Zig Playground Online

Free Zig playground and online compiler. Write, compile, and run Zig code in your browser with no install. Practice comptime, allocators, C interop, and systems programming with immediate feedback.

main.zig
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Run Zig code online with no install

Use this Zig playground as an online compiler for small programs, comptime experiments, allocator practice, and examples from the free Zig course.

  • Compile and run Zig snippets without installing Zig locally.
  • Practice comptime, allocators, error unions, pointers, and C interop.
  • Move from quick experiments into the 25-lesson Zig systems programming course.

Hello World

main.zig
const std = @import("std");

pub fn main() !void {
    const stdout = std.io.getStdOut().writer();
    try stdout.print("Hello, Zig!\n", .{});
}

Practice with guided lessons

Take the same concepts from the playground into focused exercises.

Browse all lessons

Introduction to Zig

Learn how to install Zig and get started with systems programming — covers setup on macOS, Linux, and Windows plus your first program

Memory and Allocators

Understand Zig memory management — compare stack vs heap allocation, use allocator interfaces, and avoid leaks with explicit manual memory control.

Zig Comptime — Compile-Time Programming Guide

Zig comptime tutorial — learn compile-time evaluation, comptime parameters, type reflection, and how to write generic zero-cost abstractions. Free tutorial with runnable examples.

Zig C Interop — Call C from Zig Guide

Call C from Zig with zero overhead — use @cImport to include C headers, link C libraries, and pass data between Zig and C seamlessly. Free tutorial with examples.

Ready for structured learning?

Follow our step-by-step lessons to build a solid foundation.

Start first lessonBrowse all lessons

Zig playground FAQ

Can I run Zig code online here?
Yes. The playground compiles and runs Zig programs online, then returns stdout, stderr, and compiler feedback.
Is this an online Zig compiler?
Yes. It is a browser-based Zig playground and online compiler for small learning examples and experiments.
Can I practice comptime in the playground?
Yes. Comptime examples are a strong fit because you can edit and run small Zig programs quickly.

Your code runs in a secure, isolated sandbox powered by OmniRun — no containers, just hardware-isolated microVMs.