Degrees Celsius to Degrees Fahrenheit Converter
Convert degrees Celsius (°C) to degrees Fahrenheit (°F) with the formula and table below.
Quick answer
To convert Celsius to Fahrenheit, multiply by 1.8 (or 9/5) and add 32: °F = °C × 1.8 + 32. So 20 °C = 68 °F, 37 °C = 98.6 °F and 100 °C = 212 °F.
- Formula: °F = °C × 1.8 + 32
- Example: 1 °C = 33.8 °F
- Quick estimate: double it and add 30: 20 °C → 40 + 30 = 70 °F (exact 68).
1 degree Celsius = 33.8 degrees Fahrenheit
How to convert degrees Celsius to degrees Fahrenheit
°F = °C × 1.8 + 32
This conversion is not a simple multiplication, so the size of one unit alone does not tell you the answer. Example: 16 °C = 60.8 °F. For the reverse, see degrees Fahrenheit to degrees Celsius.
Where the conversion factor comes from
The two scales have different zero points and different degree sizes. Celsius puts water's freezing point at 0 °C and boiling point at 100 °C; Fahrenheit puts them at 32 °F and 212 °F. That makes 100 Celsius degrees equal to 180 Fahrenheit degrees, so one Celsius degree is 1.8 (9/5) Fahrenheit degrees, and the 32 offset accounts for the different zero.
The scales meet at −40°: −40 °C is exactly −40 °F.
Mental math: °C to °F in your head
Double it and add 30. 25 °C → 50 + 30 = 80 °F (exact 77). The shortcut is spot-on at 10 °C (50 °F) and drifts by about 1 °F for every 5 °C away from 10, so it is fine for weather but not for cooking or medicine.For a better answer, double, subtract 10%, then add 32: 30 °C → 60 − 6 = 54 + 32 = 86 °F (exact).
Pairs worth knowing: 0 °C = 32 °F, 10 = 50, 16 = 61, 28 = 82 (the digits swap), 37 = 98.6, 100 = 212.
When you need to convert degrees Celsius to degrees Fahrenheit
- Weather forecasts when traveling to or from the US.
- Fever: normal body temperature is 37 °C (98.6 °F); 38 °C (100.4 °F) or more is a fever.
- Oven temperatures in recipes (180 °C ≈ 350 °F).
- Thermostat and pool settings.
Common mistakes
- Adding 32 before multiplying: (20 + 32) × 1.8 = 93.6 is wrong; the answer is 68 °F.
- Converting temperature differences with the +32: a rise of 10 °C is a rise of 18 °F, not 50 °F.
- Using the "double and add 30" shortcut for fevers or baking.
Everyday degrees Celsius in degrees Fahrenheit
| Example | Degrees Celsius | Degrees Fahrenheit |
|---|---|---|
| Water freezes | 0 °C | 32 °F |
| Cool spring day | 15 °C | 59 °F |
| Room temperature | 20 °C | 68 °F |
| Normal body temperature | 37 °C | 98.6 °F |
| Fever threshold | 38 °C | 100.4 °F |
| Very hot day | 40 °C | 104 °F |
| Water boils (sea level) | 100 °C | 212 °F |
| Moderate oven | 180 °C | 356 °F |
Degrees Celsius to degrees Fahrenheit conversion table
| Degrees Celsius (°C) | Degrees Fahrenheit (°F) |
|---|---|
| -50 °C | -58 °F |
| -45 °C | -49 °F |
| -40 °C | -40 °F |
| -35 °C | -31 °F |
| -30 °C | -22 °F |
| -25 °C | -13 °F |
| -20 °C | -4 °F |
| -15 °C | 5 °F |
| -10 °C | 14 °F |
