**Civil Engineering Unit conversion**

** Most Useful :
**

**1 Psi (Pound Per Square Inch) = 6.894757 Kpa (Kilopascal)**

**1 Kilogram-force/Square Centimeter (kg/cm²) = 98.066499997877 Kilopascal (kPa)** **Meter (kN/m²)**

**1ksi=6.89476Mpa (N/ mm²)**

**1 Kilopascal (kPa) = 1 Kilonewton/Square Meter (kN/m²)**

**1 newton/millimeter² [N/mm²] = 145.03773773 psi [psi]**

**1 psf (lb/sq. ft) = 0.048KN/ m² (kN/sq.m)**

**1 Pound (lb) = 4.448222 Newton (N)**

**1 psf (lb/ft^{2 })=47.88025 Pascal**

**1 acre = 4046.856 m²**

**Basic Quantities and Units:**

Quantity | Dimensions | SI Units | FPS Units |

Mass | M | Kg | Slug |

Length | L | M | |

Time | T | sec | |

Force | F | Newton (N) | Pound (lb) |

**Basic Standards**:

The standard relationship between English measures and Metric measures is as follows;

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 Units of Weights/Mass:**

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

1 quintal = 100,000 grams = 100 kilograms

1 Slug = 14.606 kg

1 Slug = 32.2 lb

**Note:**

*The gram is the weight of one cubic centimeter or one millimeter of water.

*Kilogram is the weight of one liter of water.

*Tonne is the weight of one cubic meter of water.

** **

**Measures of Length**:

Following are the basic measures of length in British Units;

12 inches = 1 foot

3 feet = 1 yard

220 yards = 1 furlong

8 fulongs = 1 mile

The measures of lengths in Metric Units are as follows;

1 Kilometer (Km) = 1000 meters

1 meter (m) = 100 centimeters (cm)

1 cm = 10 millimeter (mm)

** **

**Metric Units of Liquid Measures:**

1 liter = 1000ml

1 liter = 1kg

1 kiloliter (1000 liters) = 1 cu. Meter

** **

**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

**Miscellaneous Conversions 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)