Pitch Checker

Getting Started

Tap Start Mic and allow microphone access. Sing or play a note — the detected pitch appears as a large note name with its frequency and octave. The cents meter shows how sharp (+) or flat (−) you are from the nearest note. Green means in tune (within ±5¢), yellow is close, red means adjust.

Pitch History

The scrolling graph plots your pitch over time against note gridlines. Use it to see if you're consistently hitting the right notes or drifting sharp/flat.

Notation System

Choose how note names are displayed. Western (C D E F G A B) is the default. Switch to Hindustani Sargam (Sa Re Ga Ma…), Carnatic, Japanese, Chinese Jianpu (numbered 1-7), or Korean depending on your musical tradition.

Tonic (Root Note)

Sets the starting note of your scale. Default is C. If you're practicing in D major, set tonic to D — the scale indicator and reference tone will adjust accordingly.

Scale System & Scale

Pick a scale category — Western modes (Major, Minor, Dorian…), Hindustani Thaats (Bilawal, Khamaj…), Carnatic Melakartas (all 72), or Japanese/Chinese/Korean scales. Then select the specific scale. Notes outside the selected scale will be visually flagged.

A4 Calibration

Standard tuning uses A4 = 440 Hz. Some orchestras tune to 442–443 Hz, baroque ensembles to 415 Hz. Adjust this slider if your instrument or ensemble uses a different reference pitch. Range: 420–460 Hz.

Sensitivity

Controls how loud the signal must be before pitch is detected. Default is 5. Raise it in noisy environments to ignore background sound. Lower it for quiet instruments or distant mics.

Reference Tone

Plays a steady tone at your selected tonic pitch. Use it to tune your instrument or to hear the target note before singing. Adjust volume with the slider.