How Many 10mm Rebar Bars in a Tonne?

How Many 10mm Rebar Bars in a Tonne? The Quick Answer

At the standard 12 m stock length, one tonne of 10 mm rebar contains approximately 135 bars. This comes directly from the DIN 488 / EN 10080 nominal weight of 0.617 kg per metre:

• Mass per 12 m bar = 0.617 × 12 = 7.40 kg
• Bars per tonne = 1,000 ÷ 7.40 = ≈ 135 bars
• Total linear metres per tonne = 135 × 12 = ≈ 1,621 m

The cross-sectional area of 10 mm bar is 78.5 mm², confirming the unit weight via the formula d² × 0.00617. These numbers form the basis for ordering, bundle configuration, and container load planning.

Bars per Tonne at All Common Lengths

The number of bars per tonne changes with bar length. The total linear metres per tonne remains constant at ≈ 1,621 m — only the bar count varies. Here is the full matrix for 10 mm (0.617 kg/m):

The constancy of linear metres per tonne (≈ 1,621 m) across all lengths is a useful cross-check: if your reinforcement schedule gives a total metreage for 10 mm bar, divide by 1,621 to get the tonnage to order before cutting waste.

Practical Applications of the Bars-per-Tonne Figure

Understanding the bars-per-tonne count for 10 mm rebar is critical in several procurement and logistics scenarios:

• Bundle specification: A standard seaworthy export bundle is approximately 2 tonnes. For 12 m bars, that is roughly 270 bars per bundle, each at 7.4 kg — relevant for sling selection and crane capacity planning.
• Container loading: A standard 20 ft container typically holds 12 m bars within its internal length. Knowing 135 bars per tonne at 12 m lets you quickly verify declared quantity against gross weight in shipping documents.
• Reinforcement scheduling: Divide your 10 mm schedule metreage by 1,621 to get net tonnage. Add a cutting waste allowance of 3–5 % for standard layouts before placing your order.
• Mill Test Certificate coverage: Each MTC covers a specific heat/cast batch. Bar count per tonne helps QA teams verify that MTC coverage spans the full delivered quantity.
• Mixed-diameter orders: When ordering multiple diameters in the same container, knowing bars-per-tonne for each size enables accurate gross weight estimation and load-planning per diameter.

Bars per Tonne Compared Across Diameters

Lighter bars yield more bars per tonne; heavier bars yield fewer. Here is how 10 mm compares with the most commonly ordered diameters, all at 12 m:

For the complete weight and section reference across all DIN 488 diameters, see the Rebar Weight Chart kg per Meter. For the 8 mm equivalent calculation, see How Many 8mm Rebar Bars in a Tonne?

Ordering 10mm Rebar from Germany

We supply B500B reinforcing bar in 10 mm across the full range of stock lengths. Orders can be quoted by tonne, by bar count, or by linear metre — whichever unit suits your project. All shipments include a Mill Test Certificate (EN 10204 3.1), Certificate of Origin, and CE/DoP. Seaworthy export packaging and full documentation for customs clearance are standard.

To request a quotation, visit the Request a Quote page. Please include your required diameter, length, quantity, and destination port.