# Conversions between scales

In order to express temperatures given on a certain scale to any other, a geometric similarity convention must be established.

For example, converting any given temperature to Fahrenheit scale to Celsius scale:

By the principle of geometric similarity:

Example:

What is the corresponding temperature in Celsius scale for the temperature 100 ° F?

Similarly, a Celsius-Fahrenheit conversion can be established:

And for Kelvin scale:

## Some temperatures:

Celsius Scale (° C)Fahrenheit Scale (° F)Kelvin Scale (K)
Liquefied air -39 -38,2 243
Highest Temperature on Earth's Surface 58 136 331
Lower Temperature on Earth Surface -89 -128 184
Wood combustion point 250 482 523
Paper combustion point 184 363 257
Lead Melting Point 327 620 600
Iron Melting Point 1535 2795 1808
Ice point 0 32 273,15
Mercury solidification point -39 -38,2 234
Steam point 100 212 373,15
Temperature in natural gas flame 660 1220 933
Sun's surface temperature 5530 10000 5800
Absolute zero -273,15 -459,67 0