Online Turing Machine Simulator

Design, step-through, and debug multi-tape Turing machines directly in your browser.

How to Use This Turing Machine Simulator

This sandbox allows you to write, compile, and visualize formal computation models using Varphi, a description language for Turing machines.

Features of this simulator:

What is a Turing Machine?

Invented by Alan Turing in 1936, a Turing machine is a foundational mathematical model of computation. It consists of an infinite tape divided into discrete cells, a head that reads and writes symbols, and a finite set of states dictating its actions based on a transition function. Despite its simplicity, it is capable of simulating the logic of any computer algorithm!

Frequently Asked Questions

Where can I read more about Varphi?

Complete documentation on Varphi is available here.

Can this simulator handle multi-tape Turing machines?

Yes! The Varphi compiler automatically detects the required tapes based on your source code and generates the multi-tape user interface accordingly.

Does the computation run in the browser or on a server?

It runs 100% in your browser. The Varphi compilation and simulation happen locally on your machine, ensuring zero latency and complete privacy.