Instrument Tuner

Overview

A chromatic tuner that gets low notes right. On a bass, a low guitar string or most reeds, the harmonics are often louder than the note itself, and many tuners jump an octave just as you're trying to tune. This one uses YIN pitch detection, which follows the period of the sound, so that doesn't happen. The needle is smoothed and holds between plucks, so it settles like a real one. Set the reference anywhere from 415 to 450 Hz.

Tune a guitar or bassIt's chromatic, so any tuning works: drop D, open G, five-string bass.
Tune to an ensembleSet the reference to the pitch your group plays at.
Check intonationPlay up the neck and see how far each position drifts.

Set

Audio Tools 17

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Specification

Command: audio.tuner
Set: Audio
Input: MIXED
Output: —
Max file: 1GB
Batch: single file

MPEG WAV FLAC MP4 OGG OPUS AAC WEBM

Runtime

Engine: ffmpeg-wasm 0.12
Threads: — workers
Isolated: —
WebGPU: —
Memory: —

Transport 0 B

Your file is opened, worked on and saved inside this tab. This tool has no upload step, so your file has nowhere else to go.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/

How it works

Allow the microphone

It only asks when you press the button, never on load.

Play a note

You see the note name and how many cents sharp or flat it is.

Watch the needle

Turn the peg until the needle sits in the marked band, which means within five cents.

Frequently asked

Which instruments does this work with?

Anything that plays a pitched note: guitar, bass, violin, cello, ukulele, brass, woodwind or voice. It's chromatic, so it finds whatever note you play.

Why does it not jump an octave like other tuners?

It uses YIN, which follows the repeating period of the sound instead of its loudest frequency. On basses, low guitar strings and many reeds, the harmonics are louder than the base note, so other tuners often show the wrong octave. This one doesn't.

Can I tune to something other than A440?

Yes. Set the reference anywhere from 415 to 450 Hz: 415 for baroque, 442 or 443 for many European orchestras.

Is anything recorded?

No. The sound is analysed as it comes in and then thrown away. Nothing is stored or uploaded, and the microphone turns off when you stop.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/