- Super Angebote für Celsius R940 hier im Preisvergleich. Große Auswahl an Celsius R940
- Aktuelle Preise für Produkte vergleichen! Heute bestellen, versandkostenfrei
- us 40 degree celsius is equal to
- us 40 degrees Celsius? 40° below zero from C to F

Here is a chart listing equivalent Celsius and Fahrenheit temperatures counting by 5 degrees Celsius and 9 degrees Fahrenheit. This temperature conversion chart counts down from 310 °C to -90 °C in five degree Celsius increments. This temperature conversion chart counts down from 590 °F to -130 °F in nine degree Fahrenheit increments Zero degrees Fahrenheit lines up with -17.778 degrees Celsius, so all temperatures below -17.778 degrees Celsius are negative in both Celsius and Fahrenheit. Also, at -40 degrees Celsius and Fahrenheit the temperatures match up. So, -40 degrees Celsius and -40 degrees Fahrenheit are the same temperature. Converting From Celsius to Fahrenheit How to convert Celsius to Fahrenheit. 0 degrees Celsius is equal to 32 degrees Fahrenheit: 0 °C = 32 °F. The temperature T in degrees Fahrenheit (°F) is equal to the temperature T in degrees Celsius (°C) times 9/5 plus 32:. T (°F) = T (°C) × 9/5 + 32 . or. T (°F) = T (°C) × 1.8 + 32 . Example. Convert 20 degrees Celsius to degrees Fahrenheit 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 1.380649 × 10-23 when expressed in the unit J·K-1, a unit equivalent to kg·m 2 ·s-2 ·K-1

Negative - 40 degrees Fahrenheit (-40 ° F) is equal to negative - 40 degrees Celsius (-40 ° C) Specifically, degrees Celsius is equal to kelvins minus 273.15. The degree Celsius is the SI derived unit for temperature in the metric system. A degree Celsius is sometimes also referred to as a degree centigrade. Celsius can be abbreviated as C; for example, 1 degree Celsius can be written as 1 °C. Fahrenheit This same average temperature taken in the rectum is higher than in the mouth at approximately 0.5 degree Celsius or +/- 1 degree Fahrenheit (0.9 degree to be exact). When the temperature measured in the mouth rises above 37.5 degrees Celsius (or 99.5 ° F), 38 degrees Celsius (100.4 ° F) in the rectum, it can be considered fever A chart listing equivalent Celsius, Fahrenheit and Kelvin temperatures counting by 5 degrees Celsius, 9 degrees Fahrenheit and 5 kelvin. minus 40 .info This website has cookies, advertising, security monitoring and statistical analysis of visitor traffic

- us 40 to
- Celsius and Fahrenheit are two important temperature scales that are commonly misspelled as Celcius and Farenheit. The formula to find a Celsius temperature from Fahrenheit is: °F = (°C × 9/5) + 32; The formula to find a Fahrenheit temperature from Celsius is: °F = (°C × 9/5) + 32; The two temperature scales are equal at -40°
- us 40 Fahrenheit in Celsius? How cold is
- us 40 degrees to
- celsius to fahrenheit conversion chart °c °f °c °f °c °f °c °f °c °f °c °f-17.0 1.4 -6.0 21.2 5.0 41.0 16.0 60.8 27.0 80.6 38.0 100.
- Negative forty degrees is the temperature where the Fahrenheit and Celsius scales correspond with one another (-40°F = -40°C). Forty is also considered a semi-perfect number owing to the fact that a subset of its divisors added together gives 40 (i.e. 1, 4, 5, 10, and 20)

- Next, let's look at an example showing the work and calculations that are involved in converting from Celsius to Fahrenheit (°C to °F). Celsius to Fahrenheit Conversion Example Task: Convert 10°C to Fahrenheit (show work) Formula: (°C x 1.8) + 32 = °F Calculations: (10°C x 1.8) + 32 = 50°F Result: 10°C is equal to 50°
- us 40. There are two great things about -40. First, you don't have to specify if it's in Celsius or Fahrenheit since -40°C = -40°F..
- Source: NIST.gov *The point at which the two temperature units are equivalent (-40 °C = -40 °F). As you can see from this chart, Fahrenheit temperatures are typically a lot higher than their equivalent Celsius temperatures are. Also, notice how the difference between Celsius and Fahrenheit starts to get smaller the lower you go in temperature—until, that is, they're the exact same
- The Fahrenheit and Celsius scales have one point at which they intersect. They are equal at -40 °C and -40 °F. The simple method to find when two temperature scales are equal to each other is to set the conversion factors for the two scales equal to each other and solve for temperature. Beside above, what is the Fahrenheit temperature of 40 C

