Guitar Tuner
Free online guitar tuner using your microphone. Supports multiple tunings including standard, drop D, half step down, and more.
Guitar Tuner
Use your microphone to tune your guitar. Supports multiple tunings and reference pitches.
Select String to Tune
Click to enable microphone and start tuning
Tips for accurate tuning:
- Tune in a quiet environment for best results
- Pluck the string clearly and let it ring
- Tune up to pitch rather than down when possible
- Check tuning after adjusting all strings
How to Use
- 1Allow microphone — Click "Start Tuning" and allow microphone access when prompted.
- 2Select tuning — Choose your desired tuning (standard, drop D, etc.) from the dropdown.
- 3Select string — Click on the string you want to tune to see its target frequency.
- 4Play the string — Pluck the string and watch the tuner detect the pitch.
- 5Adjust tuning — Turn the tuning peg until the indicator shows green (in tune).
Frequently Asked Questions
How accurate is this tuner?
This tuner uses autocorrelation pitch detection and is accurate to within a few cents. For best results, tune in a quiet environment and let each string ring clearly.
What is standard guitar tuning?
Standard tuning from low to high is E-A-D-G-B-E (strings 6 to 1). The frequencies are E2 (82.4 Hz), A2 (110 Hz), D3 (146.8 Hz), G3 (196 Hz), B3 (246.9 Hz), E4 (329.6 Hz).
What is Drop D tuning?
Drop D tuning lowers the 6th string from E to D. This allows power chords to be played with one finger and is popular in rock and metal music.
Why should I tune up to pitch?
Tuning up (tightening) to pitch rather than down helps the string settle into position and stay in tune longer. If you overshoot, tune down below the note and then back up.
Can I use this for other instruments?
Yes! This is a chromatic tuner that detects any pitch. It works for bass, ukulele, violin, and any other instrument. Just ignore the string labels and tune to the detected note.