Tone Generator
Create a steady test tone in your browser. You can adjust the frequency, choose a waveform, and use extra tools only when you need them.
Basic Tone
Start at a low volume before you play a test tone.
Fine Control Small Hz Steps · Copy Link
Core Presets
Tap to SetMore Tone Tools Notes · Presets · Harmonics
Note / Frequency
Full Frequency Presets
Harmonic Mix
Keep this at 0% for a pure tone. Raise it when you want the tone to feel less artificial.
Sweep Test Start · End · Duration
Sweep Generator
Use a low volume for sweeps. Be extra careful with subwoofer and high-frequency sweeps. You can stop the sound with the main play button.
Saved & Timer Save Hz · Auto Stop
Auto Stop Timer
Auto stop starts when you press play.
Saved Frequencies
Saved frequencies stay in this browser. They are not uploaded.
Safety & Tips Low volume first
Safe Test Tone Use
Start at a low volume. Raise the volume slowly. Keep high-frequency checks short. Stop if you hear rattling, distortion, or discomfort.
Free online test tone generator
This browser tool creates steady test tones for playback checks, tuning reference, frequency practice, and simple audio troubleshooting. Choose a frequency, choose a waveform, and start with a low volume.
Fine frequency control
The large slider is useful for quick movement across the frequency range. The small frequency buttons are useful when you need more accurate control on a phone or tablet.
Extra tools when you need them
You can use note references, frequency presets, sweeps, saved frequencies, and an auto stop timer. These tools stay below the main controls so the first screen remains simple.
What can I use a test tone generator for?
Use it for quick speaker checks, frequency reference, resonance checks, basic ear training, signal-path testing, and simple audio troubleshooting.
How should I start safely?
Start with a low volume before playing any tone. Be especially careful with very low and very high frequencies because they can be uncomfortable or hard to judge by ear.
Start at a low volume before you play a test tone.
Use a low volume. Loud test tones can damage your hearing or your audio system.
This is a low bass frequency. Raise the volume slowly because low bass can stress your audio system.
This is a high frequency. Keep the volume low and do not listen for a long time.
Very low sounds can show subwoofer movement and room rumble.
This range carries kick drum weight, bass guitar body, and low-end energy.
This range can show warmth, boxiness, and lower instrument body.
This range carries the core tone of vocals, guitars, and many instruments.
This range can show attack, clarity, pick noise, and speech detail.
This range can show brightness, hiss, cymbal detail, and edge.
This is the very high range. Use it carefully and keep the volume low.
Auto stop starts when you press play.
Auto stop is active.
No saved frequencies yet.
Feedback
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