** Absolute zero on the Celsius and Fahrenheit scales are −273**.15 (degree)C and −459.67 (degree)°F respectively. Therefore an exact formula for conversion would be: the temperature T in degrees Celsius or (degree)°C is equal to temperature T in degrees Fahrenheit or (degree)F minus 32, times 5/9 The Celsius and Fahrenheit temperature scales have minus 40 degrees (-40°) in common. Otherwise the Fahrenheit scale has a larger number than the Celsius scale to express the same temperature. On the Fahrenheit scale, the interval between the freezing and the boiling point of water is set at 180°, while that of the Celsius scale is set at 100°

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 100 C is the boiling point. On the **Fahrenheit** scale, water freezes at 32 F and boils at 212 F 0 degrees Fahrenheit is equal to -17.77778 degrees Celsius: 0 °F = -17.77778 °C The temperature T in degrees Celsius (°C) is equal to the temperature T in degrees Fahrenheit (°F) minus 32, times 5/9

It is a coincidence that at that point both scales read -40 degrees. There is no intention behind it. The conversion from Celsius to Fahrenheit is: C = (F - 32)* (5/9 Convert temperature from Celsius to Fahrenheit and vice versa. Converts °C to °F and vice versa. Fahrenheit to Celsius (°F to °C) and vice versa. Toggle navigation. -40 °F = -40 °C (Point where Fahrenheit scale and Celsius scale intersect and shows the same value). 0 °F = -17.778 °C. 1 °F = -17.222 °C. 100 °F = 37.778 °C With the extreme temperatures we've been experiencing in Hamilton this week, we hit -40°C with the wind chill factor. Interestingly, -40°C and -40°F are act.. The temperature in portions of the Yakutia region of eastern Russia, where Yakutsk is located, dropped below minus 40 degrees Fahrenheit (minus 40 degrees Celsius) during the middle of December and..

I am unsure if it was Anders Celsius or Daniel Gabriel Fahrenheit who created this conversion formula. Literature indicates that the Fahrenheit scale was invented in 1724 and the Celsius (Centigrade) scale invented in 1742. From these dates, it's probable that Anders Celsius invented this conversion formula. How To Convert Celsius To Fahrenheit On the Celsius scale, the freezing and boiling points of water are 100 degrees apart. A temperature interval of 1 °F is equal to an interval of 5 ⁄ 9 degrees Celsius. The Fahrenheit and Celsius scales intersect at −40° (i.e., −40 °F = −40 °C). Absolute zero is −273.15 °C or −459.67 °F Entdecke Minus bei Zalando. Bestelle jetzt bequem online Convert -40 degree celsius to fahrenheit: The formula required for conversion is; °F = (°C × 9/5) + 32 To convert -40 degree celsius to fahrenheit, multiply the celsius value by 9/5 and then add 32 in it The Kelvin and Rankine scales are absolute versions of the Celsius and Fahrenheit scales, respectively, meaning that the zero points on these scales reflect a theoretical minimum temperature. In contrast, the zero points on the Celsius and Fahrenheit scales were originally based on observable physical phenomena, such as the freezing point of water

How to convert Celsius to Fahrenheit [°C to °F]: °F = °C×9÷5+32. How many Fahrenheit in a Celsius: If T °C = 1 then T °F = 33.8 °F. How many Fahrenheit in 55 Celsius: If T °C = 55 then T °F = 131 ° To convert from Fahrenheit to Rankine, add 459.67 to the Fahrenheit reading. To convert from Kelvin to Rankine, multiply the Kelvin temperature by 9/5. Here's one example of temperature comparisons: 68 Fahrenheit is the same as 20 Celsius, 293.15 Kelvin, and 527.67 Rankine The degree Celsius (symbol: °C) can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. In 1948, the 9th CGPM and the CIPM formally adopted degree Celsius. Fahrenheit : Fahrenheit (symbol: °F) is a unit of measurement for. It looks like residents of Russia's Sakha Republic (Yakutia), who have recently experienced a freezing minus 68 degrees Celsius (minus 90.4 degrees Fahrenheit), can easily brave any meteorological cataclysm. Despite the unusual temperatures, they continue to study, work and enjoy their hobbies. Even the icy mist is not an obstacle

