Temperature Converter
Convert Celsius, Fahrenheit, Kelvin and Rankine accurately, including negative temperatures.
How to use
- 1Enter a temperature and pick its scale.
- 2Pick the scale to convert to.
How it's calculated
°F = °C × 9/5 + 32. K = °C + 273.15. °R = K × 9/5.
Frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 (1.8) and add 32. For example 25 °C × 1.8 + 32 = 77 °F.
At what temperature are Celsius and Fahrenheit equal?
At −40. Minus 40 °C is exactly minus 40 °F.
What is absolute zero?
0 K, which is −273.15 °C or −459.67 °F — the lowest temperature possible.