Pile Cap Calculator — m, m³, rebar
How to use this calculator
A pile cap is a thick reinforced concrete block that sits on top of a group of piles to distribute column loads. Enter the cap shape, number of caps, dimensions (m/cm/mm), depth, and number of piles per cap. Select your currency below.
Cost — ready-mix per m³, 50 kg bags, or 25 kg bags.
Reinforcement — bottom mat with bars in both directions per EC2 §9.8.1, 75 mm cover over piles.
Labor — rate per cap, per m³, or flat price.
Saved Calculations
| Time | Caps | Size | Piles | Vol m³ | Cost | Rebar | Labor | Total |
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How to Calculate Concrete for Pile Caps (Metric)
A pile cap is a thick reinforced concrete block placed on top of a group of piles to transfer and distribute structural loads. This calculator estimates concrete volume in cubic meters, number of bags, weight, bottom rebar mat, and cost for square or rectangular pile caps with 2, 3, 4, 6, or 9 pile configurations. Enter dimensions in m, cm, or mm.
Reinforcement per EN 1992-1-1 (Eurocode 2)
Pile caps require a bottom reinforcement mat in both directions per EC2 §9.8.1, placed with 75 mm clear cover above pile tops. Typical bar sizes are Ø12 to Ø20 at 100–250 mm on center. Standard bar length is 6 m or 12 m. Concrete density: 2 400 kg/m³.
Formulas
Volume = Width × Length × Depth × Number of caps × (1 + Waste%). Rebar: bars per direction = span / spacing + 1, in both directions.
