SingMeter

🎵 Pitch Detector

See your pitch in real-time as you sing or play. Perfect for vocal training and pitch accuracy practice.

🎤 Singing Practice Path

Use this page as the feedback step in a short loop: hear a reference on the Tone Generator, sing here, then lock rhythm on the Metronome. If you are preparing a cover, pair with the Song Key Finder after the Vocal Range Test so you practice in a key that fits your voice.

10-Minute Session: Reference → Sing → Steady Time

  1. 1On the Tone Generator, play a comfortable note (often C4 or a note from your Vocal Range Test) at low volume with a sine wave. Listen for two seconds.
  2. 2Return here, start the microphone, and sing the same pitch on a steady “Ah” for 3–5 seconds. Aim for the green zone (within about ±10 cents).
  3. 3Repeat with a second note a major third or fifth above—play the reference, then sing without scooping.
  4. 4Finish with the Online Metronome at 72–80 BPM: sing a five-note scale or one phrase of your song, one syllable per beat.

Three routines you can repeat daily

Routine 1· 3 minutes

Calibration Match

Tool settings: Tone Generator · sine · 30–40% volume

Play Middle C (C4) or your chosen root. Stop the tone, then sing and hold. If you are flat, add breath support; if sharp, relax the jaw and tongue.

Goal: Hold the needle in the green zone for 3 seconds on one note.

Routine 2· 5 minutes

Stability Hold

Pick a comfortable note in your range. Sing straight tone (no vibrato) for 5 seconds per attempt. Rest 10 seconds between tries.

Goal: Keep deviation within ±10 cents without wavering.

Routine 3· 7 minutes

Scale + Tempo

Tool settings: Metronome 72 BPM · optional Tone on first note only

Sing Do–Re–Mi–Fa–Sol up and down on “La.” Use the generator only on Do and Sol to check endpoints; inner notes are from memory.

Goal: Land each scale step in the center—not sliding up into pitch.

Go deeper: Ear Training for Singers — build pitch memory step by step

What the cents readout really tells you (and what it doesn't)

The notes below come from how we use and test SingMeter tools in real practice sessions.

How we test this tool

We use this detector the way singers do—into a laptop or phone mic, in a normal room—and tune its readings against a reference tone. The point is honest feedback on your sustained pitch, not chasing a perfect zero that fights your natural vibrato.

  • Reference check: we sing notes matched to the Tone Generator (A4 = 440 Hz) and expect the detector to agree within a few cents on a steady, sustained tone.
  • Vibrato vs. drift: a trained vibrato naturally swings ±10–15 cents around the center. We read the average position, not every momentary number—a wobble that always sits low means flat, not vibrato.
  • Room and mic noise: fans, echo, and low-quality mics make the readout jumpy. We quiet the room first; a noisy signal reads as false sharp/flat spikes.
  • Latency: there is a small delay between singing and display. We hold each note 2–3 seconds so the reading settles before judging it.
Practice case10 min · quiet room · headphones

Finding a hidden flat habit on long notes

  1. 1A user sang G3 and the readout sat near 0 for a second, then slowly drifted to −20 cents as the note continued.
  2. 2That pattern—fine at onset, flat over time—pointed to fading breath support, not a tin ear.
  3. 3Fix: take a low breath, keep the ribs expanded, and add a touch of brightness as the note continues. On the next try the cents held within ±8 for the full 5 seconds.
  4. 4We repeated on three notes and logged the tendency, then moved to a song phrase that ends on a long held note to apply it.

Common misconceptions

“In tune means exactly 0 cents the whole time.”
Expressive singing moves slightly around the center. Aiming for a robotic 0 creates tension. We target a stable average within about ±10 cents.
“The detector is wrong because the number jumps around.”
Most jumpiness is room noise, a breathy onset, or vibrato. Quiet the space, hold the note, and read the settled average before blaming the tool.
“If I’m flat, I just need to sing louder.”
Volume is not pitch. Flatness on held notes is usually weak breath support or fatigue. We fix support and listening first—see the flat-singing guide below.

Go deeper on SingMeter

📖 How to Use This Tool

1

Start the Detector

Click the microphone button to allow access. We process audio directly in your browser, so your voice is never recorded or sent to a server.

