How to use Guitar Tuner
1
Select Instrument
Choose your instrument from guitar, bass, ukulele, or violin. Each has pre-configured standard tuning.
2
Allow Microphone
Grant microphone access when prompted. The tuner uses real-time audio analysis to detect pitch.
3
Tune Your String
Play a string and watch the cents deviation. Adjust until the indicator turns green (±10 cents).
Key Features
Real-Time Detection
Advanced WebAudio API with autocorrelation algorithm for instant, accurate pitch detection.
Cents Precision
Shows exact deviation in cents (+/-) with visual feedback when you hit the perfect pitch.
Auto String Matching
Automatically identifies and highlights the closest string to the detected pitch.
Multiple Instruments
Supports guitar, bass, ukulele, and violin with standard tuning configurations.
Frequently Asked Questions
Is this tuner accurate?
Yes! This tuner uses professional-grade autocorrelation pitch detection with cents precision. It's accurate within ±1 cent for clear signals.
What does "cents" mean?
A cent is a unit of musical pitch. 100 cents = one semitone. The tuner shows how many cents sharp (+) or flat (-) you are from the target note. Within ±10 cents is considered in tune.
Does it work on mobile devices?
Absolutely! This tuner works on any device with a microphone and a modern browser. Perfect for tuning on the go.
Is my audio data private?
Yes, 100% private. All audio processing happens directly in your browser. No audio data is uploaded to any server.
Can I use this for chromatic tuning?
Yes! The tuner detects any note in the chromatic scale and automatically matches it to the closest string for your selected instrument.