English metric units converter

Neither is any liability assumed for damages resulting from the use of the information contained herein. For more information, see the Disclaimer. Published by: Science Made Simple, Inc. Box , Voorhees, NJ Currency converter money, dollars, euros Temperature celsius to fahrenheit Distance meter to foot, mile to kilometer Time hours to minutes, days to years Pressure psi, atmospheres, millimeter of mercury Fruit Fuel economy Fractions to decimals Metric Conversion Factors Chart This easy-to-use metric conversion table includes standard conversion factors for common units and measurements.

SI prefixes indicating orders of magnitude are provided in Table 2. Use of these prefixes avoids the need for powers of 10 notations. No single conversion factor can be used to convert temperatures in the English system degrees Fahrenheit or degrees Rankine to temperatures in the SI system degrees Celsius and degrees Kelvin or the other way around. The equations for converting temperatures and temperature difference from one system to another are presented in Table 3.

A field is acres and you want to express that area in hectares. Find the Area category in Table 1. Since the known unit is "Acres", find the numeral "1" under the acre column. Follow that line to the right to find the corresponding multiplication factor of 0. The area of the acre field in hectares is For another exercise involving area, calculate how many sq ft square feet are in a plot that is 0.

Find the numeral "1" under hectare column and read the multiplier of , on the same line to the left under sq ft column. Then calculate the number of square feet as 64, 0. Energy content of buckwheat is Locate the numeral "1" under that column and then read to the left to get the multiplication factor of An electric resistance heating system rated at 25 kW is to be replaced with a propane furnace.

Under the Power category in Table 1, locate the numeral "1" under the kW column. A utility company decides to promote distributed generation by building 1, ministations with each powered by a 1, hp diesel engine.

What is the total capacity of the 1, stations? First, convert the 1, hp to kW using the factor of 0. The power that can be generated by 1, plants is 1,, kW 1, x To avoid use of trailing 0's or powers of 10, use the SI prefixes in Table 2.

The answer can be expressed as 1, MW or 1. The temperature on a very cold day in Moscow in February is C. Calculate the corresponding temperature in degrees F. Using Table 3, find the equation to change from degrees C to degrees F. So a temperature of C is On a winter day in State College, the outside air temperature is 20 F and the temperature inside a building is 70 F. So the temperature difference is 50 F. A unit of measurement is a defined magnitude of a quantity that it used as a standard for measurement for the same kind of quantity, such as measurements of length, weight, and volume.

In the past, many systems of measurement were defined on a local level, and could be based on factors as arbitrary as the length of a king's thumb. While this may work on a local level, when considering trade, as well as science, having systems of units based on units that others may not be able to relate to or understand makes interaction difficult. As such, the development of more universal and consistent systems developed over time. Today, some of the systems of units in use include the metric system, the imperial system, and the United States customary units.

The International System of Units SI is the standard metric system that is currently used, and consists of seven SI base units of length, mass, time, temperature, electric current, luminous intensity, and amount of substance. Although SI is used almost universally in science including in the US , some countries such as the United States still use their own system of units.

This is partly due to the substantial financial and cultural costs involved in changing a measurement system compared to the potential benefit of using a standardized system.

As such, many unit converters including this Conversion Calculator exist, and will continue to do so to ensure that people globally are able to communicate different measurements effectively. The Arabs used coins as a measurement of units of weight since a minted coin could not easily be cut or shaved to reduce its weight, and thus provided a measurable standard. They used a coin called a silver dirhem as a basic measure of weight, which had a weight roughly equivalent to 45 fully grown grains of barley.

Ten dirhems comprised a Wukryeh, which was translated into Latin as an "uncia" — the origin of the word "ounce. Over time, trade spread from the Mediterranean area to Europe, including the northern German City States.

As a result, a pound, 16 ounces of silver, or grains, became a commonly used measure in many regions.