17 free audio tools

Cut, convert, record and transcribe audio in your browser. Private and free.

audio cutter trim the start and end off a song, voice memo or podcast clip
trim audio keep only the section of a recording you need
audio converter convert any audio file, or the sound of a video, to mp3, wav, m4a, ogg or flac
mp3 converter turn almost any audio or video file into an mp3 that plays on every device
wav to mp3 shrink big wav recordings into mp3 files, often 10 times smaller, with a choice of bitrate
volume booster make quiet recordings louder, or lower loud ones
voice recorder record audio from your microphone with pause and resume
speech to text press start and talk; your words appear as text
text to speech paste text and hear it read aloud
audio speed changer speed up or slow down audio
merge audio join songs, voice notes or podcast segments end to end
metronome set a tempo, beats per bar and subdivision, then practice with a steady click
online tuner play a note and see which pitch you are on and how many cents off it is
tone generator play a test tone at any frequency and waveform
audio visualizer see the frequencies in a song or in your voice, live
spectrogram a scrolling picture of sound: time goes left to right, pitch bottom to top, and brightness shows loudness
noise generator choose white, pink or brown noise and let it play