All twelve note names
The tuner recognizes every semitone from C through B and follows the correct octave across your instrument's range.
Any note · any instrument
Free Online Chromatic Tuner
Play one sustained note and see its nearest chromatic pitch, octave, frequency, and cents deviation in real time.
Chromatic tuning
Tune any note with live cents feedback
Use your microphone with guitar, bass, strings, winds, keys, or voice. The tuner follows all twelve notes of the chromatic scale.
Current note
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Frequency
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Deviation
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Reference pitch
440 Hz
No stable note detected yet. Sing or play a sustained single note close to your microphone.
Calibration
Use A4 = 440 Hz for standard concert pitch, or match the reference used by your ensemble.
Best results
- Use a quiet room and stay close to the microphone.
- Play or sing one sustained note at a time.
- Avoid heavy background chords or reverb while detecting pitch.
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Pitch history
See whether the note settles sharp or flat
The piano roll shows the recent note lane and pitch drift, which helps you separate a steady tuning error from vibrato or attack movement.
Pitch piano roll
A note-lane view of the last 15 seconds, with stable notes as blocks and live pitch drift as a trace.
Auto-follow range
How it reads pitch
A true chromatic target for every semitone
Unlike an instrument preset, a chromatic tuner does not limit detection to a fixed set of open strings.
Cents from center
A negative cents value is flat, a positive value is sharp, and zero is centered on the selected reference pitch.
Adjustable concert pitch
Set A4 from 432 to 446 Hz when you need to match an ensemble, historical reference, or existing recording.
Quick start
How to use the chromatic tuner
A clean, sustained single note gives the fastest and most reliable reading.
- 1
Choose the A4 reference required by your music; leave it at 440 Hz for standard concert pitch.
- 2
Start listening and play one note close to the microphone.
- 3
Confirm the note name and octave, then adjust until the cents value approaches zero.
- 4
Let the note ring and recheck it after the initial attack settles.
Chromatic tuner FAQ
Answers before you start tuning
Use the chromatic page when you need open-ended note targets rather than one instrument preset.
What instruments work with a chromatic tuner?
Any instrument or voice that can produce a sustained single pitch can work, including guitar, bass, ukulele, violin, viola, cello, winds, brass, and keys.
What does the cents number mean?
A cent is one hundredth of a semitone. Negative values mean the note is flat, positive values mean it is sharp, and 0 cents is in tune.
Why are flats displayed as sharps?
The tuner uses sharp names for the five black-key pitches. These are enharmonic equivalents, so C# is the same sounding pitch as Db, for example.
Choose the right target
More ways to check pitch
Switch to a fixed 432 Hz reference, inspect pitch history in detail, or tune standard guitar strings.