0 °C equals 32 °F. 100 °C equals 212 °F.
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 50 °C | 122 °F |
| 100 °C | 212 °F |
| 200 °C | 392 °F |
| 500 °C | 932 °F |
Temperature scales use fixed reference points rather than multiplicative factors, so converting between them requires a formula rather than simple multiplication. The Celsius and Fahrenheit scales differ in both their zero point and the size of their degrees.
For example: 0 °C = 32 °F, and 100 °C = 212 °F.
To convert in the reverse direction (Fahrenheit to Celsius): °C = (°F − 32) × 5/9
The Celsius scale (°C) was developed by Swedish astronomer Anders Celsius in 1742, though his original scale ran backwards from today's — he set 0 at the boiling point of water and 100 at freezing. The scale was inverted after his death to the familiar orientation, sometimes attributed to Carl Linnaeus. The Celsius scale anchors its two primary reference points to pure water: 0°C for the freezing point and 100°C for the boiling point at standard atmospheric pressure (101.325 kPa).
Celsius is the official temperature scale for everyday use in almost every country in the world, and the scientific community uses it alongside the Kelvin scale for all but the most fundamental thermodynamic calculations. Weather forecasts, medical thermometers, oven settings, refrigerator temperatures, and industrial process controls in metric countries all use Celsius. A comfortable room temperature is around 20–22°C; normal human body temperature is 37°C; and water, the most important liquid for life, boils at 100°C at sea level.
In the SI system, temperature differences and increments are the same in Celsius and Kelvin — a change of 1°C is identical to a change of 1 K. The Kelvin zero (absolute zero, −273.15°C) represents the lowest possible temperature, where molecular motion theoretically ceases entirely. The practical advantage of Celsius over Kelvin for everyday use is that the numbers are smaller and more intuitive for describing conditions on Earth's surface.
The Fahrenheit scale was proposed by German physicist Daniel Gabriel Fahrenheit in 1724. His original zero point was set to the lowest temperature he could achieve with a mixture of ice, water, and ammonium chloride (a freezing brine), and 96°F was intended to correspond to human body temperature (later revised to 98.6°F as the scale was refined). Water freezes at 32°F and boils at 212°F under standard conditions — a 180-degree span between those reference points.
Today, Fahrenheit is the official temperature scale for everyday use in the United States, the Cayman Islands, Liberia, and a handful of other jurisdictions. The US National Weather Service reports temperatures in Fahrenheit; US cooking recipes specify oven temperatures in Fahrenheit; and American climate discussions refer to heatwaves breaking 100°F. Most Americans have an intuitive sense of Fahrenheit temperatures the way most of the world has for Celsius.
One argued advantage of Fahrenheit over Celsius for weather reporting is that the 0–100°F range maps more neatly onto typical human weather experience: near 0°F is very cold, near 100°F is very hot, and the middle (50°F) is a cool but livable day. In Celsius, that same experience runs from about −18°C to 38°C, numbers that feel less naturally centered on human experience. This is likely one reason the Fahrenheit scale has been culturally resilient despite metrication pressure.
Use the formula: °F = (°C × 9/5) + 32. For example, 0 °C = 32 °F and 100 °C = 212 °F.
0 °C equals 32 °F.
100 °C equals 212 °F.