Interconversion Formulas Used
The input temperature argument is internally converted into its equivalent on the Kelvin (K) scale and then that value is, in turn, converted into its equivalent on all the other scales and the computed results displayed. Applying the mathematical definition, absolute zero means the absence of all heat, thus there cannot be any negative temperatures on either of the absolute (K or R) scales. The program will report temperatures that equate to below absolute zero as an error.

Jay Tanner  2018 