Temperature Converter

Temperature Converter is a free online tool that instantly converts temperatures between four scales: Celsius, Fahrenheit, Kelvin, and Rankine. Whether you are a student studying thermodynamics, a scientist working with absolute temperature scales, a cook following a recipe from another country, or a traveler checking weather forecasts abroad, this tool provides accurate conversions in real time as you type. The Celsius scale is used by most countries worldwide and is defined by the freezing point (0 degrees C) and boiling point (100 degrees C) of water at standard atmospheric pressure. The Fahrenheit scale, primarily used in the United States, sets these same reference points at 32 degrees F and 212 degrees F. The Kelvin scale is the SI base unit of temperature used in science, starting from absolute zero (0 K = -273.15 degrees C). The Rankine scale is the absolute temperature scale corresponding to Fahrenheit, used in some engineering fields. Unlike many other unit conversions that use simple multiplication factors, temperature conversions involve offsets. This tool correctly handles these non-linear formulas so you never have to remember whether to add or subtract 32 before or after multiplying by 5/9. All calculations run entirely in your browser with no data sent to any server.