Guitar Tuner
Play one string at a time, from the thickest (low E) to the thinnest (high E), and turn the tuning peg until the needle is in the middle. Other instruments and tunings are in the list.
How to use it
- Press the button and allow the microphone.
- Choose the instrument, or chromatic mode for any note.
- Play one string and adjust it until the needle is in the middle and turns green.
Frequently asked questions
How accurate is the tuner?
It uses the YIN pitch detection algorithm and was tested with synthetic notes from 41 Hz to 1,760 Hz, with errors below a quarter of a cent; with background noise it stays within a few cents. In a quiet room it is as precise as a clip-on tuner.
Should I use 440 Hz or 432 Hz?
A4 = 440 Hz is the international standard used by almost all bands and recordings. Some orchestras tune a little higher, at 442 or 443 Hz. Use 432 Hz only if you are playing with others tuned that way.
Is the sound recorded?
No. The microphone signal is analysed in your browser a few times per second and immediately discarded; nothing is stored or sent to a server.
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