Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and Rankine temperature scales.
What is Temperature?
Temperature measures the average kinetic energy of the particles in a substance — how fast the atoms or molecules are vibrating. Four scales dominate practical use: Celsius (anchored at water's freezing point 0°C and boiling point 100°C at sea level — the global standard outside the US), Fahrenheit (anchored at brine freezing 0°F and human body 96°F in the original Fahrenheit definition — still standard in the US), Kelvin (the SI scale starting at absolute zero, 0 K = −273.15°C — the standard in physics and chemistry), and Rankine (an absolute Fahrenheit scale used in some US engineering contexts). Conversions are linear: °F = °C × 9/5 + 32, K = °C + 273.15. This converter handles all four with live updates. Working with related units? Use the Length Converter for distance or the Weight Converter for mass.
Temperature Converter
From
Celsius (°C)
To
Fahrenheit (°F)
Result in Fahrenheit
32 °F
°F = (°C × 9/5) + 32
All Conversions
0 °C
32 °F
273.15 K
491.67 °R
Reference Points
How to use this tool
- 1Type a value into any unit fieldEnter a number in Celsius, Fahrenheit, Kelvin, or Rankine — whichever you have.
- 2Read the live conversionsAll four scale fields update instantly with the equivalent temperature.
- 3Check the reference pointsThe reference panel shows freezing, boiling, body temperature, and absolute zero on each scale for sanity-checking your input.