What is 265 degrees Celsius in Fahrenheit? 265 c equals 509 f 509 Fahrenheit  The C to F formula is (C * 9/5) + 32 = F 265 x 9 = 2385 265 / 5 = 477 477 + 32 = 509 265 degrees Celsius equals 509 degrees Fahrenheit. 265ctof 265c to f Celsius Fahre