To convert degrees Fahrenheit back into degrees Celsius by this method, you would first subtract 32 from the degrees Fahrenheit, then multiply the result by 5/9 instead. (F-32)*5/9 = C Alternatively, if you just want a simple way to know what to pack, you could find out the average temperatures and weather conditions you can expect year-round. Fahrenheit To Celsius -40 °F = -40 °C (Point where Fahrenheit scale and Celsius scale intersect and shows the same value). 0 °F = -17.778 °C. 1 °F = -17.222 °C * Minus 40 degrees Celsius is what in Fahrenheit? The fahrenheit scale and the celsius scale cross at about -40 c or -40 f so they are about the same, so the characters should dress like for Antarctica*. Neil. 2 0. Doc89891. Lv 7. 8 years ago Celsius to Fahrenheit: Multiply by 9, divide by 5, then add 32. As a point of interest, the Celsius and Fahrenheit scales converge at minus 40 degrees, so -40 °C and -40 °F represent the same temperature. But Which is Best

Celsius to Fahrenheit: Multiply by 9, divide by 5, and then add 32 Fahrenheit to Celsius: Subtract 32, then multiply by 5, then divide by 9 Interesting fact: The Fahrenheit scale and the Celsius scale are the same at -40 degrees. This relation can also be used when converting from one scale to the other Then, add 32 to the product to get the degrees in Fahrenheit. For example, if you were trying to convert 20 degrees Celsius to Fahrenheit, first you'd multiply 20 by 1.8 to get 36. Then, you'd add 32 to 36 and get 68. Therefore, 20 degrees Celsius is equal to 68 degrees Fahrenheit. To learn how to convert Fahrenheit to Celsius, scroll down The Celsius scale is an interval system but not a ratio system, meaning it follows a relative scale but not an absolute scale. This can be seen because the temperature interval between 20°C and 30°C is the same as between 30°C and 40°C, but 40°C does not have twice the air heat energy of 20°C Celsius vs Fahrenheit. Celsius is a temperature scale in which the freezing point of water is 0 °C and the boiling point of water is 100 °C, whereas in Fahrenheit temperature scale, the freezing point of water is 32 °F and the boiling point of water is 212 °F

** Usually around minus 5 degrees Celsius, but sometimes it gets as cold as minus 12 degrees**. How cold does it get in Alaska? Depending on the area, but it's common for the temperature to be below 0. Is that in Fahrenheit or Celsius? Fahrenheit. That means it's 20 below zero -40 °C feels colder than 40°F. 1°C = 33.8°F The Celsius temperature scale was designed so that the freezing point of water is 0 degrees, and the boiling point is 100 degrees at standard atmospheric pressure. ›› Definition: Fahrenheit. Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686-1736), who proposed it in 1724. ›› Metric conversions.

Fahrenheit to Celsius: Add 40, multiply by 5/9, then subtract 40. Example: Convert 10° Celsius (A cool day) to Fahrenheit. 10+40 = 50; 50×9/5 = 90; 90−40 = 50° F; To remember 9/5 for °C to °F think F is greater than C, so there are more °F than °C Quick, but Not Accurate Water freezes at 0 degrees Celsius, and boils at 100 degrees C, while in Fahrenheit, water freezes at 32 degrees F and boils at 212 degrees F. You see that Celsius has 100 degrees between the freezing and boiling point, whereas Fahrenheit has 180 degrees between these two points. One degree Celsius is 1.8 times larger than one degree Fahrenheit If you were wondering if there is a temperature where **Fahrenheit** and **Celsius** are the same, it's at **40** below zero, also known as -**40** or negative **40**. At all other temperatures, the difference is history. History of **Fahrenheit** and **Celsius** Scales Globally, the standard scale for everyday use is **Celsius** * A Fahrenheit-temperature of 100 degrees is roughly 37,8 °Celsius*. So by a child with such a temperature you would think of giving it medication. 61 is 16 Certain numbers are quite helpful, 61 °F is 16 °C, so the weather is where you will need a jumper

