299,792,458 meters per second (m/s)

This value is often rounded to 3 x 10⁸ m/s for easier calculations.

It's important to note that:

* Light travels at different speeds in different mediums. For example, light travels slower in water or glass than in a vacuum.

* The speed of light is a fundamental constant in physics and plays a crucial role in many theories, including Einstein's theory of special relativity.