Temperature Scale Equivalents CalculatorPHP Program by Jay Tanner Enter Temperature Value and Scale SymbolRecognized Scales:  C   F   K   R   N   Re   Ro    De Double-Click Within Text Area to Select ALL Text TABLE OF TEMPERATURE SCALE EQUIVALENTS COMMON SCALES: Celsius -17.7777777778 C Fahrehneit 0 F ABSOLUTE SCALES: Kelvin 255.3722222222 K Rankine 459.67 R OBSOLETE SCALES: Newton -5.8666666667 N Réaumur -14.2222222222 Re Rømer -1.8333333333 Ro Delisle 176.6666666667 De FORMULAS USED WITHIN THE PROGRAM Eight Temperature Scales Are Recognized ------------------- SYMBOL SCALE ------ ----------- F Fahrenheit C Celsius R Rankine K Kelvin Re Réaumur Ro Rømer N Newton De Delisle ------------------------------------------------- STEP 1: Compute K-scale Equivalent to Input Temperature The scale symbols below represent the numerical values on those scales in the formulas. Given any temperature on one of the eight scales, to compute its K-scale equivalent: K = C + 273.15 K = (F - 32)*5/9 + 273.15 K = K K = (R - 491.67)*5/9 + 273.15 K = Re*5/4 + 273.15 K = (Ro - 7.5)*40/21 + 273.15 K = N*100/33 + 273.15 K = 373.15 - De*2/3 ------------------------------------------------- STEP 2: Compute table of equivalents on all eight scales, based on the K-scale value, using the formulas given below to compute the tabulated values. C = K - 273.15 F = (K - 273.15)*9/5 + 32 K = K R = (K - 273.15)*9/5 + 491.67 Re = (K - 273.15)*4/5 Ro = (K - 273.15)*21/40 + 7.5 N = (K - 273.15)*33/100 De = (373.15 - K)*3/2 ------------------------------------------------- CAVEAT: A warning will be displayed in RED text if the input temperature equates to any value below absolute zero (0.0 K or 0.0 R). There are no negative temperatures on the absolute scales, by definition, but the computations will still be performed anyway. Temperature Scale Conversions Wiki-Ref Program by Jay TannerRevised: Thursday, January 01, 1970 at 12:00:00 AM UTC