PixelOkay
Tools
PIXELOKAY AUDIO LAB / FREE ONLINE TOOL

Instrument Tuner & Pitch Detector

Find your note. Nail your pitch. Tune confidently with a precise, private tuner that works right in your browser.

Live microphone analysis On-device processing Guitar, ukulele & more
Live tuning studioMicrophone is off
CHROMATIC DETECTION
AWAITING SIGNAL
CURRENT NOTE
—
Turn on your microphone to begin
FLAT ↙IN TUNE↘ SHARP
−50−250+25+50
DETECTED FREQUENCY— Hz
PITCH DEVIATION— cents
TARGET FREQUENCY— Hz

Signal waveform

No input
INPUT LEVEL
−∞ dBFS

Pitch stability

LAST 12 SECONDS
Your tuning trail appears here.
M Toggle microphone · R Play referenceReady when you are
Hear the reference pitchChoose a string to hear its target note.
Try it without a microphonePreview the interface using an explicitly simulated pitch.
EASY AS 1–2–3

Tuning made simple.

No app to install, no account, no complicated settings. Just accurate, responsive pitch guidance.

01

Allow your microphone

Tap Start tuning and allow access. Audio is processed in this tab, not sent to a server.

02

Pluck one string

Choose your instrument and tuning, then play a single string near the mic. Keep background sound low.

03

Follow the needle

Move toward the center. Left is flat; right is sharp. The green zone follows your chosen precision setting.

GOOD TO KNOW

Frequently asked questions

How accurate is this online instrument tuner?

It estimates monophonic pitch using the YIN algorithm and shows cents relative to an equal-tempered target. Results depend on microphone quality, room noise, instrument overtones and stable notes; it is not a calibrated laboratory frequency meter.

Why isn't the microphone working?

Microphone access generally requires HTTPS or localhost, a supported browser and your permission. Check the browser address-bar permission icon and your operating system microphone settings. Other apps may be using the device.

Can I tune bass, guitar, ukulele and violin?

Yes. Built-in presets cover guitar, ukulele, four- and five-string bass, violin, viola, cello and mandolin. Chromatic mode finds any single note, and custom tunings let you specify 1–12 open-string notes.

Does PixelOkay store or upload my microphone audio?

This tool never records or uploads microphone audio. It uses local browser audio analysis; only non-audio settings such as the selected tuning and theme may be stored on your device.

Why does a chord or very low note give a wrong result?

This tuner is designed for one sustained note at a time. Multiple simultaneous notes, strong harmonics, noisy rooms, and very low pitches can make fundamental detection ambiguous. Mute other strings and pluck again.

YOUR OWN PRESET

Create custom tuning

Enter open-string notes from lowest string to highest (or instrument order for re-entrant tunings). Include octaves, like E2, A2, D3.

Using Instrument Tuner

Choose an instrument or chromatic target, start tuning and allow microphone access. Play one clear note at a time and use the pitch and deviation display to compare it with your selected target.

Pitch estimates depend on signal quality, microphone and background noise; they are not an acoustic calibration guarantee. Live tuning needs a secure origin and explicit permission. The demo is simulated and does not measure your instrument.

Choose live pitch estimation or a simulated demo

Live tuning compares microphone pitch estimates with the selected instrument or chromatic target. The reference setting changes the tuning target; the tolerance controls how the display classifies deviation. Neither setting calibrates the microphone or removes noise.

Practice: prepare for one-note tuning

  1. Explore the clearly labeled demo to understand the display, then leave demo mode before measuring an instrument.
  2. Select the intended target and reference, start live tuning and grant microphone permission.
  3. Play one sustained note in a quiet environment, let it settle and compare repeated readings before adjusting the instrument.

This is an authored practice plan. The demo is simulated, and no microphone reading or accuracy benchmark is supplied.

Instrument tuning questions

Why does the pitch display jump or choose another octave?

Background sound, harmonics, a weak signal or several simultaneous notes can affect pitch estimation. Try one clear sustained note, reduce other sound and check the target. A changing display alone does not prove the instrument changed pitch.

Does demo mode listen to my instrument?

No. Demo values are simulated to illustrate the interface. Real tuning requires supported microphone access on a secure origin and explicit permission. Results are estimates, not calibrated hardware measurements.

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