#57 · Browser Audio Tool

Guitar Tuner

Estimate the nearest guitar string and tuning offset from an uploaded note or live-recorded sample.

Load a guitar note

Use a clean, sustained single note

Drop an audio file here or click to choose a supported audio file

No audio selected

Analyze fromsecondsAnalysis window

Choose an audio file to begin.

Audio is processed locally in your browser and is not uploaded.

How to use Guitar Tuner

Choose an audio file.
Adjust the tool-specific controls, then select the main action button.
Review the measured result, listen to the preview, and download the new file if useful.

What this audio tool does

Autocorrelation estimates the fundamental frequency, then the result is compared with standard E2, A2, D3, G3, B3, and E4 tuning.

The strongest stable period is selected from real waveform samples and translated into cents from the nearest guitar string.

Chords, distortion, room noise, or a very short pluck can confuse pitch detection.

Supported formats and limits

Input decoding depends on Web Audio support in the current browser. Output is WAV unless this converter explicitly uses a browser-verified MediaRecorder codec.

Stage	Details
Input	Browser-decodable audio, up to 600 MB
Processing	Local Web Audio sample data
Output	New Blob with a matching MIME type

Example and practical tips

Try guitar tuner on a short copy first, listen for artifacts, and then process the full recording. Cleaner input produces easier-to-read results.

Close other audio-heavy tabs while processing.
Keep the source file until you have checked the download.
Reset before testing a different recording.

Frequently asked questions

Which notes are standard guitar tuning?

Guitar Tuner uses the option shown above and real decoded audio data, so the best setting depends on the recording rather than a fixed preset.

How accurate is browser guitar pitch detection?

Browser audio capabilities vary. The page checks the required decoder or encoder and shows a specific error when it is unavailable.

Why does the tuner struggle with chords?

The calculation is based on samples from the selected or recorded audio, not on the filename or a simulated result.

Should I analyze the attack or sustain of a note?

Processing stays in this browser tab. Object URLs and decoded buffers are released when you reset or leave the page.

Can I tune an acoustic guitar from a recording?

Use a clean source, preview the result, and adjust the available controls if the first pass is not a good fit.

Related audio tools

Online Metronome Tone Generator Tuning Note Generator Chromatic Tuner

Processing details

Privacy	Local browser processing
Core method	The strongest stable period is selected from real waveform samples and translated into cents from the nearest guitar string.
Priority	B

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