2.725 kelvin
2.725 KTemperature · 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 2.725 kelvin?
Deep cold
2.725 K
-270.42 °Cdegrees Celsius
-454.77 °Fdegrees Fahrenheit
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2.725 kelvin2.725 KTemperature · definition
02
Cosmic microwave background2.725 KTemperature · approximate
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
2.725 kelvin and Cosmic microwave background are at the same temperature.
Measurements, assumptions & sources +
2.725 kelvin
Celsius and Fahrenheit have shifted zero points. Differences are useful; “twice as hot” in °C or °F is not a physical temperature ratio.
Cosmic microwave background
The temperature of the nearly blackbody relic radiation. It is not the temperature of every object in space.
The marked temperature is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares temperature with temperature. The records below preserve each value’s basis and caveats.
Cosmic microwave background
2.725 KTemperature · approximate
The temperature of the nearly blackbody relic radiation. It is not the temperature of every object in space.
- Comparing
- Temperature ↔ Temperature
- Relative size
- Temperature comparisons use an absolute difference in kelvins rather than a multiplicative ratio.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Cosmic microwave background is labelled approximate; treat the displayed value as a comparison anchor rather than false precision.
Change your perspective
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Choose a suggestion to redraw the comparison, or open its page to learn what it is.
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