To convert means to change something from one form, purpose, or belief into another. When you convert inches to centimeters in math class, you're changing the measurement from one system to another while keeping the actual distance the same. When a factory converts raw materials like wood pulp into paper, it transforms one substance into something completely different.

The word shows up in many contexts. A basketball player converts a free throw when they successfully make the shot. An old warehouse might be converted into apartments, giving the building a whole new purpose. Someone might convert dollars into euros before traveling to Europe.

The word also applies to beliefs: when someone converts to a new religion, they adopt its practices and ideas. This kind of conversion represents a deep personal change in how they understand and practice their faith.

In all these uses, convert captures the idea of transformation: something becoming different while maintaining some core connection to what it was. A converter is a device or person that converts things, and a convert is a person who has changed to a new belief, especially a religion. A conversion is the act or result of converting.