If you have ever worked on building construction project, then probably you are familiar with unnecessary confusion that is created by the contractor and masons who give the depth of foundation trenches in feet , order timber in millimeters and give the building net usable and floor areas in square feet .How they happen to be using both Metric and US standard measurement systems is a mystery . But the best way out of this quandary is to learn the two system and develop the ability to convert measurement in metric system to US standard system or conversely to do the reverse. So without much ado, let me start with the Metric system measurement of volume, length and weight.
Metric measurement system
The smallest unit for measuring liquids is the milliliter (ml) .A milliliter is about 10 drops of water and 1000 milliliters is equal to one liter (L).
To measure weight or mass we use grams and one paper clip is about one gram.1000 grams is equal to one kilogram and 1000 kg is equal to 1 tonne(1 metric ton).
The smallest unit for measuring length is a millimeter(mm) and 10 millimeters is equal to one centimeter(cm). Most building plans give specifications in millimeters. To measure longer distance we use meters and is specially common when giving the floor area and net usable house area in square meters. One meter is equal to 100 centimeters. A kilometers is used to measure great distances with 1000 meters being equal to 1 kilometers (km).
Lastly areas measurement is as follows :one hectare (ha) is equals 10,000 square meters which is also equals to 2.4711 acres
US standard measurement system
The smallest unit for measuring liquid volumes under this system is the fluid once and 8 fluid ounce will fill a cup. 2 cups are equal to a pint. A quart (qt) is the same as 4 cups or 2 pints. A gallon (gal) is 16 cups or 8 pints or 4 quarts. A quart is a quarter of gallon. Paint is commonly sold in gallons and for your information a pint is the size of the quantity of milk in medium sized drinking glass.
1 gallon =4 quarts=8 pints=16 cups=128 fluid ounces.
Weight or mass in the US is measured in Ounces, pounds and Tons. The small unit in ounce (oz.).16 ounces are equals 1 pound (lb.).For example you can give the weight of bag of cement in pounds.
Now, 2000 (two thousand) pounds is equal to 1 ton. In other words, 1 pound=16 ounces and 1 ton=2,000 pounds.
Finally Length in the USA in measured in inches, feet, yards, and miles. An inch is the smallest unit of measurement. Now, 12 inches is equals to one foot and 3 feet is equal to yard. And 1,760 yards are equals to 1 mile.
1yard = 3 feet=36 inches.
Here is how to undertake conversion:
1 foot =0.3048 meters: So to convert feet to meters, multiply by 0.3048.
1 km=0.6214 mile: So to convert km to miles multiply by 0.6214
1 inch=2.54 cm: To convert from cm to inches divide by 2.54
Inch=25.40mm: To convert from mm to inches divide by 25.40
Inch=0.0254meters: to convert from meters to inches divide by 0.0254
I sq. cm (square centimeters) =100(square mm) =0.1550 inches square. So to convert square inches to square centimeters divide by 0.1550.
1 meter squared =10.764 square feet: so to convert from square feet to meters squared simply divide by 10.764.You the same logic to convert the acres, hectares and km squared.
1 sq. m (square meters) =10,000(square centimeters) =1.1960(square yards)
1 hectare (ha) =10,000 Square meters) =2.4711 acres
1sq km (squared km) =100ha=0.3861(square mile).
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