| -9 °C | 15.8 °F |
| -8 °C | 17.6 °F |
| -7 °C | 19.4 °F |
| -6 °C | 21.2 °F |
| -5 °C | 23 °F |
| -4 °C | 24.8 °F |
| -3 °C | 26.6 °F |
| -2 °C | 28.4 °F |
| -1 °C | 30.2 °F |
| 0 °C | 32 °F |
| 1 °C | 33.8 °F |
| 2 °C | 35.6 °F |
| 3 °C | 37.4 °F |
| 4 °C | 39.2 °F |
| 5 °C | 41 °F |
| 6 °C | 42.8 °F |
| 7 °C | 44.6 °F |
| 8 °C | 46.4 °F |
| 9 °C | 48.2 °F |
| 10 °C | 50 °F |
| 11 °C | 51.8 °F |
| 12 °C | 53.6 °F |
| 13 °C | 55.4 °F |
| 14 °C | 57.2 °F |
| 15 °C | 59 °F |
| 16 °C | 60.8 °F |
| 17 °C | 62.6 °F |
| 18 °C | 64.4 °F |
| 19 °C | 66.2 °F |
| 20 °C | 68 °F |
| 21 °C | 69.8 °F |
More °C to °F values
- 22 °C
- 23 °C
- 24 °C
- 25 °C
- 26 °C
- 27 °C
- 28 °C
- 29 °C
- 30 °C
- 31 °C
- 32 °C
- 33 °C
- 34 °C
- 35 °C
- 36 °C
- 37 °C
- 38 °C
- 39 °C
- 40 °C
- 41 °C
- 42 °C
- 43 °C
- 44 °C
- 45 °C
- 46 °C
- 47 °C
- 48 °C
- 49 °C
- 50 °C
- 55 °C
- 60 °C
- 65 °C
- 70 °C
- 75 °C
- 80 °C
- 85 °C
- 90 °C
- 95 °C
- 100 °C
- 110 °C
- 120 °C
- 130 °C
- 140 °C
- 150 °C
- 160 °C
- 170 °C
- 180 °C
- 190 °C
- 200 °C
- 210 °C
- 220 °C
- 230 °C
- 240 °C
- 250 °C
- 260 °C
- 270 °C
- 280 °C
- 290 °C
- 300 °C
- 350 °C
- 400 °C
- 450 °C
- 500 °C
- 1,000 °C
What is a degree Celsius?
The degree Celsius (°C) is the unit of temperature used for weather, cooking and medicine in almost every country.
What is a degree Fahrenheit?
The degree Fahrenheit (°F) is the unit of temperature used for everyday purposes in the United States and a few other countries.
Convert degrees Celsius to other units
- Degrees Celsius to kelvins
- Degrees Celsius to gas marks
- Degrees Celsius to degrees Rankine
- Degrees Celsius to degrees Réaumur
- Degrees Celsius to degrees Delisle
- Degrees Celsius to degrees Newton
- Degrees Celsius to degrees Rømer
- Degrees Celsius to millikelvins
- Degrees Celsius to French oven thermostats
- Degrees Celsius to Planck temperatures
- All degree Celsius conversions →
Convert other units to degrees Fahrenheit
- Kelvins to degrees Fahrenheit
- Gas marks to degrees Fahrenheit
- Degrees Rankine to degrees Fahrenheit
- Degrees Réaumur to degrees Fahrenheit
- Degrees Delisle to degrees Fahrenheit
- Degrees Newton to degrees Fahrenheit
- Degrees Rømer to degrees Fahrenheit
- Millikelvins to degrees Fahrenheit
- French oven thermostats to degrees Fahrenheit
- Planck temperatures to degrees Fahrenheit
- All degree Fahrenheit conversions →
Frequently asked questions
How many degrees Fahrenheit are in a degree Celsius?
One degree Celsius is 33.8 degrees Fahrenheit.
How many degrees Celsius are in a degree Fahrenheit?
One degree Fahrenheit is -17.22222222 degrees Celsius.
What is the formula to convert degrees Celsius to degrees Fahrenheit?
°F = °C × 1.8 + 32.
What is 37 °C in Fahrenheit?
37 °C is 98.6 °F, the classic normal body temperature.
At what temperature are Celsius and Fahrenheit equal?
At −40: −40 °C = −40 °F.
Is 30 °C hot?
Yes: 30 °C is 86 °F, a hot summer day.