Rectangular Slab
V = L × W × DConcrete Calculator
Calculate concrete volume for slabs, footings, columns & beams. Get cement, sand, aggregate quantities with standard mix ratios. Free concrete volume estimat...
Methodology, sources & limitations
This calculator uses a published formula and the values entered in the calculator to generate the result.
- Formula
- V = L × W × H (for slabs); V = πr²h (for columns)
- Jurisdiction & units
- Intended for US, IN, EU, GB, AU, CA. Supports both units where applicable.
- Assumptions & limitations
- Results are preliminary estimates based on the inputs you provide. Confirm material properties, loads, local codes, and final designs with a qualified professional.
- Review status
- Formula and automated QA completed June 21, 2026; independent professional review is pending. Next scheduled review: September 21, 2026.
Validation sources
- ACI 318
- IS 456
- Eurocode 2
Concrete Calculator — Answer & Method
Calculate concrete volume, mix ratios, and material quantities for construction projects.
Formula: Concrete Volume
V = L × W × H (for slabs); V = πr²h (for columns)
L = Length (m)
W = Width (m)
H = Height/Depth (m)
Example Calculation
A 10×5m slab at 15cm depth requires 7.5 m³ concrete (~38 bags of 50kg cement for M20 mix).
Important limitation
Use this as a preliminary estimate and verify project-specific inputs, codes, and designs with a qualified professional.
Key Facts
- Standard concrete grades: M15, M20, M25, M30 indicate compressive strength in MPa.
- Typical waste factor is 5-10% additional material.
Sources & Validation
ACI 318IS 456Eurocode 2
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Deterministic: YesAI-Generated Numbers: NoVerified: 2026-02-12