Free in-browser concrete calculators for slabs, columns and post holes. Volume in cubic yards, cubic feet or cubic metres, with a 10% waste buffer.
Calculate the concrete volume for a circular column from diameter and height. Imperial and metric units, with a 10% waste buffer per ACI 318.
Open calculator →Calculate the concrete volume for a circular slab from diameter and depth. Imperial and metric units, with a 10% waste buffer per ACI 318.
Open calculator →Calculate the concrete volume for fence-post holes — by hole, total across all holes, with post-profile displacement and a 10% waste buffer.
Open calculator →Calculate the concrete volume for a rectangular slab from length, width and depth. Imperial and metric units, with a 10% waste buffer per ACI 318.
Open calculator →Calculate the concrete volume for an irregular slab from a pre-measured area and depth. Imperial and metric units, with a 10% waste buffer per ACI 318.
Open calculator →The Concrete Calculator app for iOS has every calculator above plus saved projects, full offline support, and history across all your jobs.
