Fahrenheit to Celsius
39 rows · How to convert Fahrenheit to Celsius. 0 degrees Fahrenheit is equal to degrees Celsius: 0 °F = °C. The temperature T in degrees Celsius (°C) is equal to the temperature T in degrees Fahrenheit (°F) minus 32, times 5/9: T (°C) = (T (°F) - 32) ? 5/9. or. T (°C) = (T (°F) - 32) / (9/5) or. T (°C) = (T (°F) - 32) / Example. To go from Fahrenheit to Celsius, take 30 off the Fahrenheit value, and then half that number. For a % accurate answer, subtract 32 and divide by (or .
It is most commonly used in the United States in weather forecasts and to describe temperatures inside houses, offices, etc. I asked a few people and the conversion formula is the first thing that comes to mind - and how hard it is to remember. The result won't be accurate but it does provide an approximate number that's "good enough" in everyday situations. The accurate answer is 77F but if you don't have a calculator handy and can't multiply and divide using fractions then this formula will give you a good idea that you can use in everyday situations.
Because of the complex convesion formula people often use fahrenheit to celsius calculators to convert temperatures. Visit the Canadian holidays website for dates and info about holidays in Canada to help plan how to unlock luigi in super smash bros 64 vacations. Quickly convert common temperatures using the fahrenheit to celsius conversion chart below:.
Conversion, definition and formulas for celsius and fahrenheit calculations. Fahrenheit to celsius conversion. Fahrenheit or celsius? It's like gallons and liters: a great way to confuse overseas tourists:.
?? Convert Temperature : Fahrenheit (?F) to Celsius (?C)
The Celsius and Kelvin scales are precisely related, with a one-degree change in Celsius being equal to a one degree-change in kelvin. The kelvin (and thus Celsius) is defined based on the Boltzmann constant, k, which equals ? when expressed in the unit J·K-1, . 38 rows · Fahrenheit to Celsius formula. Fahrenheit (°F) to Celsius (°C), how to convert & . 53 rows · 37 degrees Celsius is the equivalent of degrees Fahrenheit, or normal body .
Fahrenheit and Celsius are the scales most often used for reporting room, weather, and water temperatures. The Fahrenheit scale is used in the United States, while the Celsius scale is used worldwide. Indeed, most countries around the world measure their weather and temperatures using the relatively simple Celsius scale. But the United States is one of just a few remaining countries that use Fahrenheit, so it's important for Americans to know how to convert one to the other , especially when traveling or doing scientific research.
First, you need the formula for converting Fahrenheit F to Celsius C :. The notation C represents the temperature in Celsius, and F is the temperature in Fahrenheit. After you know the formula, it is easy to convert Fahrenheit to Celsius with these three steps. For example, suppose the temperature is 80 degrees Fahrenheit and you want to know what the figure would be in Celsius. Use the above three steps:. So the temperature in Celsius is If you want to convert a normal human body temperature As noted, your starting temperature is So you would have:.
Check your answer to ensure it makes sense. At ordinary temperatures, a Celsius value is always lower than the corresponding Fahrenheit value. Also, it's helpful to keep in mind that the Celsius scale is based on the freezing and boiling points of water, where 0 C is the freezing point and C is the boiling point. On the Fahrenheit scale, water freezes at 32 F and boils at F. You often don't need an exact conversion. If you're traveling to Europe, for example, and you know the temperature is 74 F, you might want to know the approximate temperature in Celsius.
The website Lifehacker offers this tip on making an approximate conversion:. Fahrenheit to Celsius : Subtract 30 from the Fahrenheit temperature and then divide by two. So, using the approximation formula:. If you go through the previous formula's calculations for the exact temperature, you arrive at Celsius to Fahrenheit: To reverse the approximation and convert from 22 C to Fahrenheit, multiply by two and add You can save even more time by using predetermined conversions.
Note how the Fahrenheit and Celsius scales read the same temperature at While you're mastering these conversions, it might be interesting to learn how the Fahrenheit temperature scale came into existence. The first mercury thermometer was invented by German scientist Daniel Fahrenheit in His scale divides the freezing and boiling points of water into degrees, with 32 degrees as water's freezing point, and as its boiling point.
On Fahrenheit's scale, zero degrees was determined as the temperature of a temperature-stable brine solution of ice, water, and ammonium chloride. He based the scale on the average temperature of the human body, which he originally calculated at degrees. As noted, it's since been adjusted to Fahrenheit was the standard unit of measure in most countries until the s and s when it was replaced with the Celsius scale in a widespread conversion to the more useful metric system.
In addition to the United States and its territories, Fahrenheit is still used in the Bahamas, Belize, and the Cayman Islands for most temperature measurements. Share Flipboard Email. Anne Marie Helmenstine, Ph.
Chemistry Expert. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels. Facebook Facebook Twitter Twitter.
Updated April 02, Cite this Article Format. Helmenstine, Anne Marie, Ph. How to Convert Fahrenheit to Celsius. Formulas for Fahrenheit and Celsius Conversions.
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