Metrication in the United States is about using a system of measurement that is different from the one we currently use. Right now, we use a system called the "Imperial system," which includes measurements like inches, feet, yards, and miles.
The metric system is a different system of measurement that uses units like meters, grams, and liters. It's used in most other countries around the world, and it's generally easier to use because all the units are related to each other in a consistent way.
The idea of using the metric system in the United States has been around for a long time, but it hasn't been fully adopted yet. This means that some things in the US, like soda cans or snack bags, might have both Imperial and metric measurements on them.
One reason why the US hasn't fully switched to the metric system is because it would be a big change, and change can be difficult. For example, people would have to learn a whole new set of measurements, and it might be confusing at first.
Overall, metrication in the United States is about switching to a different way of measuring things. While it hasn't happened yet, it could be something that happens in the future.