Tonne to Square Metre Converter — Asphalt Coverage
Coverage depends on thickness, so there is no single tonne-to-square-metre figure. At 50 mm one tonne covers 8.6 m². The table below gives every common thickness.
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Coverage per tonne by thickness
| Thickness | m² per tonne | tonnes per 100 m² | tonnes per 1,000 m² |
|---|---|---|---|
| 20 mm | 21.53 | 4.65 | 46.5 |
| 25 mm | 17.22 | 5.81 | 58.1 |
| 30 mm | 14.35 | 6.97 | 69.7 |
| 40 mm | 10.76 | 9.29 | 92.9 |
| 50 mm | 8.61 | 11.61 | 116.1 |
| 60 mm | 7.18 | 13.94 | 139.4 |
| 70 mm | 6.15 | 16.26 | 162.6 |
| 80 mm | 5.38 | 18.58 | 185.8 |
| 100 mm | 4.31 | 23.23 | 232.3 |
| 150 mm | 2.87 | 34.84 | 348.4 |
| 200 mm | 2.15 | 46.45 | 464.5 |
Formulas
m² per tonne = 1,000 ÷ (density kg/m³ × thickness m)
tonnes per m² = density (kg/m³) × thickness (m) ÷ 1,000
tonnes per m² = density (kg/m³) × thickness (m) ÷ 1,000
Full calculator
If you need tonnage rather than a unit conversion, use the full calculator — it applies your mix density and returns every unit at once.
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