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Input

Online Go Playground

Runs on Go 1.13.5 · Free · No signup required

A free online Go playground for backend engineers. Write Golang, compile it, and see the result immediately — no toolchain install, no GOPATH wrangling, no signup. Go is one of the most common languages for backend services, and this playground exists for the quick checks that come up constantly while building them: how a slice behaves when you append past capacity, whether a goroutine and channel pattern deadlocks, what a struct actually marshals to. Code compiles and runs server-side against a real Go compiler, so errors you see here are the errors you would get locally. Standard input is supported for programs that read from stdin. If you are learning Go for backend work rather than just testing snippets, the playground connects to our Go projects and bootcamp track.

Go Playground — Frequently Asked Questions

How is this different from the official Go playground?
It works the same way for running code, but sits alongside backend-focused projects, courses and playgrounds for ten other server-side languages.
Can I use goroutines and channels?
Yes. Concurrency primitives run normally, though programs are subject to an execution time limit.
Is the Go playground free?
Yes, free with no account required.

Try another language

Ready to build real backends rather than test snippets? Explore backend engineering courses and projects at MasteringBackend.