The British Thermal Unit (BTU) is the basic measure of heat energy in the Imperial system. One BTU is defined as the amount of heat necessary to raise 1 pound (0.45 kg) of water 1F. Furnaces are rated based upon how much thermal heat they can produce per hour (BTU/h), while air conditioners are rated based upon how much thermal heat they can remove per hour (BTU/h). Choosing a furnace

Centimeters (cm) and meters (m) are both measurements of distance in the metric system. There are 100 centimeters in every meter, which means that dividing your measurement in centimeters by 100 will convert it to meters. You can make this conversion quick and easy by simply moving the decimal point in your measurement 2 spaces (or “place values”) to the left. Likewise, if you need to

Many sites on the internet can automatically convert miles to kilometers. However, learning how to do it on your own is a good idea if you ever don't have an internet connection. The most important thing to remember is that there are 1.6 kilometers in a mile. This means that you can multiply your number of miles by 1.6 to get kilometers.

The foot is a type of imperial unit with a length equal to exactly 12 inches.

Both centimeters and millimeters are derived from the "meter," a measurement of distance used in the metric system. The prefix centi- means "one-hundredth," so there are 100 centimeters in every meter. The prefix milli- means "one-thousandth," so there are 1000 millimeters in every meter. Millimeters and centimeters are only separated by one tens place, which means that there are

A liter (or litre) is a metric unit used to measure volume or capacity. Liters are a common measurement often used to measure beverages and other liquids, such as a 2 liter bottle of soda. Sometimes you will need to calculate the volume of an object in liters, given the object's dimensions. In other instances, you will need to convert the volume of something that is already given in

Converting from milliliters (mL) to grams (g) is more complicated than plugging in a number, because it converts a volume unit, milliliters, to a mass unit, grams. This means each substance will have a different formula for conversion, but they never require any math more advanced than multiplication. This conversion is typically used when converting cooking recipes from one system to

The decimal (base ten) numeral system has ten possible values (0,1,2,3,4,5,6,7,8, or 9) for each place-value. In contrast, the binary (base two) numeral system has two possible values represented as 0 or 1 for each place-value. Since the binary system is the internal language of electronic computers, serious computer programmers should understand how to convert from decimal to binary.

The ability to convert numbers, fractions and decimals into percentages is necessary knowledge for many industries, including engineering, economics and business. It is equally useful in everyday life – we all know to tip 15%, but how many of us can calculate that quickly? Likewise, the ability to describe quantity with a percentage helps us visualize and understand the amount.

If you have ever wondered what a vehicle’s speed would be when converted from miles per hour to kilometers per hour, or even if you are a fan of cricket and want to be able to convert the reported speed of pitches, do not fret. With a little background and a calculator handy, you can easily convert speeds expressed in MPH to KPH.

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