How do I find YouTube channel ID?

The YouTube Channel URL will be in the following format:

https://www.youtube.com/channel/UC29ju8bIPH5as8OGnQzwJyA

The last part of the hyperlink is the ID of this channel i.e. UC29ju8bIPH5as8OGnQzwJyA 

Below is an example:

YouTube Channel URL: https://www.youtube.com/channel/UCK8sQmJBp8GCxrOtXWBpyEA

YouTube Channel ID: UCK8sQmJBp8GCxrOtXWBpyEA.