Temperature Converter
Temperature Converter reads a value on one of Celsius, Fahrenheit or Kelvin and gives it on another.
How to use it
- Enter a temperature reading
- Pick its scale and the scale to convert to
- Read the converted reading, shown to four decimal places
These conversions are affine, not a single factor: Fahrenheit uses (F − 32) × 5/9 to reach Celsius and C × 9/5 + 32 to leave it, and Kelvin is Celsius plus or minus 273.15. That means it converts a temperature reading, not a temperature difference — entering a 10-degree gap as "10" treats it as a point on the scale, so the result is not the equivalent interval. It does not stop you entering a value below absolute zero (0 K, −273.15 °C, −459.67 °F); the maths still runs. Only these three scales are supported — no Rankine or Réaumur — and the answer is shown to four decimal places. Everything is computed locally.
FAQ
No. It converts readings, using the full affine formula. A 10 °C interval is an 18 °F interval, but entering "10" here converts the point 10 °C and returns 50 °F.
No. There is no lower bound, so a value below absolute zero (below 0 K, −273.15 °C, −459.67 °F) still produces a number.
Celsius, Fahrenheit and Kelvin only. Rankine and Réaumur are not offered.