About Pitch Tester Online

Pitch Tester Online is a collection of free browser-based tools for detecting musical pitch, identifying notes, monitoring voice pitch, measuring vocal range, and tuning a violin.

How the tools work

When you choose to start a tool, your browser requests microphone permission. Short audio buffers are analyzed locally to estimate the fundamental frequency and map it to a musical note. The site does not need an account or a third-party audio API.

Accuracy

Results depend on microphone quality, room noise, harmonics, and the stability of the sound source. These tools are intended for practice and everyday musical use rather than laboratory measurement.