---
title: Convert MP3 to WAV API
slug: mp3-to-wav-conversion
url: https://apyhub.com/apyhub/service/mp3-to-wav-conversion
provider: ApyHub
categories: [Audio Processing, File Conversion]
tags: [audio-conversion, mp3-to-wav, wav, audio-processing, file-conversion]
auth: api_key
---

# Convert MP3 to WAV API

Convert MP3 files or public audio URLs to WAV. Get the result as a binary download or a signed URL for audio workflows and processing.

## Endpoints

| Method | Path | Description | Atoms |
| --- | --- | --- | --- |
| POST | `/convert/audio/mp3-file/wav-file` | What it does Converts an uploaded MP3 file to WAV format and returns the converted file as a binary… | 100 |
| POST | `/convert/audio/mp3-file/wav-url` | What it does Converts an uploaded MP3 audio file to WAV format using a multipart request. The respo… | 100 |
| POST | `/convert/audio/mp3-url/wav-file` | What it does Converts an audio file from a publicly accessible URL into WAV format and returns the… | 100 |
| POST | `/convert/audio/mp3-url/wav-url` | What it does Converts an audio file available at a URL into a WAV file. You send the source file UR… | 100 |

## About

## What it does
MP3 to WAV Converter turns an MP3 audio file or a public audio URL into a WAV file.

Send `file` as binary data to the multipart endpoints, or send `url` to the URL-based endpoints. The service accepts MP3 audio files up to 100 MB in the multipart flow, and it returns either the converted audio as a binary download or a signed URL in `data`, depending on which endpoint you call.

Use MP3 to WAV Converter when you need uncompressed WAV output for editing, speech workflows, audio analysis, or systems that require WAV rather than MP3. The response shape is simple, so it fits cleanly into file-processing pipelines and backend jobs.

Choose the download endpoints when you want the WAV file returned directly, or the signed-URL endpoints when your application prefers to fetch the result separately.

## Usage

Authenticate with an ApyHub API key in the `apy-token` header.
Full docs and a live playground: https://apyhub.com/apyhub/service/mp3-to-wav-conversion