4	71.6	53.7
M19 (US #6)	2.235	447	74.6	49.7	37.3
M22 (US #7)	3.042	329	54.8	36.5	27.4
M25 (US #8)	3.973	252	41.9	28.0	21.0
M29 (US #9)	5.060	198	32.9	22.0	16.5
M32 (US #10)	6.404	156	26.0	17.4	13.0
M36 (US #11)	7.907	126	21.1	14.1	10.5
M43 (US #14)	11.380	88	14.6	9.8	7.3
M57 (US #18)	20.240	49	8.2	5.5	4.1
6 mm	0.222	4,505	750.9	500.6	375.5
8 mm	0.395	2,534	422.4	281.6	211.2
10 mm	0.617	1,622	270.3	180.2	135.2
12 mm	0.888	1,126	187.7	125.2	93.9
14 mm	1.208	828	137.9	91.9	69.0
16 mm	1.578	634	105.6	70.4	52.8
20 mm	2.466	405	67.6	45.1	33.8
25 mm	3.853	260	43.3	28.8	21.6
28 mm	4.834	207	34.5	23.0	17.2
32 mm	6.313	158	26.4	17.6	13.2
40 mm	9.865	101	16.9	11.3	8.4

How to work it out

Bars in a ton equals the weight of a ton divided by the weight of one bar. The weight of one bar is the pounds per foot times its length.

Example: a 40 ft #6 bar weighs 40 × 1.502, or 60.08 lb. A short ton holds 2,000 / 60.08, or 33.3 of them. Round down to whole bars when you load a truck, and expect a few percent of difference from the mill weight.

Ton, short ton and tonne

In US trade, a ton is the short ton of 2,000 lb. A metric tonne is 1,000 kg, or 2,204.6 lb. Many quotes in the US also use CWT, which is 100 lb. Check the unit on each quote before you compare prices.

The calculator above shows your total in both. Enter a price per lb or per ton to see a material cost.

Rebar weight by size

Each page has the weight per foot or meter, the weight of common bar lengths, and the calculator set to that bar.