There isn't a single "formula" for degrees Celsius. It's a unit of measurement for temperature, like Fahrenheit or Kelvin.

However, you might be thinking about how to convert between different temperature scales. Here are the common conversions:

* Celsius to Fahrenheit: °F = (°C × 9/5) + 32

* Fahrenheit to Celsius: °C = (°F - 32) × 5/9

* Celsius to Kelvin: K = °C + 273.15

* Kelvin to Celsius: °C = K - 273.15

Let me know if you have a specific conversion you'd like help with!