Random letter generator

Type how many letters you want, up to 500, and each appears on its own line. Retype the number to pick again. The Characters setting switches between capitals, lowercase and both.

To pick from a shorter list, choose Your characters and type the letters into the box beside it. AEIOU gives a random vowel, and leaving out letters such as Q, X and Z avoids the awkward ones in a word game. Set Length above 1 for random runs of letters, such as made-up codes.

Yes. Your browser's crypto.getRandomValues makes a random number, and the generator keeps its remainder after dividing by 26. Numbers from the last, incomplete block are thrown away and drawn again, because otherwise a few letters would come up very slightly more often. Each letter has exactly a 1 in 26 chance.

Each pick is independent, so the same letter can come up twice in a row, with a 1 in 26 chance each time. A list with no repeats is a shuffle, not a run of picks. For that, type the letters into Your characters with Length set to 1, and remove each one as it comes up.