Free · in your phone's browser · nothing uploaded
Harmonica tuner
A free harmonica tuner in your phone's browser: blow holes 1 to 4 of a diatonic in C, G, A or D and see each reed in cents, at A = 442 Hz as most harps are made. Nothing uploaded.
A harmonica starts at 442 here. Mika knows a new one reads sharp at 440 and doesn't panic.The microphone closes when you stop, when all is in tune, or after half a minute of quiet. Nothing is recorded.
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The notes in Hz
C harmonica
| Note | Hz |
|---|---|
| C4 | 262.81 |
| E4 | 331.13 |
| G4 | 393.78 |
| C5 | 525.63 |
The other versions
| Tuning | Notes | Hz |
|---|---|---|
| G harmonica | G3 B3 D4 G4 | 196.9 · 248.1 · 295.0 · 393.8 |
| A harmonica | A3 C♯4 E4 A4 | 221.0 · 278.4 · 331.1 · 442.0 |
| D harmonica | D4 F♯4 A4 D5 | 295.0 · 371.7 · 442.0 · 590.0 |
At A4 = 442 Hz; the reference switch above moves them all.
How to tune
A diatonic harmonica is named for its 1-blow note: on a C harp, blow holes 1 to 4 give C E G C. Pick the key stamped on the cover plate and blow each hole long and soft; a hard breath bends a reed flat and the needle follows it.
Most harmonicas leave the factory a little sharp of 440, around 442 Hz, so the page starts there; at 440 a new harp reads a few cents high and nothing is wrong. Players don't retune by turning anything: a reed is filed at its tip to go up or scraped near the rivet to go down, a job for a steady hand or a repairer.
Then play something
The notes you tuned can go into Brumm as a short melody over a beat. Hum a line on top and it becomes an instrument.
The microphone is read in the browser and nothing is kept. How the site counts visits.