The following are the various important measurements which are required for the day to day work in Civil Engineering :-

Weight Of 1 Bag Of Cement = 50kg
Volume Of 1 Bag Of Cement = 0.0347 cu.m.
Weight Of 1 cu.m. Of Mild Steel = 7850kg
Weight Of Concrete 1 cu.m. Of Plain Cement Concrete = 2400kg
Weight Of Concrete 1 cu.m. Of Reinforced Cement Concrete = 2500kg

Lenear Measurements==>

1m = 100cm
1m = 1000mm
1m = 3.28 ft.
1m =  39.37 inches.
1ft. = 0.305m
1ft. = 12 inches
1ft = 30.48cm
1ft. = 304.8mm
1 inch. = 0.0254m
1 inch. = 0.0833ft.
1 inch = 2.54cm
1 inch. = 25.4mm

Area Measurements===>

1 Sq.m. = 10000 Sq.cm.
1 Sq.m  = 1000000 Sq.mm.
1 Sq.m. = 10.76 SFT (Sq.ft.)
1 Sq.m. = 1550 Sq.inches.
1 Sq.ft. =  0.093 Sq.m.
1 Sq.ft. =  0.007 Sq.inches
1 Sq.ft. =  0.155 Sq.cm
1 Sq.ft. =  0.0016 Sq.mm.

Volume Measurements===>

1 Cu.m. = 1 x 10^6  Cu.cm.
1 Cu.m. = 1 x 10^9  Cu.mm.
1 Cu.m. = 35.288 CFT ( Cu.ft.)
1 Cu.m  =  61023.28 Cu.inches
1CFT =  0.028 Cu.m.
1CFT =  1728 Cu.inches
1CFT =  0.061 Cu.inches
1CFT =  0.000061 Cu.mm.