* Instant free online tool for degree centigrade to degree Fahrenheit conversion or vice versa*. The degree centigrade [°C] to degree Fahrenheit [°F] conversion table and conversion steps are also listed. Also, explore tools to convert degree centigrade or degree Fahrenheit to other temperature interval units or learn more about temperature interval conversions Celsius skalan är ett intervall system men inte ett ratio system, vilket betyder att den följer en relativ skala och inte en absolut skala. Detta kan man se eftersom temperatur intervallet mellan 20 °C och 30 °C är densamma som mellan 30 °C och 40 °C, men 40 °C har inte dubbelt så mycket luftvärme energi som vid 20 °C

The Fahrenheit and Celsius scales intersect at −40° (i.e., −40 °F = −40 °C). Absolute zero is −273.15 °C or −459.67 °F. The Rankine temperature scale uses degree intervals of the same size as those of the Fahrenheit scale, except that absolute zero is 0 °R — the same way that the Kelvin temperature scale matches the Celsius. How to convert 42 degrees Celsius to degrees Fahrenheit. To convert 42 °C a degrees Fahrenheit you have to multiply 42 x 9/5 and then add 32. 1 °C is 33.8 °F. So, if you want to calculate how many degrees Fahrenheit are 42 degrees Celsius you can use this simple rule 80 Fahrenheit to Celsius. What is 80 degrees fahrenheit in celsius? - 80 degrees in fahrenheit is equal to 26.67 degrees in celsius. 80 Fahrenheit to Celsius to convert 80 degrees fahrenheit to celsius and vice versa. To convert 80 °F to °C, 80 minus 32 and then divide by 1.8

Sunday Fact Book #6: Minus 40 degrees Celsius is exactly the same as minus 40 degrees Fahrenheit The result for converting celsius to Fahrenheit as, Id Celsius Fahrenheit 0 1 37.5 99.5 1 2 36.0 96.8 2 3 40.0 104.0 3 4 38.5 101.3.

The temperature in portions of the Yakutia region of eastern Russia, where Yakutsk is located, dropped below minus 40 degrees Fahrenheit (minus 40 degrees Celsius) during the middle of December and hasn't climbed above that level since -- making this one of the longest stretches of subzero cold in at least 14 years, according to The Associated Press The temperature in portions of the Yakutia region of eastern Russia, where Yakutsk is located, dropped below minus 40 degrees Fahrenheit (minus 40 degrees Celsius) during the middle of December. * 240 Celsius To Fahrenheit 464 °F If a value you are interested in is not displayed*, use the calculator convert the temperature, or view the conversion tables page which features temperatures between -273 and 144 Celsius (°C) converted to Fahrenheit (°F) How to convert Celsius temperatures to Fahrenheit Multiply the Celsius temperature by 9/5. Add 32 o to adjust for the offset in the Fahrenheit scale. Example: convert 37 o C to Fahrenheit. 37 * 9/5 = 333/5 = 66.6 66.6 + 32 = 98.6 o F There is a mental math method to convert from Celsius to Fahrenheit. The ratio of 9/5 is equal to 1.8 and 1.8 is. look at the two thermometers below identify which is Celsius and which is Fahrenheit and then label the boiling and freezing points of water on each now the Celsius scale is what's used in most of the world so the Celsius scale Celsius Celsius is most of the world most of the world and the easy way to tell that you're dealing with the Celsius scales on the cents on the Celsius scale zero zero.

