How temperature converter works
Convert Celsius, Fahrenheit, and Kelvin with physical range validation.
Formula and convention
F = C x 9/5 + 32. K = C + 273.15. Values below absolute zero are rejected.A worked example
20 degrees Celsius equals 68 degrees Fahrenheit and 293.15 Kelvin.
Scope and precision
Converts temperature values, not temperature differences. A one-degree Celsius interval equals a 1.8-degree Fahrenheit interval.
Displayed results may be rounded. Inputs are processed locally and are not stored by this site. Keep the original values if you need to reproduce the result.
Why might another tool give a different result?
Compare unit definitions, rounding, period assumptions, and input values. This page states the convention used by this calculator.