What is the maximum level you can have in a single class in Dungeons and Dragons (5e)?

In Dungeons and Dragons 5th Edition, the maximum level you can have in a single class is 20. This is because the game is designed with a progression system that includes a total of 20 levels for each class, allowing players to advance their character's abilities, skills, and spells up to that cap. This limitation ensures a balanced and structured gameplay experience, with each class having access to a defined set of features and powers, and prevents the characters from becoming too powerful or unbalanced.