Free audio tools in your browser

Check your speakers, headphones and microphone, or play a test tone. Each tool runs on its page: no download, no account, and nothing is uploaded.

Sound testCheck left and right speakers or headphones, run a 20 Hz to 20 kHz sweep and a phase check.
Mic testSee your microphone on a live level meter, pick the input, record five seconds and play it back.
Tone generatorPlay a steady tone at any frequency from 20 Hz to 20 kHz as a sine, square, sawtooth or triangle wave.

The tools are made by SoundDial, a volume mixer for Mac that gives every app its own slider, mute and equalizer. Try the mixer with sound.

Download on the Mac App Store