09/05/2021· How much cement for 1m3 concrete. One may ask, how much cement for 1m3 concrete?, generally, there are 10 bags of 25kg (total 250kg) cement needed for 1m3 of concrete by using standard mix of 1:5 (1 cement : 5 ballast). For 1:6 mix, there are 8.6 bags of 25kg (total 215kg) cement needed and for 1:4 mix, there are 12 bags of 25kg (total 300kg) cement needed for 1m3 concrete.