Online Guitar Tuner
Free Guitar tuner with microphone. Standard tuning: E2 A2 D3 G3 B3 E4
dB
dB12243648
♯
---.- HZ--.- C
-50-200+20+50
Guitar tunings
| Tuning | Notes (low → high) | Frequencies |
|---|---|---|
| Standard (E A D G B E) | E2 A2 D3 G3 B3 E4 | 82.4 Hz, 110.0 Hz, 146.8 Hz, 196.0 Hz, 246.9 Hz, 329.6 Hz |
| Drop D (D A D G B E) | D2 A2 D3 G3 B3 E4 | 73.4 Hz, 110.0 Hz, 146.8 Hz, 196.0 Hz, 246.9 Hz, 329.6 Hz |
| Half Step Down (Eb Ab Db Gb Bb Eb) | D#2 G#2 C#3 F#3 A#3 D#4 | 77.8 Hz, 103.8 Hz, 138.6 Hz, 185.0 Hz, 233.1 Hz, 311.1 Hz |
| Open A (E A E A C# E) | E2 A2 E3 A3 C#4 E4 | 82.4 Hz, 110.0 Hz, 164.8 Hz, 220.0 Hz, 277.2 Hz, 329.6 Hz |
| Open C (C G C G C E) | C2 G2 C3 G3 C4 E4 | 65.4 Hz, 98.0 Hz, 130.8 Hz, 196.0 Hz, 261.6 Hz, 329.6 Hz |
| Open D (D A D F# A D) | D2 A2 D3 F#3 A3 D4 | 73.4 Hz, 110.0 Hz, 146.8 Hz, 185.0 Hz, 220.0 Hz, 293.7 Hz |
| Open G (D G D G B D) | D2 G2 D3 G3 B3 D4 | 73.4 Hz, 98.0 Hz, 146.8 Hz, 196.0 Hz, 246.9 Hz, 293.7 Hz |
| DADGAD | D2 A2 D3 G3 A3 D4 | 73.4 Hz, 110.0 Hz, 146.8 Hz, 196.0 Hz, 220.0 Hz, 293.7 Hz |
| Full Step Down (D G C F A D) | D2 G2 C3 F3 A3 D4 | 73.4 Hz, 98.0 Hz, 130.8 Hz, 174.6 Hz, 220.0 Hz, 293.7 Hz |
| Drop C (C G C F A D) | C2 G2 C3 F3 A3 D4 | 65.4 Hz, 98.0 Hz, 130.8 Hz, 174.6 Hz, 220.0 Hz, 293.7 Hz |
| Drop B (B F# B E G# C#) | B1 F#2 B2 E3 G#3 C#4 | 61.7 Hz, 92.5 Hz, 123.5 Hz, 164.8 Hz, 207.7 Hz, 277.2 Hz |
| Drop A (A E A D F# B) | A1 E2 A2 D3 F#3 B3 | 55.0 Hz, 82.4 Hz, 110.0 Hz, 146.8 Hz, 185.0 Hz, 246.9 Hz |
| Double Drop D (D A D G B D) | D2 A2 D3 G3 B3 D4 | 73.4 Hz, 110.0 Hz, 146.8 Hz, 196.0 Hz, 246.9 Hz, 293.7 Hz |
| Open E (E B E G# B E) | E2 B2 E3 G#3 B3 E4 | 82.4 Hz, 123.5 Hz, 164.8 Hz, 207.7 Hz, 246.9 Hz, 329.6 Hz |
| All Fourths (E A D G C F) | E2 A2 D3 G3 C4 F4 | 82.4 Hz, 110.0 Hz, 146.8 Hz, 196.0 Hz, 261.6 Hz, 349.2 Hz |
How to tune your Guitar
- Click Start Tuning above and allow microphone access.
- Play one string (or note) at a time, close to the microphone.
- The tuner shows the nearest target note and how many cents you are off.
- Tighten to raise the pitch, loosen to lower it, until the display turns green.
Need a different tuning? Use the tuning selector above the display — every preset is free. You can also lock any note by clicking it, which is handy when a string is far from its target.