Sing or play a note and see its name, its frequency and how far sharp or flat you are, in real time. Useful for singing practice and tuning.
–
Press Start and allow the microphone
Hold a steady note. The dot sits in the middle when you're in tune.
Allow microphone access when asked.
Hold a steady note.
The note name and frequency update live.
Center the dot: left is flat, right is sharp.
See whether you hit the note or drift.
Guitar, violin, ukulele, flute: any single note.
Sing a note, check it, adjust.
Nothing is recorded or uploaded.
The detector listens to short slices of sound from your microphone and looks for the repeating pattern in the waveform. The time between repeats gives the frequency, and the frequency gives the note: A4 is 440 Hz, and each semitone up multiplies it by about 1.06.
Cents measure how far you are from the nearest note: 100 cents make one semitone. Within about ±5 cents most listeners hear you as perfectly in tune.
It works best with one clear note at a time. Chords, loud background music or very breathy tones are harder to read. To find your full range, use the vocal range test.
Edit, convert and make music in your browser.
Sign up and get 3 free credits, enough for your first two songs. Check in on later days to collect more.
No credit card needed.