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Rebar Sizes and Weights Chart
Nominal diameters, mass per metre and cross-sectional areas for deformed reinforcing bar — the reference every estimator needs.
Metric rebar (BS 4449 / ISO 6935 / DIN 488)
| Ø (mm) | Mass (kg/m) | Area (mm²) |
|---|---|---|
| 8 | 0.395 | 50.3 |
| 10 | 0.617 | 78.5 |
| 12 | 0.888 | 113 |
| 16 | 1.578 | 201 |
| 20 | 2.470 | 314 |
| 25 | 3.854 | 491 |
| 32 | 6.313 | 804 |
| 40 | 9.864 | 1257 |
Imperial rebar (ASTM A615)
| Bar | Ø (in) | Mass (lb/ft) | Area (in²) |
|---|---|---|---|
| #3 | 0.375 | 0.376 | 0.11 |
| #4 | 0.500 | 0.668 | 0.20 |
| #5 | 0.625 | 1.043 | 0.31 |
| #6 | 0.750 | 1.502 | 0.44 |
| #8 | 1.000 | 2.670 | 0.79 |
| #10 | 1.270 | 4.303 | 1.27 |
Multiply mass per metre × total length for tonnage — see our BBS tonnage guide. We supply all sizes as TMT rebar or cut & bend.
Frequently asked questions
What is the weight of 16mm rebar per metre?
16mm deformed rebar weighs 1.578 kg/m (nominal), with a cross-sectional area of 201 mm².
How do metric and imperial bar sizes compare?
A #5 bar (0.625 in) is close to 16mm; #8 (1 in) is close to 25mm. Always confirm against the ordered standard as areas differ slightly.
Which standards define these sizes?
BS 4449, ISO 6935 and DIN 488 for metric; ASTM A615/A706 for imperial (#3–#18) bars.
Need mill-certified reinforcement in bulk?
Steel Pro Rebar Germany Gmbh exports rebar, mesh, coils, cut & bend and specialty reinforcement worldwide with EN 10204 3.1 MTCs.
Request a bulk quote →WhatsApp: +49 163 1141934