Civil engineering and structures
Concrete volume for a slab
Calculates concrete volume from slab area and thickness.
Related calculators
Concrete volume for a rectangular shape
Calculates concrete volume from the length, width, and height of an element.
Concrete density from mass and volume
Calculates concrete density from user-provided mass and volume.
Reinforcement mass from length and diameter
Calculates approximate reinforcing bar mass using the practical formula m = L * d² / 162.
Concrete mix water mass
Calculates helper water mass from user-provided water-cement ratio and cement mass.
Concrete water-cement ratio
Calculates the simple ratio of water mass to cement mass from user-provided values.
Concrete bags count
Helper estimate for bag count from concrete volume and one-bag yield; it is not code-based design.