A voice tuner for one held note

Singing Tuner Online

Sing one steady vowel and see the nearest note, octave, frequency, and cents. This voice tuner online processes microphone audio locally.

Live voice noteNo upload
Reference tones
Waiting for voice

Start the microphone, then sing one steady note

— cents
FlatCenteredSharp

The microphone is off.

Tune the stable middle of the vowel

The first instant contains consonant noise and pitch approach. Hold a comfortable vowel, wait for the center to settle, and adjust the sustained portion instead of chasing the attack.

A singing tuner answers a different question from a pitch monitor

This page centers one held note against its nearest equal-tempered pitch. The pitch monitor records movement through a phrase; the vocal range test records session-wide limits.

Room calibration belongs before vocal judgment

Calibrate while silent when a fan or backing track wakes the meter. The local gate changes what counts as usable input; it does not “correct” the voice.

Questions

These answers focus on sustained singing and privacy.

Can I sing a melody into it?

It will show the current nearest note, but use the pitch monitor when the shape over time matters.

Why does vibrato move the cents value?

Vibrato intentionally moves above and below a center; judge the midpoint rather than freezing one edge.

Is my voice recorded?

No. Short microphone buffers are analyzed and discarded.

Sources behind the method

The tool combines published music-theory definitions with formulas exposed directly in its result.

Calculations and microphone analysis run locally in this browser.