How many watts is 1 amp?

Could you please clarify for me the relationship between watts and amps? Specifically, I'm wondering how many watts are equivalent to 1 amp, and if this calculation varies depending on the voltage involved? I understand that watts represent power, while amps are a measure of electrical current, but I'm struggling to grasp the direct correlation between the two. Could you break it down for me in a way that's easy to understand?