Practice guitar, right in your browser.
Tune up, keep time, transpose songs, and look up chords — six free tools that run entirely in your browser. No downloads, no sign-ups.
Pick a toolThe tools
Guitar Tuner
Tune your guitar with microphone detection or reference tones.
Metronome
Keep steady time with an adjustable click at any tempo.
Tap Tempo
Tap along to find the BPM of any song.
Chord Transposer
Paste a chord chart and shift every chord to a new key.
Chord Finder
Look up diagrams and fingerings for common guitar chords.
Fretboard Trainer
Quiz yourself on note names across the fretboard.
How to use OpenChord
- Open the tuner before you play and get every string in tune.
- Set a tempo on the metronome, or tap it out with Tap Tempo.
- Transpose a chord sheet into a key that fits your voice.
- Look up any chord shape instantly with the chord finder.
- Test your note knowledge with the fretboard trainer.
Why it works
- Free forever. No accounts, no paywalls, no trials.
- Runs anywhere. Any modern browser on phone or desktop.
- Fast and private. Everything is computed locally — nothing leaves your device.
Frequently asked questions
Is OpenChord really free?
Yes. Every tool is completely free to use, with no account required and no hidden fees.
Do I need to install anything?
No. OpenChord runs entirely in your browser. Just open a page and start using the tools.
Does the tuner work on my phone?
Yes. The tuner works on mobile browsers — you may need to allow microphone access, or you can use the reference-tone mode to tune by ear.
Which instruments are supported?
OpenChord is built for guitar: the tuner uses standard tuning (EADGBE) and the chord tools focus on guitar shapes.