Free Audio Tools
Convert between MP3, WAV, FLAC, AAC and OGG, trim to a time range, merge tracks, normalize loudness, resample and adjust quality — free, no signup. Every tool runs in your browser, so your audio never leaves your device.
Core Audio Tools
Audio Converter
Turn audio into MP3, WAV, FLAC, AAC or OGG with a quality you control. The conversion runs entirely in your browser — the file never leaves your device.
Open ToolTrim Audio
Cut the part you need from a song, voice note or recording. Set the start and end times, preview, download — processed in your browser.
Open ToolAdjust Audio Quality
Re-encode audio at a lower bitrate to shrink it, or step up to a cleaner format. Pick the target, download — all in your browser.
Open ToolResample Audio
Set an audio file to the exact sample rate and channel count a platform or device requires, then download — processed in your browser.
Open ToolNormalize Audio
Make a quiet recording louder at a consistent level. Peak or loudness mode, real measurement, real gain — all in your browser.
Open ToolMerge Audio
Join multiple audio files into a single track, in the order you choose. Different formats and sample rates are handled for you.
Open ToolFormat Converters
WAV to MP3
Turn bulky WAV recordings into compact MP3 files. Pick a bitrate, download — the conversion runs in your browser.
Open ToolMP3 to WAV
Uncompressed WAV output from any MP3 — the format editors, samplers and processing tools want. Runs entirely in your browser.
Open ToolM4A to MP3
Turn iPhone voice memos and Apple-format audio into MP3 files that play anywhere. Pick a bitrate, download — no upload.
Open ToolFLAC to MP3
Take tracks out of a lossless FLAC library and into MP3 files for the car, phone or anywhere else. Bitrate is your call.
Open ToolOGG to MP3
OGG and Opus files from Discord, recorders and downloads become MP3s that play everywhere. Runs in your browser.
Open ToolEleven audio tools that run entirely in your browser: a universal converter covering MP3, WAV, FLAC, AAC and OGG, plus trim, merge, normalize, resample and bitrate control — and the format pairs people search for (WAV to MP3, M4A to MP3 and friends) as their own pages.
Your audio is decoded, processed and re-encoded on your own device. Voice notes, meeting recordings and unreleased tracks stay private because nothing is uploaded — the browser does all the work, with a built-in MP3 encoder covering the one format every device plays.
How the Audio Tools Work
Every tool on this page decodes your audio with the WebCodecs API inside your own browser, processes the samples, and re-encodes the result — with a built-in LAME encoder covering MP3 output on browsers that lack a native one. There is no upload step, no queue, and no copy of your recording left on anyone's server.
The format list each tool shows is checked against your browser when the page loads, so you only ever see outputs that will genuinely work. Voice notes, meeting recordings, unreleased mixes — they stay on your device.
Frequently Asked Questions
Yes — all 11 tools are free with no signup, no watermark and no daily limit. Processing happens on your own device, so there is no server cost to recover.
No. Every tool decodes and encodes audio in your browser using the WebCodecs API (plus a built-in MP3 encoder). Disconnect from the internet after the page loads and the tools keep working.
MP3, WAV, FLAC, AAC (.m4a) and OGG (Opus). The exact list is checked against your browser when the page loads — you only see formats your browser can genuinely produce.
Codec support varies between browsers. The tools feature-detect at runtime and hide anything your browser cannot encode, rather than producing a broken file. Chrome, Firefox and Edge support the most formats.
Chromium browsers cannot encode MP3 natively, so this site ships a built-in LAME MP3 encoder that loads automatically when needed. The result plays everywhere, as MP3 should.
192 kbps is the sensible everyday choice, 320 kbps when quality matters most, 128 kbps for voice and podcasts, 96 kbps when size beats everything.
No fixed limit, but audio is processed in your device's memory. Typical songs, voice notes and podcast segments are effortless; hours-long files need a capable machine.
Yes — the tools run in mobile Safari and Chrome, and downloads land in your Files app or Downloads folder as usual.