ft² to m³ needs thickness. A 100 ft² concrete slab at 4 in thickness is about 0,944 m³.
ft²
in
Volume
| Area | Thickness | Volume |
|---|---|---|
| 100 ft² | 4 in | 0.9439 m³ |
| 500 ft² | 4 in | 4.7195 m³ |
| 100 ft² | 6 in | 1.4158 m³ |
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Open AI assistant →Formula
m³ = ft² × 0.09290304 × thickness inches × 0.0254. Without thickness, area cannot become volume.
For concrete slabs and poured layers
Most ft²-to-m³ questions are really slab-volume questions. Use the finished surface area and the actual slab or layer thickness. For example, 120 ft² at 5.5 in is about 1.557 m³. A request such as “1,000 sq ft in cubic metres” has no single answer until thickness is known. Beams, thickened edges and footings should be calculated as separate volumes and added to the slab instead of being hidden inside one average thickness.