2

Sing a Steady Note

Hold a comfortable note for a few seconds. Watch the needle move to see your pitch stability.

3

Check Your Tuning

  • Green (Center): In tune (±10 cents).
  • Right: Sharp (too high). Relax throat.
  • Left: Flat (too low). Support breath.
4

Practice Scales

Once you can hold a single note, try singing a simple scale (Do-Re-Mi) and see if you can hit each step accurately.

🎯 Understanding Your Results

Note Name (e.g., C4, A3)

This shows the musical note you're singing. The letter (C, D, E, F, G, A, B) represents the pitch class, and the number represents the octave.

Example: C4 is "Middle C" on a piano, the most common reference note. A4 (440 Hz) is the standard tuning pitch used by orchestras worldwide.

Frequency (Hz - Hertz)

This is the number of sound wave vibrations per second. Higher numbers = higher pitch.

Common frequencies:

  • Male voices: typically 85-180 Hz (low notes) to 330-660 Hz (high notes)
  • Female voices: typically 165-255 Hz (low notes) to 660-1,100 Hz (high notes)
  • Middle C (C4): 261.63 Hz
  • Concert A (A4): 440 Hz

Cents (Pitch Accuracy)

A "cent" is a unit of musical pitch. There are 100 cents between any two adjacent notes. The indicator shows how close you are to the target note.

In Tune (±10 cents)

Excellent! Your pitch is accurate enough for most musical contexts.

Flat (negative cents)

Your pitch is slightly lower than the target note. Try singing a bit higher.

Sharp (positive cents)

Your pitch is slightly higher than the target note. Try singing a bit lower.

Frequently Asked Questions

Our pitch detector uses the Web Audio API to analyze sound waves from your microphone. It calculates the fundamental frequency of your voice in real-time and maps it to the nearest musical note.

The human voice naturally has small variations (vibrato) and imperfections. If the fluctuations are large, try singing a steady, straight tone and ensure you are in a quiet environment to reduce background noise.

A cent is a unit of measure for pitch. There are 100 cents in a semitone (the distance between two adjacent keys on a piano). Being within ±10 cents is generally considered 'in tune' for most singing contexts.

No, most built-in laptop or phone microphones work perfectly fine. However, using a headset or external microphone can improve accuracy by reducing background noise and echo.

No. All pitch analysis happens locally in your browser. Your audio data is never sent to our servers or stored anywhere.

Go Deeper on Pitch Training

This page is your real-time feedback tool—watch cents while you sing. Structured exercises, daily routines, and problem-specific fixes live in our guides so we don't repeat them here.

Start with the 10-minute pitch calibration tutorial if you want a timed first session on SingMeter.

About This Pitch Detector

SingMeter's Pitch Detector is a real-time vocal analysis tool designed to help singers train their ear and improve their pitch accuracy. By visualizing the exact frequency of your voice, you can see instantly whether you are singing in tune, sharp (too high), or flat (too low).

Unlike a simple guitar tuner, this tool is optimized for the human voice. It detects the fundamental frequency of your singing and maps it to the closest musical note, showing you the deviation in "cents."

Understanding Pitch & Cents

In music, the distance between two semitones (like C and C#) is divided into 100 smaller units called cents.

  • 0 cents: Perfect pitch accuracy.
  • ±10 cents: Generally considered "in tune" to the human ear.
  • ±25 cents: Noticeably out of tune for trained listeners.
  • ±50 cents: You are halfway to the next note (quarter tone).

Most professional singers naturally fluctuate within ±10-15 cents due to vibrato and expression. The goal isn't to be robotic, but to center your pitch so it feels stable.

Structured Pitch Practice

Siren slides, long tones, interval jumps, and scale work are best followed step-by-step—not repeated here. Use the timed tutorial for a first session on SingMeter, or the pitch hub for problem-specific fixes (flat vs sharp, ear training, daily loop).

Limitations & Disclaimer

While this tool is highly accurate, it relies on your device's microphone. Background noise, poor microphone quality, or echo can affect results. Also, remember that this is an educational tool, not a medical device. If you feel pain or strain while singing, stop immediately and consult a professional.