liminfoGuitar Tuner
Free web tool: Guitar Tuner
6th (Low)
E2
82.41 Hz
5th
A2
110.00 Hz
4th
D3
146.83 Hz
3rd
G3
196.00 Hz
2nd
B3
246.94 Hz
1st (High)
E4
329.63 Hz
All Tunings Comparison
| Tuning | 6th (Low) | 5th | 4th | 3rd | 2nd | 1st (High) |
|---|---|---|---|---|---|---|
| Standard | E2 | A2 | D3 | G3 | B3 | E4 |
| Drop D | D2 | A2 | D3 | G3 | B3 | E4 |
| DADGAD | D2 | A2 | D3 | G3 | A3 | D4 |
| Open G | D2 | G2 | D3 | G3 | B3 | D4 |
| Open D | D2 | A2 | D3 | F#3 | A3 | D4 |
| Open E | E2 | B2 | E3 | G#3 | B3 | E4 |
| Open A | E2 | A2 | E3 | A3 | C#4 | E4 |
| Drop C | C2 | G2 | C3 | F3 | A3 | D4 |
| Half Step Down | Eb2 | Ab2 | Db3 | Gb3 | Bb3 | Eb4 |
| Full Step Down | D2 | G2 | C3 | F3 | A3 | D4 |
About Guitar Tuner
The Guitar Tuning Reference is a free, browser-based lookup tool that displays the precise target frequency (in Hz) for every string across 10 commonly used guitar tunings. For each tuning, it shows the note name and exact frequency for all six strings — from the 6th (Low E or D) to the 1st (High E or D). Standard tuning frequencies are E2 (82.41 Hz), A2 (110.00 Hz), D3 (146.83 Hz), G3 (196.00 Hz), B3 (246.94 Hz), and E4 (329.63 Hz). Alternate tunings like Drop D lower the 6th string to D2 (73.42 Hz), while DADGAD replaces the 3rd and 1st strings with A3 (220.00 Hz) and D4 (293.66 Hz).
Guitarists, music teachers, luthiers, and audio engineers use this reference when tuning by ear or with a chromatic tuner, when restringing after a setup, when learning alternate tunings for specific songs, or when comparing string pitches across different tuning configurations. The comparison table at the bottom shows all 10 tunings side by side, making it easy to spot exactly which strings differ between tunings and by how much.
The tool is implemented as a pure reference display — selecting a tuning from the dropdown updates the six string cards and highlights the corresponding row in the full comparison table. All tuning data is hardcoded in the component and rendered using React's useMemo hook. No microphone, audio input, or external API is required, and the page works offline once loaded.
Key Features
- 10 guitar tunings covered: Standard, Drop D, DADGAD, Open G, Open D, Open E, Open A, Drop C, Half Step Down, Full Step Down
- Exact Hz frequency displayed for each of the 6 strings in the selected tuning
- Note names shown per string (e.g., E2, A2, D3, G3, B3, E4 for Standard)
- String position labels: 6th (Low), 5th, 4th, 3rd, 2nd, 1st (High) for easy orientation
- Full comparison table listing all 10 tunings side by side with note names for all 6 strings
- Click any row in the comparison table to switch the selected tuning instantly
- Active tuning row highlighted in blue in the comparison table for quick visual reference
- Fully client-side reference — no microphone, no audio API, works offline after loading
Frequently Asked Questions
What is the Guitar Tuning Reference tool?
It is a free, browser-based reference that shows the exact target note name and frequency (Hz) for each string in 10 common guitar tunings. Select a tuning from the dropdown to see all 6 string frequencies, and use the comparison table to view all 10 tunings side by side. No microphone or audio input is needed — this is a static reference, not an active tuner.
What are the 10 tunings included?
Standard (EADGBe), Drop D (DADGBe), DADGAD, Open G (DGDGBd), Open D (DADf#AD), Open E (EBEg#BE), Open A (EAEAc#E), Drop C (CGCFAd), Half Step Down (Eb Ab Db Gb Bb Eb), and Full Step Down (DGCFAd). Each is listed with its exact string frequencies in Hz.
What are the standard tuning frequencies for each string?
Standard tuning (EADGBe) frequencies: 6th string E2 = 82.41 Hz, 5th string A2 = 110.00 Hz, 4th string D3 = 146.83 Hz, 3rd string G3 = 196.00 Hz, 2nd string B3 = 246.94 Hz, 1st string E4 = 329.63 Hz. These are based on the A4 = 440 Hz concert pitch standard.
What is Drop D tuning and when is it used?
Drop D tuning lowers only the 6th string from E2 (82.41 Hz) to D2 (73.42 Hz), leaving all other strings the same as Standard. It is widely used in rock, metal, and folk music because it allows power chords to be played with a single finger across the bottom three strings, and it gives the guitar a lower, heavier sound on the lowest string.
What is DADGAD tuning?
DADGAD replaces the 3rd string from G3 to A3 (220.00 Hz) and the 1st string from E4 to D4 (293.66 Hz), while also lowering the 6th string to D2 like Drop D. The resulting open chord has a suspended, modal quality. It is popular in Celtic folk music, fingerstyle guitar, and acoustic genres, and was famously popularized by guitarist Davy Graham.
What is the difference between Open G, Open D, and Open E tunings?
Open G (DGDGBd) produces a G major chord when all strings are strummed open. Open D (DADf#AD) produces a D major chord open. Open E (EBEg#BE) produces an E major chord open. All three are common slide guitar tunings because playing a barre across all strings at any fret produces a major chord, making it easy to play melodies and chord progressions with a slide.
How does Half Step Down differ from Full Step Down?
Half Step Down lowers every string by one semitone from Standard: Eb2, Ab2, Db3, Gb3, Bb3, Eb4. Full Step Down lowers every string by a whole tone (two semitones): D2, G2, C3, F3, A3, D4. Both tunings preserve Standard fingering patterns, making them easy transitions. Half Step Down is common in hard rock (Jimi Hendrix, Guns N'Roses), and Full Step Down is used in heavier genres.
Can I use this tool to actively tune my guitar?
This tool is a static reference that displays target note names and frequencies — it does not listen through your microphone or detect pitch in real time. To actively tune your guitar, you will need a chromatic tuner app, a physical clip-on tuner, or a microphone-based pitch detection tool. Use this reference to know what target frequency each string should match.