Professional Guitar Tuner
Perfect pitch reference tones with visual tuning indicator
—
0.0 Hz
Select a string
— Flat | In Tune | Sharp —
±0¢
Select a string and click play
Play the reference tone and tune your guitar to match
Tuner Features
Professional reference tones with visual feedback
🎵
Perfect Reference Tones
Pure sine wave tones at exact frequencies for each string.
📊
Visual Tuning Indicator
See exactly how far off your tuning is with the heartbeat display.
🎯
Professional Accuracy
Accurate to ±0.01 Hz for precise tuning.
📱
Works Everywhere
No microphone needed — works on any device with speakers.
⚡
Instant Feedback
See the note, frequency, and cents difference in real-time.
🌍
No Installation
Use directly in your browser — no downloads, completely free.
How to Use the Reference Tone Tuner
- Select a String: Tap the string you want to tune (E, A, D, G, B, or high E).
- Play the Reference Tone: Click “Play Reference Tone” to hear the perfect pitch.
- Watch the Visual Indicator: The heartbeat shows you the tuning status.
- Tune Your Guitar: Pluck your string and adjust the tuning peg until the heartbeat is centered and green.
- Repeat: Tune each string until your guitar is perfectly in tune.
💡 Tip: The visual indicator shows you exactly how far off you are. When the needle is centered and green, you’re in tune!
Standard Guitar Tuning – EADGBE
| String | Note | Frequency |
|---|---|---|
| 6th String | E | 82.41 Hz |
| 5th String | A | 110.00 Hz |
| 4th String | D | 146.83 Hz |
| 3rd String | G | 196.00 Hz |
| 2nd String | B | 246.94 Hz |
| 1st String | E | 329.63 Hz |
FAQs
Frequently Asked Questions
This tuner plays perfect reference tones for each guitar string. The visual indicator shows you exactly how far off your tuning is, and the heartbeat display helps you see when you’re in tune.
No! This tuner doesn’t use your microphone at all. It plays reference tones through your speakers and shows visual feedback.
The heartbeat line moves left when flat, right when sharp, and stays steady in the center when perfectly in tune. The color also changes: red (flat), yellow (sharp), green (in tune).
Absolutely! This tuner works on phones, tablets, laptops, and desktops. Just tap a string and play the reference tone.