temperature converter
convert temperatures between celsius, fahrenheit, kelvin and rankine instantly.
runs on your device · free · no sign-up
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frequently asked questions
how do i convert celsius to fahrenheit?
multiply by 9/5 and add 32: °F = °C × 1.8 + 32.
what is absolute zero?
0 K, which is −273.15 °C or −459.67 °F.
why do both scales read the same at −40?
the two lines cross there, so −40 °C equals −40 °F.