Free Online Pitch Detector with Instant Results
Sing, play, or upload audio to see your pitch, note, and frequency instantly. Use your microphone or audio files to detect pitch accurately in real time.
Real-Time Pitch Detector
Professional-grade pitch detection for musicians, vocalists, and audio enthusiasts
Standard Tuning Frequency Chart
Scientific frequency guide (A4 = 440 Hz) for common instruments. Use our Instrument Tuner to match these exact Hertz values.
Guitar (Standard E)
| String | Note | Frequency |
|---|---|---|
| 1 (High) | E4 | 329.63 Hz |
| 2 | B3 | 246.94 Hz |
| 3 | G3 | 196.00 Hz |
| 4 | D3 | 146.83 Hz |
| 5 | A2 | 110.00 Hz |
| 6 (Low) | E2 | 82.41 Hz |
Ukulele (Standard)
| String | Note | Frequency |
|---|---|---|
| 1 (A) | A4 | 440.00 Hz |
| 2 (E) | E4 | 329.63 Hz |
| 3 (C) | C4 | 261.63 Hz |
| 4 (G) | G4 | 392.00 Hz |
Violin
| String | Note | Frequency |
|---|---|---|
| 1 (E) | E5 | 659.25 Hz |
| 2 (A) | A4 | 440.00 Hz |
| 3 (D) | D4 | 293.66 Hz |
| 4 (G) | G3 | 196.00 Hz |
Bass Guitar (4-String)
| String | Note | Frequency |
|---|---|---|
| 1 (G) | G2 | 98.00 Hz |
| 2 (D) | D2 | 73.42 Hz |
| 3 (A) | A1 | 55.00 Hz |
| 4 (E) | E1 | 41.20 Hz |
Cello
| String | Note | Frequency |
|---|---|---|
| 1 (A) | A3 | 220.00 Hz |
| 2 (D) | D3 | 146.83 Hz |
| 3 (G) | G2 | 98.00 Hz |
| 4 (C) | C2 | 65.41 Hz |
Reference Tones
| Name | Note | Frequency |
|---|---|---|
| High C | C6 | 1046.50 Hz |
| Concert A | A4 | 440.00 Hz |
| Middle C | C4 | 261.63 Hz |
| Tenor C | C3 | 130.81 Hz |
| Low A | A2 | 110.00 Hz |
| Low E | E2 | 82.41 Hz |
How Our Pitch Detector Works
Professional frequency analysis in just three simple steps. Our advanced algorithm delivers studio-grade accuracy for musicians and vocalists.
Allow Microphone Access
Click “Start” and grant browser permission. We process audio locally on your device, ensuring 100% privacy with zero server uploads.
Sing or Play Audio
Sing a note, play your instrument, or upload an audio file. Our autocorrelation algorithm analyzes vibration frequencies in real-time.
Get Instant Results
See your exact pitch class, Hz frequency, and cent deviation. Use the visual tuner to correct your intonation instantly.
Online Pitch Detector Toolkit
Professional-grade audio analysis tools designed to detect pitch, identify notes, and analyze frequency in real-time. Everything you need for precise pitch detection.
Core Pitch Detection Tools
Voice Pitch Detector
Advanced real-time vocal analysis. Use this pitch detector to find your exact note and stability while singing.
Start Pitch Detector →Instrument Pitch Tuner
Detect pitch for Guitar, Ukulele, Violin, and Piano. Highly accurate frequency detection for precise tuning.
Tune Instrument →Audio File Pitch Detector
Upload MP3/WAV files to detect pitch in recorded audio. Extract musical notes from any song file instantly.
Analyze Audio File →Singing Note Detector
Identify the specific musical notes you are singing. A real-time pitch detector for learning melody and sight-singing.
Detect Notes →Vocal Range Pitch Test
Use pitch detection to find your lowest and highest notes and determine your voice type (Bass to Soprano).
Test Vocal Range →Real-Time Pitch Tracker
Visual graph tracking your pitch contour over time. Excellent for analyzing vibrato and pitch drift.
Track Pitch Live →Pitch Converters
Frequency to Note
Convert any Hertz (Hz) value to its corresponding musical note and cents deviation.
Convert Hz →Note to Frequency
Find the exact pitch frequency for any musical note (e.g., A4 = 440Hz).
Convert Note →Song Key Finder
Identify the musical key and BPM of any song using advanced pitch analysis.
Find Key →Pitch Training & Utilities
Pitch Accuracy Checker
Test how well you can match a reference pitch. Receive a score based on your intonation accuracy.
Check Accuracy →Note Finder
Hear a note? Sing it into our pitch detector to instantly identify what note it is on the musical scale.
Find Note →Online Metronome
Simple, accurate metronome for practicing timing and rhythm. Adjustable BPM and time signatures.
Open Metronome →Pitch Shifter
Change the pitch of an audio file without affecting its tempo. Great for practicing songs in different keys.
Shift Pitch →Vocal Analyzer
Comprehensive analysis of your voice qualities, including timbre, range, and stability metrics.
Analyze Voice →Professional Pitch Detector Applications
From music education to professional recording studios, our pitch analysis tools serve musicians, educators, and audio engineers across every aspect of music creation.
Music Education
Perfect for music teachers and vocal coaches. Use our pitch detector to visually demonstrate intonation and track student progress over time.
- ✓ Vocal Training: Real-time pitch feedback for singers.
