Celsius to Fahrenheit
Degrees Celsius to degrees Fahrenheit: °F = °C × 9/5 + 32. Each 1 °C step is 1.8 °F. See a lookup table, three examples and the opposite direction.
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Reading °C values on the °F scale
To read a value from the °C scale on the °F scale, the converter evaluates °F = °C × 9/5 + 32. The same expression produces each figure in the table and examples below.
Put simply, the °F figure at 0 °C is 32, and each additional °C adds 1.8 °F. For the opposite direction the formula becomes °C = (°F − 32) × 5/9.
Degrees Celsius and their value in degrees Fahrenheit
Each of the 12 rows pairs a °C reading with its °F equivalent. Neighbouring rows differ by an uneven amount in °C, so look at the formula rather than at the spacing.
| Degrees Celsius (°C) | Degrees Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -20 | -4 |
| -10 | 14 |
| 0 | 32 |
| 5 | 41 |
| 10 | 50 |
| 15 | 59 |
| 20 | 68 |
| 25 | 77 |
| 30 | 86 |
| 37 | 98.6 |
| 100 | 212 |
These figures are generated, not typed in by hand, and follow the widget's rounding rules described in the questions further down.
Three sample conversions from degrees Celsius to degrees Fahrenheit
Start with 34 °C. Apply the scale change and the offset together, and the °F reading is 93.2.
For 8 degrees Celsius, the answer is 46.4 degrees Fahrenheit. Feeding 46.4 back into the reverse formula gives 8 °C again.
Example 3. Starting from the other scale, 91 °F is 32.77777778 °C, using °C = (°F − 32) × 5/9.
Converting degrees Fahrenheit back to degrees Celsius
The mirror-image page is Fahrenheit to Celsius, where the formula is °C = (°F − 32) × 5/9. Its table and examples use degrees Fahrenheit as the starting unit.
The full Temperature Converter lets you choose any two units from the same list, not only °C and °F.
Related conversions for degrees Celsius and degrees Fahrenheit
Other pairs that use the same unit table are listed here.
Frequently asked questions
How much is 1 °C on the °F scale?
The converter gives 33.8 °F for 1 °C. Because of the offset, a different starting value does not scale in proportion; 10 °C gives 50 °F.
What does 1 °F come to in °C?
On the °C scale, 1 °F reads -17.22222222 °C. A starting value of 10 °F is -12.22222222 °C.
What is 80 degrees Celsius in degrees Fahrenheit?
80 °C is 176 °F. The converter evaluates °F = °C × 9/5 + 32 with 80 as the input.
How many decimal places does the °C to °F converter show?
Rounding happens only when a result is displayed. Between 1 and 1,000 the display has 10 significant digits, under 1 it has 8, and from 1,000 up it allows 6 decimals with comma separators; very large or very small results switch to scientific notation. Entering 0.123456789 °C shows 32.22222222 °F, and 1,234.5678 °C shows 2,254.22204 °F.
Which formula does the °C-to-°F converter use?
Both scales are defined relative to Kelvin in the unit table. Chaining those definitions for °C and °F produces °F = °C × 9/5 + 32.
How do I turn degrees Fahrenheit into degrees Celsius?
The page titled "Fahrenheit to Celsius" covers it, or you can press the swap button in the widget above. In the reverse direction the formula is °C = (°F − 32) × 5/9, giving -3.888888889 °C for an input of 25 °F.
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