Web Tools
Brainfuck Interpreter
Execute Brainfuck programs with memory visualization, step counting, and configurable limits. See output, memory state, and execution statistics in real time. Runs entirely in your browser — your data never leaves your machine.
brainfuck interpreter esoteric programming turing
Published May 31, 2026
All interactive tools run entirely in your browser. Your data never leaves your device.
How It Works
Write or paste a Brainfuck program and see it execute instantly. The interpreter shows program output, memory cell values, pointer position, and execution statistics. Configurable step limits prevent infinite loops from freezing the page.
Features
- Full interpreter: supports all 8 Brainfuck commands (
><+-.,[]) - Memory visualization: see cell values with pointer position highlighted
- Step counter: track how many operations the program executes
- Configurable limits: set max steps from 10K to 1M to control infinite loops
- Program input: provide stdin data for
,commands - 5 examples: Hello World, cat (echo), addition, counter, simple loop
- Private: runs entirely in the browser — your data never leaves your machine
Use Cases
- Learning about Turing completeness with a minimal language
- Understanding how loops and memory-mapped computation work
- Debugging Brainfuck programs step by step
- Educational tool for computer science concepts