Online Tone Generator — generate sine, square, triangle, and sawtooth waveforms from 20Hz to 20kHz. Free, browser-based, Web Audio API powered.
🎵 Tone Generator
Generate pure tones, test specific frequencies, and check stereo balance with a precision tone generator.
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🎯 Common Reference Frequencies
💡 What Can You Use a Tone Generator For?
Speaker & Headphone Testing
Sweep through frequencies to find weak spots, rattles, or resonance issues. Identify exactly which frequencies cause distortion in your audio equipment.
Hearing Tests & Tinnitus Masking
Play specific frequencies to check your hearing range. Match your tinnitus frequency for temporary relief through sound masking.
Instrument Tuning & Ear Training
Generate reference tones to tune guitars, pianos, and other instruments. Train your ear to recognize intervals and pitch.
Science & Education
Demonstrate wave properties, resonance, beat frequencies, and acoustic principles in classrooms or research labs.
Audio Equipment Calibration
Produce precise reference tones for calibrating mixers, amplifiers, and recording equipment. Standard 1 kHz tone for level matching.
Sound Therapy & Meditation
Work with Solfeggio frequencies (174Hz, 285Hz, 396Hz, 417Hz, 528Hz, 639Hz, 741Hz, 852Hz, 963Hz) for relaxation, focus, or sleep.