Chromatic Tuner
Tune any instrument using your mic — see the note and cents in real time.
Microphone blocked 🔒
Allow mic access for this site (click the 🔒 / camera icon in your address bar), then press Start tuner again.
Mic tuning isn't available here
Your browser doesn't support live audio input (or the page isn't on HTTPS). You can still use the reference tones below to tune by ear.
Couldn't start the microphone
Chromatic mode detects any note across the full range — great for piano, vocals, brass and more.
100% private — audio is analysed on your device and never leaves your browser.
Best with a quiet room and the instrument close to the mic. Green needle = in tune (±5¢).
Why you’ll love Chromatic Tuner
Instant & free
No signup, no paywall, no limits — Chromatic Tuner works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Instant sound
Plays in real time in your browser via the Web Audio API — headphones recommended.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
Frequently asked questions
Chromatic Tuner is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
Browsers require a single tap before playing audio. After that first tap, everything works instantly.
Completely. Chromatic Tuner runs entirely in your browser (client-side). Nothing you type, upload or generate is sent to our servers, so your data never leaves your device.
No. It works instantly in any modern web browser — Chrome, Safari, Edge or Firefox — on desktop and mobile.
Yes. The tool is fully responsive and touch-friendly, so it works great on phones and tablets as well as computers.
Global Maple System — a software & AI studio. We built Chromatic Tuner (and 200+ other free tools) to show what we can do. Need something custom built? We’d love to help.
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Chromatic Tuner is one of 200+ free tools from Global Maple System — a software & AI studio. Need a website, app, AI agent or automation? Let’s talk.