Concrete quantity toolsAbout this website
Estimating disclaimer
A calculator estimates a quantity from the measurements and material information you enter. It does not determine whether a design or product is right for your project.
Estimates are not structural design
These calculators do not assess loads, soil capacity, structural safety, reinforcement, concrete strength, or code compliance. Use dimensions and configurations established for your project by a qualified professional.
Use product information that matches your job
Bag yield, density, coverage, and recipe yield depend on the product and conditions. Published yields and coverage rates may be approximate. Surface texture, moisture, compaction, and jobsite loss can affect how much material you need.
Check quantities before ordering
Check the dimensions, included faces or sections, units, and rounding. The calculators do not add extra material for waste unless stated. Confirm final quantities and product requirements with your supplier and project documents.
Some calculators have additional limits
The evaporation calculator estimates water loss from a free-water surface under the conditions listed with the tool. It does not decide when to place concrete or when protection is needed. The recipe calculator scales an existing recipe; it does not design a concrete mix.