Unit Kit
Free Temperature Converter — Celsius, Fahrenheit & Kelvin
Convert between Celsius, Fahrenheit, and Kelvin. Accurate formulas, instant results, no sign-up required.
FAQ
What temperature units are supported?
Three units: Celsius (°C), Fahrenheit (°F), and Kelvin (K).
What is the formula for Celsius to Fahrenheit?
°F = (°C × 9/5) + 32. For example, 0°C = 32°F and 100°C = 212°F.
At what temperature are Celsius and Fahrenheit equal?
-40 degrees. -40°C = -40°F.
What is absolute zero?
Absolute zero (0 K = -273.15°C) is the theoretical lowest possible temperature where all molecular motion stops.
Why is Kelvin used in science?
Kelvin starts at absolute zero and has no negative values, making it ideal for scientific calculations involving ratios and proportions.