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

# Convert MP3 to WAV API

Convert MP3 uploads or public audio URLs to WAV. Get binary output or a signed file URL for editing, analysis, and compatibility workflows.

## Endpoints

| Method | Path | Description | Atoms |
| --- | --- | --- | --- |
| POST | `convert/audio/mp3-file/wav-file` | What it does Converts an uploaded MP3 file to WAV and returns the converted file as binary data. Th… | 100 |
| POST | `convert/audio/mp3-file/wav-url` | What it does Converts an uploaded MP3 file to WAV using a multipart form upload, and returns a JSON… | 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 public URL into WAV format. The request sends th… | 100 |

## About

## What it does
MP3 to WAV Converter turns an MP3 audio file into a WAV file. Send a file upload or a publicly accessible audio URL, and get back either the converted audio as a binary download or a signed URL to the generated file.

Use the multipart endpoints when you already have the source file in your request body. The `file` field accepts an MP3 audio file up to 100 MB. If you need to fetch the result directly, choose the download variant; if you want a hosted result you can pass around, choose the signed URL variant.

Use the URL endpoints when the source audio already lives at a public URI. The request body takes a `url`, and the response matches the output mode you select: binary WAV data for download, or a `data` field containing a URI for the converted file.

MP3 to WAV Converter is useful when you need a standard uncompressed audio format for editing workflows, speech analysis pipelines, archival storage, or compatibility with tools that expect WAV input.

## Usage

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