About

ConcreteCalc is a small set of free concrete calculators. We built it after too many trips to the store for "one more bag" because the scribbled math was wrong. Here the volume, bag and cost math runs entirely in your browser; nothing you type is uploaded or stored.

Our calculators are reviewed by a working residential contractor, Tom K., for sane defaults and plain-English explanations. We are not a ready-mix dealer and we do not sell concrete — we just want the yardage to be honest and free.