Playground

The Go Playground is an online place to run small Go programs without installing anything locally. It is useful for exercises and sharing reproducible examples.

Open the official Go Playground, replace its starter code with a complete program and select Run. The page compiles and executes your snippet in a controlled remote environment, then displays the result.

The Playground is designed for short demonstrations. Its environment has restrictions, and programs depending on live network access, local files or real-world clock behavior may not behave like programs on your laptop.

This example is a complete program. Save it as main.go or paste it into the Go Playground.

Go code

package main

import "fmt"

func main() {
	length := 6
	width := 4
	fmt.Println("Area:", length*width)
}

Output

Area: 24

The code declares two numbers, multiplies them and prints the area. The browser sends the source to the Playground service; the result appears below the editor without creating a local executable you manage.

• A Playground success does not mean you tested integration with your own operating system or network.
• Avoid pasting credentials, private tokens or sensitive application data into shareable examples.

Run the area program, change one dimension and predict the new output. Then use Share to create a link for a non-sensitive snippet.

Tip: Edit the example above, predict the output, and run the modified code to test your reasoning.

You have practiced Go Playground in a small, self-contained program. The important habit is to predict what runs, inspect the actual output and distinguish the language rule from the particular example.

Before continuing, make sure you can explain the program to someone who has not seen it, including the line that changes its result.