Equations for Temperature Conversionsį = (9/5) x C + 32 C = (5/9) x (F-32) R = F + 460 K = C + 273 Δt (F) = Δt (C) x 1.8 Δt (C) = Δ (F) x 0.556į = degrees Fahrenheit C = degrees Celcius R = degrees Rankine K = degrees Kelvin Δt = temperature difference Examples Illustrating the Use of the Conversion Factors Example 1Ī field is 160 acres and you want to express that area in hectares. The equations for converting temperatures and temperature differences from one system to another are presented in Table 3. 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. Use of these prefixes avoids the need for powers of 10 notations. SI prefixes indicating orders of magnitude are provided in Table 2. Additional conversion factors are presented for energy, energy density, and energy yields. Table 1 presents the conversion multiplication factors to convert from English units to SI units (and vice versa) for basic measurements including length, weight, area, volume, bulk density, mass flow rate, volume flow rate, pressure and power. The fact sheet is intended for use in the classroom as well as for extension outreach programs. This fact sheet is intended to serve as a reference for converting many different types of measurements quickly and accurately from one system of units to another. The conversion factors presented are for general measurements as well as those primarily associated with energy calculations additional conversion multipliers can be found in the the references. Unit conversion multipliers are presented in this fact sheet along with several examples to describe the use of these multipliers. There have been some very costly failures associated with insufficient attention being given to the units of measurements involved in calculations and communications.Ī methodical approach is needed to avoid errors encountered when converting from one system of units to another. World-wide communications, commerce, finance and many other functions depend upon everyone involved in the processes to be knowledgeable of both systems of measurements. As our society and economy become more global in scope, it is increasingly important to fully comprehend both the English and the SI systems of units and to accurately and conveniently convert from one system to another. The SI system of units (often referred to as the metric system) is the official system for measurements in nearly all countries of the world, but not in the U.S. If you cannot access ‘convert.zip’ on your PC, download a trial version of WinZip which will enable you to do so.Today it is very important to be able to understand measurements in both the English system of units and the SI (Systems International) system of units. If you would like to put a shortcut to Convert on your desktop for easy access, right-click the icon, then left-click ‘Send To’ followed by ‘Desktop (create shortcut)’ and that’s it! The program can be opened by double-clicking it on most modern PCs running on Windows XP or Vista, however, for easy future use you can right-click the ‘convert.exe’ program and select ‘Copy’, before navigating to another folder on your PC such as ‘My Documents’, right-clicking again and selecting ‘Paste’ to place the file there – you should see appear if successful. Locate the file ‘convert.zip’ and double-click it, you should then be able to see the file ‘convert.exe’. Installing ‘Convert’ The Engineering Unit Conversion Calculator On Your PCĬonvert consists of a single 548KB file named convert.exe which is contained within the 154KB file named ‘convert.zip’ that you have downloaded to your preferred folder. This engineering unit conversion calculator makes engineering unit conversion fast and simple.
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