Karma is a measure of your character’s morality in Fallout 3. It can range from -1000 (completely evil) to 1000 (completely good). Your karma affects how NPCs interact with you, and it can also determine which quests you can access. There are a number of ways to check your karma in Fallout 3, including:
Checking your Pip-Boy: Your Pip-Boy will display your current karma level in the “Stats” menu.
-Talking to NPCs: Some NPCs will tell you your karma level when you talk to them.
-Using the “karma” console command: You can enter the “karma” console command to display your current karma level.