Temperature is a physical quantity that expresses the subjective perceptions of hot and cold. Temperature is measured with a thermometer, historically calibrated in various temperature scales and units of measurement. The most commonly used scales are the Celsius scale, denoted in °C (informally, degrees centigrade), the Fahrenheit scale (°F), and the Kelvin scale. The kelvin (K) is the unit of temperature in the International System of Units (SI), in which temperature is one of the seven fundamental base units.
its math formula is (C * 9/5) + 32
its math formula is C + 273.15
its math formula is (F - 32) * 5/9
its math formula is (F - 32) * 5/9 + 273.15
its math formula is (K - 273.15) * 9/5 + 32
its math formula is K - 273.15