Kelvin Converter
Convert Kelvin to Celsius and Fahrenheit.
How to Do It Manually
Kelvin is an absolute temperature scale. It starts at absolute zero (0 K = −273.15°C). To convert, shift by 273.15.
K = °C + 273.15 | °C = K − 273.15 | °F = (K − 273.15) × 9/5 + 32
Frequently Asked Questions
What is absolute zero?
Absolute zero is 0 K = −273.15°C = −459.67°F — the lowest theoretically possible temperature.
Why is Kelvin used in science?
Kelvin starts at absolute zero with no negative values, making equations in physics and chemistry simpler.