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Online Pitch Detector

See your pitch in real time

Sing into the mic and watch your pitch drawn live on screen — you instantly see whether you're on note.

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What does an online pitch detector do?

It turns your sung voice into a live pitch curve and cents deviation, so you can see whether you are sharp, flat, or falling at the end. Use it for intonation checks, pitch practice, and sustained-note stability.

Use cases

What this tool is good for

The hardest part of practice is not hearing your own off-pitch moments. HengHeng turns your voice into a visible curve with cent-level deviation, so your ear's blind spot becomes visual feedback.

  • Tell whether you are generally sharp, generally flat, or only falling at the end.
  • Watch whether a sustained note stays around the target instead of judging one instant number.
  • Turn “I feel off” into trainable parts: attack, sustain, ending, and wobble.
  • Pair with Piano to build a listen-sing-check loop.
How to use it

A 3-minute first drill

Start in a comfortable middle-low range and sing lightly; read the trend instead of forcing every instant to zero.

  1. 1

    Open Piano and play a comfortable reference note; do not start with your highest note.

  2. 2

    Open Pitch Monitor, allow microphone access, and keep the room as quiet as practical.

  3. 3

    Sing “la” or “woo” lightly for 3 to 5 seconds and watch whether the curve stays near the target.

  4. 4

    Repeat five times and note the most stable and least stable take.

  5. 5

    If every take leans the same way, fix that one direction before changing songs.

Reading the feedback

How to read what you see

Note name

The nearest equal-tempered note name. Use it for orientation, not as the whole judgment of a moving voice.

Hz

The current fundamental frequency. You do not need to memorize it, but it explains why a note sounds higher or lower.

Cents

Cent deviation describes distance from the target; in 12-tone equal temperament, 100 cents equals one semitone.

Curve trend

A stable sustained note usually waves gently around the target. If the ending slides down, check breath and phrase support first.

Common mistakes

Common mistakes and fixes

Too much background sound

Accompaniment, speaker playback, and room noise can disturb detection. Use headphones or a quieter room for the first check.

Chasing one instant

Pitch naturally moves. The full curve is more useful than forcing one frame to look perfect.

Squeezing to hit zero

Closer numbers do not automatically mean healthy technique. If you tighten up, lower volume and pitch first.

Wrong range

Too high or too low can measure range strain rather than your basic pitch skill.

Who it's for
  • Anyone calibrating pitch
  • karaoke fans
  • beginners
Practice combinations

Pair it with these tools

Piano Set a reference tone first, then see where your voice lands. Pitch Bird Turn curve feedback into repeated pitch-control drills. Breath Racer If endings fall, check sustained-note steadiness with breath feedback.
Related guides

Start from common questions

Pitch How to sing in tune Singing out of tune is usually not a broken voice. It is a missing loop between reference pitch, listening, and vocal control. Use a piano target, verify with pitch tracking, then build stability through ear training and games. Pitch Monitor · Piano · Echo · Ear Training · Pitch Bird Warm-up 10-minute warm-up A warm-up is not about singing louder. It is a gradual setup for breath, vocal-fold coordination, resonance, and pitch accuracy, starting light, short, and low-risk. Piano · Pitch Monitor · Breath Racer · Resonance Radar Breath Breath support Breath issues often show up as running out of air, falling endings, wobble, or a squeezed tone. Start by stabilizing short sustained notes before extending phrases. Breath Racer · Pitch Monitor · Resonance Radar
When to stop

When you should not keep practicing

Stop if you feel throat pain, hoarseness, clear fatigue, or increasing tension while trying to make the number look better. Pitch Monitor observes pitch trends; it does not diagnose vocal-fold health or replace a clinician or coach.

FAQ

Questions before you practice

Can an online pitch detector tell if I sing out of tune?

It can show sharpness, flatness, and stability, but it works best with a reference note. Without a target, it mainly tells where you are singing.

How many cents count as out of tune?

There is no universal line. Sustained or repeated deviation in one direction matters more than one instant. 100 cents equals one semitone for scale.

Why is my pitch curve shaky?

It may come from volume, breath, vowel choice, range strain, or noise. Lower the volume, use a comfortable range, and try a soft 3-second note.

Does a phone microphone affect results?

Yes, especially with noise or speaker playback. For practice, relative change on the same device matters more than lab-grade precision.

Can I use it for high-note practice?

You can observe high-note pitch, but do not use it to force high notes. Approach range gradually and stop with pain or hoarseness.

References

Sources and further reading