In this paper mix calculation method in common use is introduced concisely.The volume model applicable to every kind of concrete is first proposed On the basis of the model formulas for the water content and sand ratio in concrete are established by scientific deduction Concrete Mix design calculation of Mass of fine aggregate 0688 x 0452 x 264 x 1000 821 kg m 3 Concrete Mix formulas for calculation of mix design for Concrete Cubic Yard Formula and Other Useful This article provides several useful calculations for concrete and a bags of concrete calculator formula that s 2400 kg m 3