Calculadora de concreto
Calculate concrete volume and material requirements for slabs, columns, footings, and walls. Choose a mix ratio and get cement bags, sand, and aggregate quantities with step-by-step solutions.
Calcular
Select a shape, enter dimensions, choose a mix ratio, and click Calculate to see volume and material requirements.
Volume
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Volume em unidades diferentes
Requisitos de materiais
Solução passo a passo
Volume Comparison
Divisão de materiais
Guia do usuário completo
O que é cálculo concreto?
Concrete calculation determines the exact volume of concrete needed and the required materials (cement, sand, aggregate) based on the selected mix ratio. Accurate calculations prevent material waste, control costs, and ensure proper project planning.
6 Calculation Modes
Laje Retangular
V = L × W × T. Pátios, calçadas, pisos.
Laje Circular
V = π × r² × T. Pátios redondos, fundações.
Coluna
V = π × r² × H. Pilares, colunas redondas.
Pé
V = L × W × D. Sapatas de fundação.
Parede
V = L × H × T. Paredes de concreto, barreiras.
Conversão de Volume
Convert between cu ft, cu yd, and m³.
Understanding Mix Ratios
| Ratio | Cimento | Areia | Agregar | Usar |
|---|---|---|---|---|
| 1:2:4 | 1 | 2 | 4 | General construction, foundations |
| 1:1.5:3 | 1 | 1.5 | 3 | Structural elements, higher strength |
| 1:3:6 | 1 | 3 | 6 | Non-structural, mass concrete |
| 1:2:3 | 1 | 2 | 3 | Heavy-duty, structural |
| 1:1:2 | 1 | 1 | 2 | Maximum strength |
Volume Conversions
1 cubic yard = 27 cubic feet
1 cubic foot = 0.0283168 cubic meters
1 cubic yard = 0.764555 cubic meters
Notas importantes
- Add 5–10% extra to account for waste, spillage, and uneven surfaces.
- Round up cement bags to the nearest whole number when purchasing.
- Jardas cúbicas é a unidade padrão usada pelos fornecedores de mistura pronta nos EUA.
- Para projetos estruturais, consulte um engenheiro licenciado para mistura e reforço adequados.