What is 74 degrees Celsius in Fahrenheit? Just type in either box, and the number in the other box will be converted automatically. Celsius: Fahrenheit: 74° Celsius = 165.2° Fahrenheit 74.40 °C = 165.92 °F: 74.70 °C = 166.46 °F: 174 °C = 345 °F: 74.11 °C = 165.40 °F: 74.41 °C = 165.94 °F: 74.71 °C = 166.48 °F: 274 °C = 525 °F ** How to convert Fahrenheit (°F) to Celsius (°C)? To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit value and divide by 1**.8. For example, to convert 80 degrees Fahrenheit to degrees Celsius, subtract 32 from 80 and then divide by 1.8, that makes 80 °F is 26.66 °C Going from Celsius to Fahrenheit you also add 40 to the centigrade reading, multiply by nine, divide by 5, then subtract 40. It may sound strange but it does indeed work, like this: Our original 66 degrees Fahrenheit plus 40 makes 106, times five equals 530, divided by nine gives us 58.88 recurring, rounding up to 58.9, minus 40 takes us once. Zone 1 means that plants rated for it can survive average minimum temperatures of minus 46 degrees Celsius or minus 50 degrees Fahrenheit. Zone 2: minus 46 to minus 40 degrees Celsius or minus 50 t0 minus 40 degrees Fahrenheit. Zone 3: minus 40 to minus 35 degrees Celsius or minus 40 to minus 30 degrees Fahrenheit. Zone 4: minus 35 to minus 29.

The Fahrenheit scale is used in the U.S. On this scale, 32 is the freezing point of water, 212 the boiling point. The center of the sun is thought to be 40 million degrees Celsius. The Celsius, or centigrade, scale is used by the World Meteorological Organization and most countries in the world. On this scale, 0 is freezing, 100 is boiling That's 48 degrees Celsius (87 degrees Fahrenheit) colder than what most people consider the freezing point of water, namely, 0 C (32 F). Supercooled liquid water must become ice at minus 48 C. ** This is because 32 degree Fahrenheit equals 0 degrees Celsius**. However, don't be afraid as this example shows you another mnemonic. As I said, 0 degree Celsius equals 32 degrees Fahrenheit. Furthermore, 16 and 61 is a good number for the conversion of Fahrenheit to Celsius. Because 16 degree Celsius equals approximately 61 degrees Fahrenheit

Reverse formula and conversion (Celsius to Fahrenheit) Fahrenheit. Widely used in the United States, the Fahrenheit scale is named after Daniel Gabriel Fahrenheit, inventor of the alcohol and mercury thermometers. The freezing point of water is 32 °F, and the boiling point is 212 °F 38 Fahrenheit to Celsius. What is 38 degrees fahrenheit in celsius? - 38 degrees in fahrenheit is equal to 3.33 degrees in celsius. 38 Fahrenheit to Celsius to convert 38 degrees fahrenheit to celsius and vice versa. To convert 38 °F to °C, 38 minus 32 and then divide by 1.8 Celsius, sometimes referred to as centigrade, is a unit for temperature measurement and a related temperature scale.It has got the name of its developer, the Swedish scientist and physicist A. Celsius. The SI recognizes Celsius as a base temperature measurement unit, and the symbol for Celsius is °C. Traditionally, the scale is defined and the following: 0 °C is the water freezing point, and. To convert Fahrenheit to Centigrade: simply subtract (minus, or take away) 30 from degrees in F, and half it for example: 70 deg F i.e 70-30 = 40, divide 40 by 2 ( or half that amount) = 20 deg C mat The Celsius temperature scale was designed so that the freezing point of water is 0 degrees, and the boiling point is 100 degrees at standard atmospheric pressure. ›› Definition: Fahrenheit Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686-1736), who proposed it in 1724

For example, to convert 50 degrees Celsius (centigrade) to Fahrenheit, we plug our numbers into the formula as shown below: F = C * 9/5 + 32. F = 50 * 9/5 + 32 F = 90 + 32 F = 122 50 degrees Celsius is equal to 122 degrees Fahrenheit. Formulas for Converting Temperature Scales: The following temperature conversion formulas are used to convert. c f c f c f c f c f-40.0-40.0: 10.0: 50.0: 60.0: 140.0: 110.0: 230.0: 210.0: 410.0-39.0-38.2: 11.0: 51.8: 61.0: 141.8: 111.0: 231.8: 211.0: 411.8-38.0-36.4: 12.0: 53. Minus 40 degrees celsius is exactly minus 40 degrees fahrenheit Is it true or false? Check Your Knowledge at TrainYrBrain.com. Email. Train Brain! Your Daily Dose of Trivia Fun :-) True or False Question. Minus 40 degrees Celsius is exactly minus 40 degrees Fahrenheit. True False. Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine, and Reaumur are the most popular, with Celsius and Fahrenheit clearly being the two most people see used in their local weather report. Just type in the temperature and calculate the figure. Simple! __Example__ * Convert 350 Fahrenheit to Celsius

