Practice tool
Free Online Tuner
Chromatic tuner for guitar, violin, ukulele and more. Detects pitch from your mic — or play a reference tone to tune by ear.
Detected note
—
— Hz
−50¢−25¢0+25¢+50¢
Waiting for mic…
Your browser will ask for microphone permission. Audio stays on your device — nothing is sent anywhere.
Reference tones
Play a note to tune by ear
Vol
How to use
- • Click Start Tuner and allow mic access
- • Play a single note on your instrument
- • Watch the needle — centre = in tune
- • Red = flat or sharp, green = in tune
- • Use reference tones to tune by ear
Standard tuning
- Guitar: E A D G B E
- Violin: G D A E
- Ukulele: G C E A
- Bass: E A D G
- Cello: C G D A
Want to hear these notes in context?