Tap Start and allow microphone access. Play a single note on your instrument and hold it steady. The needle shows how sharp (+¢) or flat (−¢) you are from the nearest note. Tune until the needle is centered and the display turns green.
A chromatic tuner recognizes every note in the 12-tone equal temperament scale — not just the strings of one instrument. That makes it useful for any instrument: guitar, bass, violin, ukulele, wind instruments, piano, and more. Simply play a note and the tuner identifies it automatically.
The tuner shows three pieces of information at once: the detected frequency in Hz, the nearest note name (e.g. A4), and the deviation in cents (hundredths of a semitone). Zero cents means perfectly in tune. The waveform at the bottom shows the raw audio so you can see when a clean note is being detected.
| Note | Octave 3 | Octave 4 | Octave 5 |
|---|---|---|---|
| C | 130.81 Hz | 261.63 Hz | 523.25 Hz |
| D | 146.83 Hz | 293.66 Hz | 587.33 Hz |
| E | 164.81 Hz | 329.63 Hz | 659.25 Hz |
| F | 174.61 Hz | 349.23 Hz | 698.46 Hz |
| G | 196.00 Hz | 392.00 Hz | 783.99 Hz |
| A | 220.00 Hz | 440.00 Hz | 880.00 Hz |
| B | 246.94 Hz | 493.88 Hz | 987.77 Hz |
Play in a quiet environment — background noise can confuse pitch detection. Let each note ring out fully before reading the meter. On stringed instruments, tune up to pitch from below rather than down from above; this helps the string settle at the correct tension.
Looking for a tuner that highlights individual strings? Use the Guitar tuner (standard E A D G B E) or the Violin tuner (G D A E). For Northern Thai instruments, try the สะล้อกลาง tuner.