Convert between different temperature units
Convert between Celsius, Fahrenheit, and Kelvin — the three most commonly used temperature scales.
The formula is F = (C x 9/5) + 32. Our tool calculates this instantly for any value.
Kelvin is used in scientific contexts, particularly in physics, chemistry, and engineering calculations.
Celsius and Fahrenheit are equal at -40 degrees. At this point, -40°C equals exactly -40°F. This is the only temperature where both scales intersect, and it can be derived by solving the equation F = (C × 9/5) + 32 where F = C.
Absolute zero is 0 Kelvin, which equals -273.15°C or -459.67°F. It is the lowest possible temperature where all molecular motion ceases. No object can be cooled below absolute zero, making it a fundamental limit in thermodynamics.