Temperature Unit Converter

Enter a value and select a starting unit to see all available conversion results.

Temperature Units and Descriptions

Below are descriptions and historical context for each Temperature unit available in this converter.

Celsius (C)

Developed by Anders Celsius in 1742. Originally inverted (0° = boiling, 100° = freezing), later reversed.

Fahrenheit (F)

Created by Daniel Gabriel Fahrenheit in 1724. Based on brine freezing point (0°F) and human body temperature.

Kelvin (K)

Named after Lord Kelvin. Absolute temperature scale starting at absolute zero (-273.15°C).

Rankine (R)

Named after William Rankine. Absolute temperature scale using Fahrenheit degrees, starting at absolute zero.

Base Unit Conversion Factors

The table below shows the conversion factors from each unit to the base unit, which is the Celsius (C).

  • 1 Celsius (C) = 1 Celsius (C)
  • 1 Celsius (C) = 1.7999985600012 Fahrenheit (F)
  • 1 Celsius (C) = 1 Kelvin (K)
  • 1 Celsius (C) = 1.7999985600012 Rankine (R)