Online Tone Generator

Free Online Frequency Sweep Generator - Test Audio Systems & Hearing Range

Our advanced frequency sweep generator creates precise tone sweeps between any two frequencies you specify. This powerful tool is essential for audio engineers, musicians, and audiophiles to test equipment response, identify resonant frequencies, or evaluate hearing range.

How to Use:
1. Enter your start and end frequencies in Hz
2. Set the sweep duration in seconds
3. Choose from four waveform types (sine, square, sawtooth, triangle)
4. Select linear or exponential sweep progression
5. Adjust volume settings if needed
6. Click Play to generate the frequency sweep

Key Features:
• Customizable sweep range from 1Hz to 22,000Hz
• Precise control over sweep duration (0.1s to 60s)
• Multiple waveform options for different testing needs
• Linear and exponential sweep modes
• Independent start/end volume controls
• Real-time frequency display during playback

Start frequency
(in Hz)

End frequency
(in Hz)

Duration
(in seconds)



Current Frequency: 1Hz
Current Time: 0s
Current Volume: 40%

Professional Applications:
• Audio system testing and calibration
• Room acoustics analysis
• Speaker break-in and testing
• Hearing range evaluation
• Musical instrument tuning analysis
• Science education and demonstrations

Safety Note: Always listen at moderate volumes. High frequencies at loud volumes can damage hearing or equipment. We recommend starting at low volume (below 50%) and increasing gradually if needed. This tool works best in Chrome, Safari, and Firefox browsers.