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.
Cómo usar esta calculadora
- Introduzca sus dimensiones — pies para longitudes, pulgadas para el espesor.
- Ajuste las opciones — porcentaje de desperdicio, tamaño de la bolsa y el precio local del hormigón.
- Lea sus resultados — el volumen, las bolsas, el peso y el costo se actualizan en vivo mientras escribe.
La fórmula
M25 nominal mix = 1:1:2 (cement : sand : aggregate), dry volume factor 1.54 Ejemplo resuelto: 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.
Preguntas frecuentes
Preguntas comunes sobre la 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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