Concrete Calculator

Concrete Calculator: Your Project Partner


Our Concrete Calculator simplifies your construction projects by accurately estimating the amount of concrete you need for slabs, footings, walls, columns, and tubes. Whether you're laying a new patio, setting a foundation, or constructing a wall, our tool ensures you get the right calculations every time.

How It Works

  1. Slabs, Square Footings, or Walls: Enter the length, width, and thickness or height of your project area in your preferred units to calculate the volume of concrete needed.
  2. Hole, Column, or Round Footings: Specify the diameter and height of the area to get the volume of concrete required for circular footings or columns.
  3. Circular Slab or Tube: For projects like circular slabs or tubes, input the outer and inner diameters along with the length or height to determine the concrete volume.


Rectangular Slab Volume: \( \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \)

Circular Volume: \( \text{Volume} = \pi \times \left( \frac{\text{Diameter}}{2} \right)^2 \times \text{Height} \)

Tube Volume: \( \text{Volume} = \pi \times \left( \frac{\text{Outer Diameter}^2 - \text{Inner Diameter}^2}{4} \right) \times \text{Height} \)


From homeowners laying a backyard patio to construction professionals erecting a new building, our calculator is designed for anyone needing a precise concrete volume estimate.

Frequently Asked Questions

How is concrete calculated?
Concrete is calculated by multiplying the length, width, and thickness of the area where it will be poured and then converting this volume into cubic yards or meters.
How much concrete for a 10x10 slab?
For a slab of 4 inches thick, you'll need approximately 1.23 cubic yards of concrete.
What is M10 concrete ratio?
M10 concrete is a mix ratio of 1:3:6 (cement, sand, aggregate), suitable for non-structural works like pathways.
How to calculate m3 of concrete?
To calculate the volume in cubic meters, multiply the project's length, width, and height in meters. The formula is \( \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \).
What is the best formula for concrete?
The best formula for concrete depends on the specific requirements of the project. A common mix for general construction is 1:2:4 (cement, sand, aggregate).
How much is 1,000 sq ft of concrete?
For an area of 1,000 square feet with a thickness of 4 inches, approximately 12.3 cubic yards of concrete would be required.
How to calculate cubic feet?
To calculate volume in cubic feet, use the formula \( \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \), with all dimensions in feet.
What is M25 in RMC?
M25 in Ready-Mix Concrete (RMC) is a high-strength mix typically used for construction with significant load-bearing requirements, with a mix ratio of 1:1:2 (cement, sand, aggregate).
What is RMC ratio?
The RMC ratio varies depending on the strength requirements of the concrete. Common mixes include M10, M15, M20, M25, etc., each designed for different uses and load-bearing capacities.
What is the PCC ratio?
Plain Cement Concrete (PCC) ratios, such as 1:2:4 or 1:3:6 (cement, sand, aggregate), are chosen based on the structural requirements and the load the concrete needs to bear.
What are the 7 grades of concrete?
The common grades of concrete include M10, M15, M20, M25, M30, M35, and M40. Each grade is suitable for different types of construction based on strength and durability requirements.
What is PCC in construction?
PCC stands for Plain Cement Concrete, which is used as the base layer before laying Reinforced Cement Concrete (RCC) in construction projects. It helps in providing a level surface and protecting the reinforcement from corrosion.