Online Tone Generator
Generate precise audio tones and frequencies from 20Hz to 20kHz.
Precision Frequency Generator
This tool will use the Web Audio API OscillatorNode to generate precise audio tones. Control frequency, waveform type, and volume to produce any tone from deep bass to ultrasonic frequencies.
Features
- ✓ Frequency range from 20Hz to 20,000Hz
- ✓ Sine, square, sawtooth, and triangle waveforms
- ✓ Precise frequency input with slider and number entry
- ✓ Volume control with dB display
- ✓ Frequency sweep mode
- ✓ Musical note presets (A4 = 440Hz, etc.)
About the Online Tone Generator
Our free online tone generator uses the Web Audio API's OscillatorNode to produce precise audio frequencies directly in your browser. No software installation or plugins are needed -- just set your frequency and click play.
Choose from four waveform types: sine (pure tone), square (buzzy, digital sound), sawtooth (bright, harsh), and triangle (soft, rounded). Each waveform produces a different harmonic character at the same fundamental frequency.
This tool is useful for audio engineers testing speaker response, musicians tuning instruments, students learning about sound waves, and anyone who needs to generate a specific frequency for hearing tests, tinnitus masking, or equipment calibration.