Estimate dry cement volume and bag count for a simple rectangular placement using a user-supplied bag yield.
Result: Enter dimensions and bag yield.
Formula used
Volume = length × width × depth, adjusted by waste. Bag count = adjusted volume ÷ stated bag yield, rounded up.
Material note
Bag yield varies by product and mix. Use the manufacturer’s stated yield for the material you are actually buying. This tool does not design structural concrete mixes.