Audio Converter

Convert audio files between MP3, WAV, OGG, FLAC and M4A. Drop in as many files as you like, pick the target format and bitrate, and download the results one by one or all at once.

Everything runs locally in your browser. Your data never leaves your device.

Upload

Drop audio files here

MP3, WAV, OGG, FLAC, M4A, AAC, Opus and more. Click to choose files.

They never leave your browser.

Convert to

Format

Bitrate

Plays everywhere. 192 kbps is a good balance for music, 320 kbps is near transparent.

Next steps

Send this tool's output straight into another tool.

Audio Trimmer

Cut a section out of an audio file on a zoomable waveform timeline. Drag the start and end handles, play back just your selection, fade the edges if you like, and export the result as MP3, WAV, OGG, FLAC or M4A.

audio media

Hash Generator

Hash text or a file with MD5, SHA-1, SHA-256, SHA-512, SHA-3, BLAKE2, BLAKE3, CRC32 and more, all computed live as you type. Compare against an expected checksum and copy any digest.

dev security

Checksum Validator

Verify a checksum online: drop a file, paste the expected checksum and see instantly whether they match. The hash type is detected from the checksum itself, covering MD5, SHA-1, SHA-256, SHA-512, BLAKE3, CRC-32 and more, and sha256sum lines or whole checksum files can be pasted as-is.

dev security

Data Compressor

Compress text or a file with gzip, deflate, brotli or Zstandard and see the size before and after, the compression ratio and how long it took. One click tries every method and recommends the smallest result.

dev compress

Data Decompressor

Decompress gzip, deflate, brotli or Zstandard data from a file or pasted Base64 and read the result as text or download it. Detects the format from the magic bytes where possible, with a manual override.

dev compress

Hex Viewer

Inspect any file or text as a hex dump with offsets, byte values and an ASCII column. Jump to an offset, search for bytes or text, select a range to see it decoded as integers and strings, and copy or download the dump.

dev

Audio Inspector

See everything about an audio file: duration, format, codec, sample rate, bit depth, channels and bitrate, the embedded tags and cover art, plus measured peak and RMS levels and a waveform overview.

media audio

Audio Converter

Convert audio files between MP3, WAV, OGG, FLAC and M4A. Drop in as many files as you like, pick the target format and bitrate, and download the results one by one or all at once.

audio media converter

File Encryptor & Decryptor

Encrypt any file with a password using AES-256-GCM, or decrypt a file that was encrypted here. Strong key derivation and integrity protection built in.

security

About the Audio Converter Tool

This tool converts audio files between MP3, WAV, OGG, FLAC and M4A. Drop in one file or a whole batch, pick the target format, set the bitrate or quality where the format has one, and convert. Each result downloads on its own or the whole batch comes down as one zip.

Files convert one after another with a progress bar per file, and the list shows the size before and after so you can see what the conversion saved or cost.

What you can do

Convert WAV to MP3, M4A to MP3, FLAC to MP3 or OGG to MP3.
Turn an MP3 into WAV or FLAC for editing.
Batch convert many audio files in one go.
Pick the MP3 or M4A bitrate, from 96 to 320 kbps, or the OGG quality level.
Download every converted file at once as a zip archive.
Compare file sizes before and after conversion.

How to use the Audio Converter

1Drop in your audio files, or click to choose them. You can add more at any time.
2Pick the target format. MP3 and M4A take a bitrate, OGG takes a quality level, WAV and FLAC are lossless.
3Hit Convert and watch each file's progress. You can cancel a running batch.
4Download files one by one, or everything as a single zip.

Formats and quality, honestly

Converting between two lossy formats, say M4A to MP3, always costs a little quality because the audio is decoded and encoded again. Converting a lossy file to WAV or FLAC does not bring lost quality back, it only stops further loss, which is exactly what you want before editing. 192 kbps MP3 is a good balance for music, 320 kbps is close to transparent, and spoken word is fine well below that.

Title, artist and other tags are carried over where the target container supports them. Embedded cover art is not carried into the result.

How it runs

Conversion runs on ffmpeg compiled to WebAssembly. The engine downloads once (about 32 MB) on your first conversion and is cached after that. Files convert one at a time, so a big batch simply works through the queue. To cut a file down before or after converting it, send it to the Audio Trimmer, and to inspect a file's codec, bitrate and tags, use the Audio Inspector.

Credits

Open source does the heavy lifting in this tool. Thank you to:

ffmpeg.wasm
A WebAssembly build of FFmpeg, the audio and video toolkit behind half the media software you know.

Everything this site builds on is listed on the credits page.

Audio Inspector

See everything about an audio file: duration, format, codec, sample rate, bit depth, channels and bitrate, the embedded tags and cover art, plus measured peak and RMS levels and a waveform overview.

Turn a series of images into a video. Drop in your frames, reorder them, set the frame rate and resolution, and encode the result as MP4 or WebM, ready to play anywhere.

media video image converter

Image Converter

Convert images between JPEG, PNG, WebP and AVIF. Drop in as many as you like, pick a format, and dial in the quality for the lossy ones. When you convert to JPEG, choose the colour that fills any transparency. Live previews, download one or all at once.

media image converter

Image to Text (OCR)

Read the text out of a screenshot, photo or scan with OCR. Pick the language, watch the recognition progress, review the result with per-word confidence, and copy or download the extracted text.

media image text converter

Video to Frames

Extract still frames from a video. Grab every frame, every Nth one or one per second, or step through and pick single frames by hand. Choose PNG, JPEG or WebP for the output and download everything as a zip.