Free · Mic in browser
Free guitar tuner online
Drop D, Drop C, bass, 7-string, ukulele, and more. Use your microphone - nothing to install.
- Alternate tunings
- Bass & ukulele
- A4 440 / 442 / 432
Ready
Standard
How to tune
Step 1
Allow the microphone
Press Start and approve mic access when the browser asks. Use headphones if you hear feedback.
Step 2
Pick a tuning
Choose standard, Drop D, Drop C, bass, ukulele, or another preset. Target notes update per string.
Step 3
Pluck one string
Mute the others and let one string ring. The needle and note settle when the pitch is clear.
Step 4
Tune until centered
Adjust the peg until the reading sits near zero cents. Then move to the next string.
Tuning presets
Notes listed low string to high. Load the matching preset in the tuner above.
| Tuning | Notes |
|---|---|
| Standard | E A D G B E |
| Drop D | D A D G B E |
| Half Step Down | D# G# C# F# A# D# |
| Drop C | C G C F A D |
| Drop B | B F# B E G# C# |
| DADGAD | D A D G A D |
| Open G | D G D G B D |
| Open D | D A D F# A D |
| 7-String Standard | B E A D G B E |
| Bass 4-String | E A D G |
| Ukulele | G C E A |
Guitar tuner FAQ
Is this online guitar tuner free?
Yes. It runs in the browser with no install and no account. Microphone access is only used while the tuner is listening.
What tunings are supported?
Presets include standard, Drop D, Drop C, Drop B, half step down, DADGAD, Open G, Open D, 7-string standard, 4/5/6-string bass, and ukulele. You can also set each string by hand and calibrate A4 to 440, 442, or 432 Hz.
Why does the note jump around?
Browser pitch detection works best with one clear string in a quiet room. Mute the other strings and avoid talking over the note.
Does this work on phones?
Yes on modern mobile browsers that allow microphone input. Hold the phone near the soundhole or amp, not right against a loud speaker.
Is this the same as AI tab conversion?
No. The tuner only listens for pitch so you can tune. To turn a recording into an editable tab, use the converter after you are in tune.
Related free tools
In tune? Capture the part
Record a clean take into the converter, or write frets in the free tab maker. AI conversion is Pro after you set up the source.