Concrete Calculator Slabs, Square Footings, or Walls Losas , Cimientos cuadrados, Paredes length/ largo footinchyardmetercentimeter width/ ancho footinchyardmetercentimeter thickness or height/ grosor footinchyardmetercentimeter quantity/ cantidad Hole, Column, or Round Footings Columnas, Cimientos redondos diameter/diametro footinchyardmetercentimeter depth or height/profundidad footinchyardmetercentimeter quantity/cantidad Circular Slab or Tube Losas circulares, Tubos outer diameter/diametro footinchyardmetercentimeter inner diameter/ diametro interno footinchyardmetercentimeter length or height/altura/grosor footinchyardmetercentimeter quantity/cantidad powered by calculator.net