Measurement is one of the most important things in civil engineering and without measurements, we can not complete any construction. Here I have listed some basic measurements and conversion factors which are most commonly used in civil engineering. Hope it will help you in your work.

Basic quantities and units

 Quantity Dimension SI Unit FPS Unit Mass M Kg Slug Length L M ft. Time T sec. sec. Force F Newton (N) Pound (lb)

Basic standards

1 inch = 25.4 millimeters = 2.54cm.

1 meter = 39.37 inches =1.09 yards.

1 liter = 0.22 galls (imp.)

1 gallon (imp.) = 4.546 liters.

1 gallon (US) = 3.785 liters.

1 Kilogram (kg) = 2.2046 pounds (lb).

Metric unit of weight / mass

1 tonne = 1000 kilograms = 1,000,000 grams.

1 quintal = 100 kilograms = 100,000 grams.

1 Slug = 14.606 kg

1 Slug = 32.2 lb

Measurements of length

1 foot = 12 inches.

1 yard = 3 feet.

1 furlong = 220 yards.

1 mile = 8 fulongs.

1 Kilometer (Km) = 1000 meters.

1 meter (m) = 100 centimeters (cm).

Metric units for liquid measurments

1 liter = 1000ml.

1 liter = 1kg.

1 kiloliter (1000 liters) = 1 cubic meter/ 1 cu.m/ 1 m3.

Conversion factors

1 cu. ft. = 28.317 liters.

1 cu. ft. = 0.028 cu. meters.

1 cu. ft. = 6.24 galls (imperial).

1 cu. ft. = 7.48 galls (US).

1 imp. gall = 1.20 galls (US), liquid.

1 imp. gall = 1.03 galls (US), dry.

Measurement of area

1 Acre = 43560 sq. ft

1 Acre = 4046.46 sq. m

1 Acre = 8 Kanals.

1 Kanal = 20 Marlas.

1 Marla = 225 sq. ft (* in some regions 272 sq. ft)

1 Marla = 15.50 sq.m

Miscellenius conversion factors

1 cu.m = 35.32 cu.ft.

1 Pound = 4.448 Newton (Force).

1 klb = 4.448 kN.

1 Psi (lb/sq.in) = 6.689 Pascal (N/sq.m)

1 (lb/sq. ft) = 0.048 (kN/sq.m)