028m 3 of cement 1440 x 028 4032 kgs for 1m 3 of concrete 4032kgs of cement will be necessary no of cement bags necessary for 1m3 of concrete 40350 806 8 bags therefore 8 bags of cement is necessary for 1m3 of concrete the above formula will be same for finding out the quantity of sand and aggregate for 1m3 of concrete.