A familiar situation
Ermitteln Sie eine erste Bestellmenge für Fundament, Terrasse oder Bodenplatte aus den gemessenen Abmessungen.
How to use this calculator
- Enter length, width, thickness and the remaining inputs.
- Select Calculate to see the answer and its breakdown.
- Keep a scenario, change an input and compare the results.
Use consistent units and check the assumptions below before applying the result.
How concrete is calculated
Estimate concrete volume for a rectangular slab using length, width, and thickness. The output includes cubic meters, cubic yards, and an optional overage allowance; it does not account for irregular edges, subgrade losses, or reinforcement displacement. A 4 m by 3 m slab at 0.10 m thick needs 1.2 m³ before any waste allowance. The calculation validates each input and keeps its stated units explicit. Use an allowance suited to the shape, access, and placement conditions; the default is only an editable planning assumption. This is an estimate for the stated assumptions; confirm measurements and any applicable professional or local standards before relying on it.
volume = length × width × thickness × (1 + allowance)A 4 m by 3 m slab at 0.10 m thick needs 1.2 m³ before any waste allowance.
Assumptions & useful context
The result depends on the values you enter and the method described above. Displayed numbers may be rounded; calculations use the unrounded values. Check that this model matches your situation before relying on it.
Frequently asked questions
How much extra should I order?
Use an allowance suited to the shape, access, and placement conditions; the default is only an editable planning assumption.
Does this convert volume to bags?
No. Bag yield varies by product; use the manufacturer’s stated yield.