Calculator Suite
Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin and Rankine temperature scales
Popular Temperature Converter Conversions
Quick Presets
Base Unit Method
= Value in target unit
= Value in input unit
= Conversion factor to base
= Conversion factor from base
Category-Specific Formula
Temperature Scales
Celsius (°C) is based on water's freezing (0°) and boiling (100°) points. Fahrenheit (°F) was originally based on human body temperature as 100°. Kelvin (K) is an absolute scale starting at absolute zero.
Absolute Zero
Absolute zero (-273.15°C, -459.67°F, 0K) is the theoretical temperature where all molecular motion stops. It's the foundation for the Kelvin scale, making it ideal for scientific calculations.
Weather and Climate
Most countries use Celsius for weather, while the US uses Fahrenheit. Key reference points: water freezes at 0°C/32°F, room temperature is ~20°C/68°F, and body temperature is 37°C/98.6°F.
Scientific Applications
Kelvin is used in physics and chemistry because it's an absolute scale. The Rankine scale is the absolute version of Fahrenheit, primarily used in some engineering applications.
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