What is 325 Kelvin in Degrees Celsius?

The temperature 325 K is equal to about 51.85 °C

The starting point (zero) for Kelvin is at -273.15 °C, so any temperature in Kelvin has a value 273.15 less on the Celsius scale. Similarly, Celsius temperatures are increased by that amount when expressed in kelvins. The two scales use the same size for a degree, unlike the Fahrenheit scale.