Convert temperatures between Kelvin, Celsius and Fahrenheit. Enter a value, choose its scale, and get the other two instantly. Kelvin is the SI absolute scale where 0 K is absolute zero.
Kelvin and Celsius share the same degree size, so converting is just a 273.15 shift: °C = K − 273.15. Kelvin starts at absolute zero, the coldest possible temperature, so it never goes negative.
Fahrenheit uses a different degree size and offset: °F = °C × 9/5 + 32. This converter takes any one scale and returns all three, which is handy in physics where absolute temperature (Kelvin) is required for gas laws and thermodynamics.
Subtract 273.15: °C = K − 273.15. For example, 300 K = 26.85 °C. To go back, add 273.15.
Absolute zero is the temperature at which particle thermal motion is minimal. It defines 0 on the Kelvin scale, which corresponds to −273.15 °C.
Yes. Kelvin and Celsius degrees are identical in size, so a temperature difference of 1 K equals a difference of 1 °C. They differ only in where zero sits.
Multiply by 9/5 (1.8) and add 32: °F = °C × 1.8 + 32. So 26.85 °C = 80.3 °F.