Brainfuck Runner
Execute Brainfuck code in your browser. Pure JavaScript interpreter with step limit protection — no server required.
Brainfuck Code
Output
// Write Brainfuck and click Run
Frequently Asked Questions
Brainfuck is an esoteric programming language with only 8 commands: ><+-.,[]. It operates on a tape of memory cells using a pointer.
> move pointer right < move pointer left + increment cell - decrement cell . output char , input char [/] loop while cell != 0
No. The interpreter runs entirely in your browser as pure JavaScript.