How to Use the Musical Note Frequency Generator & Tuner
-
1
Select standard reference pitch (A4 = 440 Hz standard or A4 = 432 Hz alternate).
-
2
Pick any note across octaves 0 through 8 (e.g. Middle C = C4 = 261.63 Hz).
-
3
Choose quick instrument tuning presets (Standard Guitar EADGBE, Bass EADG, Violin GDAE, Ukulele GCEA).
-
4
Click Play to sound the continuous reference pitch with sine, triangle, or warm harmonic waveforms.
Practical Example & Use Case
Common Real-World Scenario
Tuning an acoustic guitar by playing the exact 82.41 Hz (E2), 110.00 Hz (A2), and 146.83 Hz (D3) reference sine tones.
Technical Notes & Limitations
Browser Engine Architecture
Calculates 12-tone equal temperament (12-TET) frequencies using the formula $f = 440 \times 2^{(n - 69)/12}$.
Frequently Asked Questions
What is A4 = 440 Hz?
It is the international standard concert pitch (ISO 16) established in 1955 for tuning musical instruments.