This tool is based on the work of user Arachobia on RPG Crossing with his permission. He had taken a list of tables from Dragon magazine #422 in an article called "Building Character" by Matt Sernett and updated them for 5th edition. I've turned them into an automatic tool for generating a characters background.

Instructions: Refresh the page to generate a new background story. As always, you can use it however you like and fill in your own details. Your age and acquired proficiencies are listed at the bottom and are based on the results you got. Try to pick a Race/Class/Background combo that fulfills all the proficiencies. Your age may also result in ability score modifiers that can be applied after building your character.

...or ignore everything and do whatever you want. Whatever.
Background Generator

(T.101): One of your parents was a scholar and teacher. You will have proficiency in History.

(T.102): One of your parents was an undertaker.

(T.2): An identical twin.

(T.3): You were kidnapped and enslaved. Roll on Table 16

(T.16): You are forced to mine for precious minerals underground. You will have training in Nature from developing a good knowledge of terrain. One day you become lost and have to find your way out on Table 25.

(T.25): You discover the lair of a villain beneath the earth: roll on Table 5 to see which villain. You steal a map to treasure from the villain's lair and sneak back to the surface using their own tunnels. You will have proficiency in Stealth. You begin your life of adventure with the map in your possession.

    >>>> (T.5): A wizard (again! Hey, it’s a trope).


Total Rolls: 7
Your age is TEENAGER
Teenagers are dexterious and hardy, and often are cocky enough to be quite assertive and convincing. Unfortunately, this does not translate into 'real' wisdom or intelligence, and a teenagers body still has some growth to do before they'll be at peak strength.
+1 CHA, +1 DEX, +1 CON, -1 INT, -1 WIS, -1 STR

Proficiencies:
History
Nature
Stealth