Rebar Weight Chart by Diameter and Length

A rebar weight chart is an important reference for contractors, engineers, and project owners when calculating the required reinforcement steel for residential, commercial, and construction projects.

Knowing the theoretical weight per meter allows you to convert rebar lengths into kilograms or tons and helps in reviewing quantity schedules and supplier quotations.

Rebar Weight Chart by Diameter

Rebar Diameter	Approx. Weight per Meter	Approx. Weight per 12 m Bar
6 mm	0.222 kg/m	2.664 kg
8 mm	0.395 kg/m	4.740 kg
10 mm	0.617 kg/m	7.404 kg
12 mm	0.888 kg/m	10.656 kg
14 mm	1.208 kg/m	14.496 kg
16 mm	1.578 kg/m	18.936 kg
18 mm	2.000 kg/m	24.000 kg
20 mm	2.469 kg/m	29.628 kg
22 mm	2.984 kg/m	35.808 kg
25 mm	3.858 kg/m	46.296 kg
28 mm	4.834 kg/m	58.008 kg
32 mm	6.313 kg/m	75.756 kg
36 mm	7.994 kg/m	95.928 kg
40 mm	9.877 kg/m	118.524 kg

How Is Rebar Weight Calculated?

The approximate theoretical weight of rebar can be calculated using:

Weight per meter (kg/m) ≈ Diameter² ÷ 162

The diameter is entered in millimeters.

For example, for 16 mm rebar:

16 × 16 ÷ 162 ≈ 1.58 kg/m

A 12-meter bar would therefore weigh approximately:

1.58 × 12 ≈ 18.94 kg

How to Calculate the Weight of a Rebar Quantity

The total theoretical weight can be calculated using:

Total weight = Number of bars × Bar length × Weight per meter

For example, 100 bars of 16 mm rebar with a length of 12 meters:

100 × 12 × 1.578 ≈ 1,893.6 kg

This is approximately 1.89 tons based on the theoretical weight.

Rebar Weight per Ton

Diameter	Approx. Weight per Meter	Approx. Meters per Ton
8 mm	0.395 kg	2,532 m
10 mm	0.617 kg	1,621 m
12 mm	0.888 kg	1,126 m
14 mm	1.208 kg	828 m
16 mm	1.578 kg	634 m
18 mm	2.000 kg	500 m
20 mm	2.469 kg	405 m
22 mm	2.984 kg	335 m
25 mm	3.858 kg	259 m
28 mm	4.834 kg	207 m
32 mm	6.313 kg	158 m

Is Actual Rebar Weight the Same as Theoretical Weight?

The weights shown in the chart are theoretical weights calculated from the nominal diameter. Actual product weight may vary according to applicable tolerances, specifications, product characteristics, and manufacturer.

For large purchases, it is recommended to refer to the applicable product documentation and verify delivered quantities against the purchase order and invoice.

Why Is a Rebar Weight Chart Important?

Calculating project quantities.
Converting rebar lengths into weight.
Reviewing rebar quantity schedules.
Estimating quantities by diameter.
Comparing supplier quotations.
Checking delivered quantities.
Estimating project steel requirements.

How to Use a Rebar Weight Chart

First identify the rebar diameter, number of bars, and bar length. Then use the corresponding weight per meter to calculate the total weight.

For large projects, the rebar quantity schedule can be used to calculate the total length and weight for each diameter.

Rebar Weight for Houses and Villas

The amount of rebar required varies from one project to another depending on the structural design, dimensions, loads, and project requirements.

Therefore, the required steel quantity should not be estimated from the building area alone. Structural drawings and approved quantity schedules should be used for accurate calculations.

Request a Rebar Quotation via WhatsApp

If you need rebar for your project, send us the required diameters, quantities, and project location via WhatsApp to request an updated quotation.

You can also send your rebar quantity schedule to make it easier to identify the required quantities and sizes.

Click here to request a rebar quotation via WhatsApp

Frequently Asked Questions

How much does 1 meter of 16 mm rebar weigh?

The approximate theoretical weight of 16 mm rebar is 1.578 kg per meter.

How much does a 12-meter rebar weigh?

It depends on the diameter. For example, a 12-meter, 16 mm bar weighs approximately 18.94 kg based on theoretical weight.

How do I calculate rebar weight in tons?

Multiply the number of bars by the bar length and the weight per meter, then divide the result by 1,000 to convert kilograms into tons.

Does the rebar weight chart show actual weight?

The chart provides approximate theoretical weight. Actual weight may vary according to applicable specifications and manufacturing tolerances.

Conclusion

A rebar weight chart helps contractors and project owners calculate quantities, convert lengths into weights, review quantity schedules, and compare supplier quotations.

For an accurate project quantity, always rely on structural drawings and approved rebar quantity schedules rather than building area alone.

Arab Development World Company – Rebar and commercial steel supplier for contractors and project owners in Saudi Arabia.