M25 Concrete Calculator
This M25 concrete calculator batches M25 grade concrete — characteristic strength 25 MPa (≈ 3,625 psi) at 28 days — using its nominal 1:1:2 mix. Enter the volume you need and get cement bags, sand and aggregate.
Como usar esta calculadora
- Insira suas dimensões — pés para comprimentos, polegadas para a espessura.
- Ajuste as opções — porcentagem de desperdício, tamanho do saco e o preço local do concreto.
- Leia seus resultados — volume, sacos, peso e custo são atualizados ao vivo enquanto você digita.
A fórmula
M25 nominal mix = 1:1:2 (cement : sand : aggregate), dry volume factor 1.54 Exemplo resolvido: For 1 m³ of M25: 1.54 m³ dry material split 1:1:2 — the calculator returns exact cement bags, sand and aggregate volumes and masses.
M25 concrete is structural-duty concrete — columns, beams, footings and slabs needing 25 MPa. The "M" is for mix; the number is the characteristic cube strength in MPa at 28 days.
As a 25mpa concrete calculator, this page batches the richer 1:1:2 nominal mix — about 11 × 50 kg cement bags per cubic meter. M25 is the common specified grade for RCC members and driveways carrying heavier vehicles.
Nominal mixes are a site convenience, not a lab design: for structural work specified by an engineer, order a designed mix from a ready-mix plant and use this calculator for volume and cost checks.
Perguntas frequentes
Perguntas comuns sobre a m25 concrete calculator.
What does M25 mean?
Mix grade with characteristic compressive strength of 25 MPa (≈ 3,625 psi) at 28 days, tested on 150 mm cubes.
What is the ratio for M25 concrete?
The nominal mix is 1:1:2 (cement : sand : aggregate) by volume. Designed mixes achieving M25 vary by materials and admixtures.
Where is M25 used?
Structural-duty concrete — columns, beams, footings and slabs needing 25 MPa.
How much cement per m³ of M25?
Enter 1 m³ above — the calculator returns the exact 50 kg bag count for the 1:1:2 nominal mix (roughly 11 bags).
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