JavaScript Benchmark Tool

Runs in your browser — nothing is uploaded

Iterations per snippet

About this tool

Write 2 or more JavaScript snippets and compare how fast they run — a mini jsPerf, right here.

Each snippet runs in an isolated Web Worker in your own browser (no access to this page's cookies, storage, or DOM) — nothing is sent to our servers. You're still running your own code in your own browser, same as opening dev tools, so only run snippets you trust.

Frequently asked questions

What is JavaScript Benchmark Tool?

Compare the execution speed of 2+ JS snippets, run in an isolated Web Worker. It is one of the Browser & Device tools on MyCodeTips.

How do I use JavaScript Benchmark Tool?

Open the tool, enter or paste your input, and the result appears right away. Use the Copy button to copy it.

Is JavaScript Benchmark Tool free to use?

Yes. It is free to use and does not need an account.

Is my data safe with JavaScript Benchmark Tool?

Yes. It runs entirely in your browser, so what you enter is never uploaded to our servers.

Can I share my result?

Yes. Use the share buttons below the tool to post a link or copy a link to the tool page.