All tools
Guitar tuner
Tune a guitar with your microphone in standard, drop D, half step down, open G or DADGAD. Free, with no account or uploads.
Tune your guitar
Press Start, allow the microphone and play one string at a time. Other tunings are under More options.
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Press Start and play a string
440 Hz is the usual pitch (ISO 16).
The microphone is asked for only when you press Start, and stopped when you press Stop or leave. The sound is read in your browser and never sent or kept.
A little help along the way
Follow these steps. Every option is explained underneath. The sound is read in your browser and never kept.
- Say what you are tuningA guitar, ukulele, bass, violin, or any note.
- Press StartAllow the microphone when the browser asks.
- Play one stringTighten when it says flat, loosen when it says sharp, until it says In tune.
Questions people ask
- Is the sound recorded or sent anywhere?
- No. The microphone is asked for only when you press Start, the sound is read in your browser as it comes, and nothing is recorded, sent or kept.
- Which tunings can it tune?
- Standard E A D G B E, drop D, half step down, open G and DADGAD, chosen under More options.
- Which way do I turn the peg?
- The page says sharp (loosen) or flat (tighten) and by how many cents; within 5 cents it says In tune.
This page is the Tuner, opened for this one job; every other tool it has is one press away. Each of its settings is explained on the Tuner's own page.
Read the step-by-step guide