What is the formula to convert Celsius to Kelvin?

The conversion from Celsius to Kelvin involves a simple adjustment based on the absolute temperature scale. To convert a temperature measured in degrees Celsius to Kelvin, you add 273.15 to the Celsius temperature. In most contexts, it is customary to round to 273 for simplicity, which is why the formula is often presented as Celsius + 273. This allows you to move from a relative scale (Celsius) to an absolute scale (Kelvin), where 0 Kelvin represents absolute zero—the point at which all molecular motion ceases.

Understanding this relationship is crucial in fields such as chemistry and physics, where precise measurements of temperature are necessary. The Kelvin scale is important because it directly relates to the kinetic energy of particles; thus, using it helps ensure accuracy in scientific calculations and experiments. The other options involve incorrect operations or concepts that do not apply to the conversion between these two temperature scales.