Celsius (°C)—
Fahrenheit (°F)—
Kelvin (K)—
Temperature units trip people up all the time. Recipes say 180°C while an American oven reads Fahrenheit; a science paper lists Kelvin while the weather app shows Celsius. This free temperature converter removes the guesswork. Type a value, pick the unit you have, and every other unit updates instantly — no page reload, no account, no data leaving your device.
The three scales are simple once you see the formulas. Celsius and Fahrenheit meet at -40 degrees. Kelvin starts at absolute zero, the coldest possible temperature, and is widely used in physics and astronomy. Because the math runs locally in your browser, the tool stays fast even on a weak connection and works completely offline after the first load.
Bookmark this page or tap "Add to Home Screen" to keep a temperature calculator always one tap away.
Multiply the Celsius value by 9/5 and add 32. For example, 20°C becomes (20 × 9/5) + 32 = 68°F. This tool shows all conversions at once.
Absolute zero is -273.15°C, -459.67°F, or 0 Kelvin — the point where molecular motion stops.
Yes, it runs entirely in your browser and never sends your numbers to a server.