Get ready
Use a quiet room. Keep your phone or microphone nearby and avoid playing music through speakers.
YOUR VOICE · IN REAL TIME
See the note you sing.
Sing a steady note. Follow its name, frequency and pitch curve as you sing.
Ready when you are
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Sing one clear, steady note
- Frequency
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- From nearest note
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- Pitch clarity
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A4 = 440 Hz. Listen first, stop the tone, then match it. Use headphones to keep playback out of the microphone.
Recent pitch · last 8 seconds
The curve shows recent reliable notes. Gaps mean silence or an unclear pitch.
Sign in to use the pitch detector ↗
Free after sign-in. No credits needed. Microphone audio stays in this browser.
How to use the pitch detector
Listen, then match
Play a reference tone, stop it, and sing a comfortable “ah”. Hold the note gently for a few seconds.
Read the display
The large note is the closest musical note. Cents show how far above or below that note you are; 100 cents is one semitone.
Pitch detector questions
Does this record or upload my voice?
No. The microphone is processed locally. This tool does not record, upload or save your audio or pitch history.
Why does the note jump or disappear?
Noise, breathy sounds, vocal fry and more than one sound can confuse pitch detection. Try a clear, sustained note. Silence and low-confidence sounds are left blank.
Does “near the note” mean I sang a song correctly?
It only compares your sound with the nearest equal-tempered note, using A4 = 440 Hz. It does not know the intended melody, rhythm or expression.
Can I use it on my phone?
Yes, in supported browsers with microphone permission. Your device’s microphone and room noise affect the estimate.
Put the note into a song.
Choose an example, listen to the melody and practise one passage at a time.