![]() These are usually, but not always, in degrees Celsius. Safety Emporium has all kinds of lab equipment such as this incubating rocking shakers and more.īe very careful to note the units when reading temperatures on a Safety Data Sheet. See also: boiling point and freezing point. Note: All measurements are at 1 atm of pressure. ![]() Notable Temperatures On The Various Temperature Scales This is an obsolete temperature scale where the freezing point of water is zero degrees Réaumur and the boiling point of water is 80 degrees Réaumur. ![]() Like the Kelvin scale, the Rankine scale has no negative temperatures. Absolute zero is set to zero and each change of one degree Rankine = a change of one degree Fahrenheit, but a Rankine and Fahrenheit temperature are never equal. This is the Fahrenheit analog of the Kelvin scale. To convert a Fahrenheit temperature to Celsius, subtract 32 and multiply by 5/9. A change of 1 degree Fahrenheit equals a change of 5/9 = 0.56 degrees Celsius. This scale sets the freezing point of water to 32 degrees Fahrenheit and the boiling point of water to 212 degrees Fahrenheit. Note: simply use "Kelvin" or "Kelvins", not "degrees Kelvin" when using this unit. To convert a Kelvin temperature to Celsius, subtract 273.15. There are no negative temperatures in the Kelvin scale. A change of one degree Celsius = a change of one Kelvin, but a Celsius temperature is never equal to a Kelvin temperature. This scale sets the lowest obtainable temperature ( absolute zero = the temperature at which all molecular motion completely ceases) to 0 degrees. To convert a Celsius temperature to Kelvin, add 273.15 To convert a Celsius temperature to Fahrenheit, multiply by 9/5 and add 32. A change of 1 degree Celsius equals a change of 9/5 = 1.8 degrees Fahrenheit. This scale sets the normal freezing point of water to 0 degrees Celsius and the normal boiling point of water to 100 degrees Celsius. Even in the U.S., scientists and technical people use the metric system because of its ease of use. The metric system has been adopted by almost every country except the United States. Customary System) and metric (International System or SI or cgs) units. Many of the items you will find on an Safety Data Sheet come in both English (U.S. (Enter number on the left side answer appears on the right side) Sorry, you must enable Javascript and then reload the page for the calculator to work. Average sea level pressure is 1013.25 millibars (29.92 inches of mercury, 760 millimeters of mercury).Īlthough shown here as "windspeed" this calculator could just as well be used to convert "boatspeed." For more information about wind and wind scales go here.įor more information about time ( UTC, GMT, Z ) go here.If you convert a negative temperature, be sure to include the negative sign! For example, -31 oF = -35 oC, but +31 oF = -0.56 oC! Humidity is the ratio of the actual moisture content of the air at a specific temperature to the maximum amount that the air could hold at that temperature.īarometers measure air pressure in "millibars" (mb), "inches of mercury" (in) or "millimeters of mercury" (mm). Relative Humidity Calculator Temperature = Note: air temperature must be greater than 80 ☏ ( 27 ☌ ) and relative humidity must be higher than 40 percent. Heat Index is the temperature that it "feels like" based on actual temperature and humidity. For more information about wind chill go here. The "new" wind chill reflects the 2000-2001 National Weather Service update to the original ("old") 1945 index. Wind Chill is the temperature that it "feels like" based on actual temperature and wind speed. Wind Chill Calculator Air Temperature (☏) = Wind Speed (MPH) = For more information about temperature go here.
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