- ✓ Instrument Lessons: Teach proper tuning and ear training.
- ✓ Music Theory: Visualizing frequency intervals and scales.
Studio Production
Essential for audio engineers and producers. Analyze recorded tracks for pitch accuracy and determine song keys instantly.
- ✓ Key Detection: Find the key of any sample or track.
- ✓ Pitch Correction: Analyze vocals before tuning plugins.
- ✓ Sample Analysis: Check tuning of instrument samples.
Live Performance
Reliable tools for live musicians. Tune instruments on stage or check vocal pitch stability during rehearsals.
- ✓ Quick Tuning: Fast, accurate instrument tuning.
- ✓ Warm-ups: Check vocal pitch before going on stage.
- ✓ Setlist Prep: Determine comfortable keys for songs.
Schools & Universities
Used in 200+ music programs worldwide.
Film & Media
Perfect for dialogue pitch analysis.
Speech Therapy
Monitor speaking pitch for rehab.
App Developers
Reference standard for algorithms.
Ready to Analyze Your Audio?
Join over 50,000 musicians and professionals using our advanced pitch detection tools today. No downloads required.
Start Free Analysis →Frequently Asked Questions
Everything you need to know about our pitch detector, accuracy, instruments, and troubleshooting.
Our tool uses the Web Audio API to capture sound directly from your microphone. It processes the audio signal using an advanced autocorrelation algorithm to calculate the fundamental frequency (Hz) and matches it to the nearest musical note. Read our full methodology.
Yes. Our algorithm detects pitch with an accuracy of ±1 cent (1/100th of a semitone). This level of precision is suitable for professional instrument tuning, vocal coaching, and studio work. See our accuracy reports.
No. Your privacy is our priority. All pitch detection happens locally within your web browser. No audio data is ever streamed, uploaded, or stored on our servers. Review our privacy policy.
This is usually due to browser permissions. When you click “Start,” you must click “Allow” on the browser popup. Check your browser’s site settings or try our microphone tester to diagnose issues.
Yes. The tool is chromatic, meaning it detects all 12 musical notes across the entire frequency spectrum (A0 to C8). For specific instrument presets, try our dedicated Instrument Tuner.
Hz (Hertz) is the physical vibration speed (e.g., A4 = 440 Hz). Cents measure tuning accuracy: 0 is perfect, +10 is sharp, -10 is flat. Visit our audio glossary for more terms.
Yes! Our pitch detector is fully responsive and works on iOS (Safari) and Android (Chrome) devices. No app download is required—just open the website and sing.
Currently, our tool is a monophonic pitch detector, designed to identify one single clear note at a time (like a voice or solo guitar melody). Playing chords may result in fluctuating readings.
The standard reference is A4 = 440Hz. However, our Instrument Tuner allows you to adjust the Concert A reference to 432Hz, 442Hz, or other custom frequencies.
Yes, PitchDetector.com is 100% free to use for unlimited time. There are no hidden paywalls, subscriptions, or login requirements for our core tools.
Yes. Use our Audio File Pitch Detector to upload MP3, WAV, or OGG files. It will analyze the recording and provide a pitch breakdown.
To determine if you are a Bass, Tenor, Alto, or Soprano, use our specialized Vocal Range Test. It will guide you through singing your lowest and highest notes.
Pitch detection requires a clear signal. Background noise, low volume, or complex timbres can cause “jitter.” Try moving closer to the microphone and eliminating background noise for a stable reading.
Yes. Our Real-Time Pitch Tracker visualizes your pitch contour on a graph, which is perfect for analyzing vibrato and pitch drift over time.
We recommend Google Chrome, Edge, or Safari for the best performance. These browsers have the most robust Web Audio API support for low-latency pitch detection.
Have more questions?
View More FAQAudio Knowledge Hub
Deepen your understanding of pitch perception, frequency physics, and audio analysis. Explore our expert guides, technical documentation, and accuracy studies.
Real-Time Browser Pitch Detection Explained
Understand the science behind how your browser captures audio and calculates frequency instantly without external software.
Read Explanation →How to Improve Vocal Pitch Accuracy
Learn specific exercises using online tools to train your ear, stabilize your vibrato, and hit notes with professional precision.
Start Training →How Microphone Quality Affects Accuracy
Does your mic matter? We analyze how different microphones impact pitch detection precision and how to get the best results.
Check Mic Guide →Trusted by 50,000+ Music Professionals
From Grammy-winning producers using our advanced frequency analysis to music educators teaching with our pitch detection software, professionals rely on our tools for accurate audio analysis every day.
What Professionals Are Saying
This voice pitch analyzer has completely transformed our vocal training program. Students can see their pitch accuracy in real-time, accelerating learning by at least 40%.
The precision is remarkable—matching our expensive hardware analyzers. It’s saved us countless hours in post-production workflows using the file pitch detector.
Essential for our touring setup. Quick instrument tuning with the chromatic tuner between songs and reliable pitch monitoring throughout our performances.
Success Stories from Leading Institutions
“Implemented across 12 vocal training programs, resulting in measurable improvements in student pitch accuracy using the vocal analyzer.”
📈 35% Improvement in Accuracy“Integrated into our recording workflow for real-time monitoring via the pitch tracker, reducing post-production time significantly.”
⚡ 40% Faster SessionsJoin 50,000+ Music Professionals
Experience the professional-grade accuracy trusted by the best in the industry.