Concrete calculator - cement:sand:gravel:water

The application calculates the exact proportions, volume and weight of cement, water, sand and gravel for making concrete with desired characteristics: compressive firmness - classes B7, 5. B30 or mark M100. M400. Mobility of the concrete mix - P1. P5. Frost-resistance - F50. F1000. Watertightness - W2. W20.