freeaudio.tools
Tone Generator
Generate any tone from 20 Hz to 20,000 Hz, free. Download it as MP3 or WAV.
Your browser. Nothing uploaded.
Start low. High volume tones can hurt your ears and speakers.
Questions
Is this tone generator free?
Yes, 100% free. No sign up, no watermark and no limits.
Does anything get uploaded?
Nothing gets uploaded. The tone is made on your own device, right in your browser.
How do I generate a tone?
Type a frequency or drag the slider, pick a wave, and press Play. Use the presets for common tones like 440 Hz, 432 Hz and 1 kHz.
What frequencies can it make?
Anything from 20 Hz to 20,000 Hz, in steps as small as 0.1 Hz.
What are the wave types?
Sine is a pure, smooth tone. Square sounds hollow and buzzy, sawtooth is bright and harsh, and triangle sits in between.
Can I download the tone?
Yes. Pick a length (5 seconds to 10 minutes) and click Export MP3 or Export WAV.
What can I use a tone generator for?
Tuning instruments, testing speakers and headphones, finding your hearing range, sound experiments, and 432 Hz or 528 Hz listening.
Why can't I hear very high or low tones?
Most adults can't hear above about 15 to 17 kHz, and small speakers can't play very low tones. Try headphones.
Is it safe?
Keep the volume low, especially with headphones and high frequencies. Loud tones can damage your hearing and speakers.
Does it work on my phone?
Yes. It works on iPhone and Android. Turn off silent mode if you hear nothing.
Learn more about the tone generator
Generate any tone online, free
This free online tone generator plays any frequency from 20 Hz to 20 kHz right in your browser. Pick a wave shape, set the volume and download the tone as an MP3 or WAV.
How to generate a tone
- Type a frequency in Hz or drag the slider.
- Pick Sine, Square, Sawtooth or Triangle.
- Press Play and set the Volume.
- To download, pick a length and click Export MP3 or Export WAV.
Test tones for speakers, headphones and hearing
Sweep from low to high to find where your speakers start and stop, check headphones for rattles, or test your own hearing range. The 17.4 kHz "mosquito" tone is one most adults can't hear.
Tuning tones: 440 Hz, 432 Hz and 528 Hz
440 Hz is the standard A used to tune instruments. 432 Hz and 528 Hz tones are popular for meditation and relaxing.
We hope you enjoy using our free tone generator! Consider donating to keep the site running here: Donate