In a more informal context Fahrenheit is acceptable. Do not use the term centigrade. C is the abbreviation for Celsius, cap C, no space or period. When writing out, use degrees with zero or values greater than one: 23 degrees Celsius, zero degrees Celsius; minus 4°C or -4°C F is the abbreviation for Fahrenheit Storage of your epoxy adhesive in a freezer at minus 40 degrees Celsius can considerably extend the shelf life of the epoxy adhesive. When storage is required; storage at this temperature will increase the shelf life of your epoxy to around 6 months. 0°C to -40°C: 67 x 19 x 30 (170.2 x 48.3 x 76.2) 95-1/2 x 35-1/2 x 44 (242.6 x 90.2. To change 17° Celsius to Fahrenheit, just need to replace the value [°C] in the formula below and then do the math. Step-by-step Solution: Write down the formula: [°F] = [°C] × 9⁄5 + 3 The rest of the world uses the Celsius scale, where water freezes at zero degrees and boils at 100 degrees. The Fahrenheit and Celsius scales converge at minus 40°F, so that minus 40°F and minus 40°C represent the same temperature. Answer: The correct answer is -40

C°~F° Celsius and Fahrenheit Full Range Other ranges: °F °C-60-51.1-59-50.6-58-50.-57-49.4-56-48.9-55-48.3-54-47.8-53-47.2-5 How to convert Celsius temperatures to Fahrenheit with mental math. Double the Celsius temperature (multiply by 2). Take 1/10 of this number (2 * 1/10 = 0.2) and subtract it from the number above. Add 32 o to adjust for the offset in the Fahrenheit scale To change -18° Celsius to Fahrenheit, just need to replace the value [°C] in the formula below and then do the math. Step-by-step Solution: Write down the formula: [°F] = [°C] × 9⁄5 + 3

How to Convert Fahrenheit to Celsius. Take the temperature in Fahrenheit subtract 32; Divide by 1.8; The result is degrees Celsius; How to Convert Celsius to Kelvin. K = C + 273.15. Where K = Degrees in Kelvin and C = Degrees in Celcius. The Celsius and Kelvin scales use the same size degrees, but Kelvin has a zero point at absolute zero, not. All planets have temperature changes related to their seasons; some changes are more extreme than others. At its warmest, when it is closest to the sun, Pluto can reach temperatures of minus 369 degrees Fahrenheit (minus 223 degrees Celsius). At its coolest, temperatures can fall to minus 387 degrees F (minus 233 C)

You may enter whole numbers, decimals or fractions ie: 7, 29.35, 15 3/4 and plus + or minus - signs as well. Temperature Conversion Factors Manual conversion formulas: from Fahrenheit °F to Celsius °C calculation: Subtract 32 from the Fahrenheit figure, multiply by 5, then divide by 9 to get Centigrade figure Where it will grow: Hardy to minus 40 degrees Fahrenheit, or minus 40 degrees Celsius (zones 3 to 9) Water requirement: Dry to medium soil Light requirement: Partial sun to full sun Mature size: 1 foot to 2 feet tall and 2 to 3 feet wide See how to grow aromatic aster. Chris Helzer Save Photo No matter which direction you want to covert, Fahrenheit to Celsius or Celsius to Fahrenheit, always first add 40 to the number. Next, multiply by 5/9 or 9/5 just like the first method. Then, always subtract out the 40 you just added to yield the final result For Centigrade/Celsius to Fahrenheit conversion - Double Centigrade/Celsius - then minus 10% - then add 32 - easy! Example . 40 deg Centigrade/Celsius x 2 = 80. then - 10% = 72. then plus 32 = 104 Fahrenheit. This was learned at school back in the early 70's and works well for C to F conversions. Fahrenheit to Centigrade conversion.