The fifth edition of D&D is fairly compatible with adventures from the first, second, and third editions of the game—enough so that quick conversions of adventures from such editions are possible. Careful conversion is the alternative. As the DM—the one who creates and runs adventures—the choice is yours.
The following sections provide guidelines for careful conversions, quick conversions, and the conversion of treasure.
Converting an adventure to fifth edition with precision requires several detailed steps. Whenever you convert in this way, use what you know about your players’ characters to guide the process. Don’t bother converting adventure elements you know your players are unlikely to notice or use.