100 degrees Celsius
100 °CTemperature · definition
Celsius and Fahrenheit have shifted zero points. Differences are useful; “twice as hot” in °C or °F is not a physical temperature ratio.
Temperature
Just how hot is 100 degrees Celsius?
Fire & industry
100 °C
100 degrees Celsius
Celsius and Fahrenheit have shifted zero points.
100 °CTemperature
0 K · absolute zero
Boiling water
Boiling water is water heated until it changes rapidly from liquid to steam at standard atmospheric pressure.
100 °CTemperature
0 K · absolute zero
Celsius and Fahrenheit zero points are offsets. Compare temperature differences, not ratios in °C or °F. The kelvin axis starts at absolute zero.
A little perspective
100 degrees Celsius is the same as the temperature of boiling water.
Measurements, assumptions & sources +
100 degrees Celsius
Temperature: 100 °C; definition.
Celsius and Fahrenheit have shifted zero points. Differences are useful; “twice as hot” in °C or °F is not a physical temperature ratio.
Boiling water
Temperature: 100 °C; defined reference.
Fresh water at approximately one standard atmosphere. Altitude and pressure change the boiling point.
Defined examples — our methodology
The marked temperature is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 100 degrees Celsius with the temperature of boiling water. The notes below explain how each value was chosen.
Boiling water
100 °CTemperature · defined reference
Fresh water at approximately one standard atmosphere. Altitude and pressure change the boiling point.
- Comparing
- Temperature ↔ Temperature
- Relative size
- We compare temperatures using a difference in kelvins, not a ratio.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The temperature of boiling water: This is an illustrative comparison value, not a claim that every example is the same.
Compare temperature differences in kelvins; Celsius and Fahrenheit ratios are not meaningful.
212 °Fdegrees Fahrenheit
373.15 Kkelvin
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