mp3tomidi Audio Tools

mp3tomidi.art
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Convert audio to MIDI, detect BPM/key, split stems, and more with AI. All tools run in your browser for free, with complete privacy.

Description

mp3tomidi.art is a comprehensive, privacy-first, browser-based music analysis and conversion toolkit. Its primary positioning is as a free, accessible platform for musicians, producers, and creators, eliminating the need for expensive desktop software. The target audience includes music producers, DJs, educators, students, and game developers. Its core features revolve around AI-powered audio-to-MIDI conversion, BPM/key detection, chord recognition, stem separation, and MIDI-to-audio rendering. The content is highly technical yet user-friendly, focusing on practical tools for music creation and analysis. The user experience is streamlined for instant use with no signup required, leveraging modern web technologies like TensorFlow.js and Web Audio API for local, in-browser processing. Technical highlights include the use of Spotify's open-source Basic Pitch neural network, ensuring professional-grade accuracy while maintaining complete user privacy as files never leave the local device.

Installation

Not sure where to start — ask an assistant to walk you through:

Features

🎵 AI-Powered Audio to MIDI
Converts audio files like MP3 or WAV into editable MIDI using Spotify's Basic Pitch neural network. The process runs entirely in your browser via TensorFlow.js, extracting notes, timing, and velocity for use in any DAW.
🔍 Comprehensive Audio Analysis Suite
Offers a suite of tools including BPM detection, musical key identification, and chord progression analysis. These tools use digital signal processing (FFT, chroma features) locally in the browser to provide instant, pri
🎛️ Complete Music Production Toolkit
Provides an end-to-end workflow from analysis to output. Features include a stem splitter for isolating instruments, MIDI-to-audio rendering in multiple formats, and MIDI-to-sheet music conversion with MusicXML export, a

Use cases

Convert vocal melody to MIDI synth line
Detect BPM/key of a track for DJ mixing
Isolate vocals from a song for remixing
Transcribe guitar chords from a recording
Generate sheet music from a piano performance

FAQ

mp3tomidi is a free, browser-based toolkit for musicians that converts audio to MIDI, detects BPM/key/chords, splits audio stems, and renders MIDI to audio, all with AI-powered accuracy and complete privacy.

Yes, all core tools like BPM detection, key detection, chord analysis, and MP3-to-MIDI conversion are completely free forever with no signup, credit card, or hidden fees required.

Most tools, including MIDI conversion and BPM detection, run 100% in your browser; your audio never leaves your device. Only the Stem Splitter uploads files to a backend server for advanced AI processing.

The platform supports MP3, WAV, OGG, FLAC, M4A, AAC, and WebM files up to 50 MB in size for upload and analysis.

BPM detection is typically accurate within 1-2 BPM for tracks with a steady tempo and provides a confidence score. Accuracy may be lower for complex or tempo-changing music.

Yes, exported MIDI files are standard Type 0 format, fully compatible with major DAWs like Ableton Live, Logic Pro, FL Studio, and GarageBand.

No installation is needed. All tools work directly in modern web browsers like Chrome, Firefox, Safari, or Edge.

It uses Spotify's open-source Basic Pitch neural network, trained on thousands of hours of music, to detect pitch, onset, and velocity from audio, followed by custom post-processing for clean MIDI output.

The Stem Splitter uses an AI model backend to separate an audio file into isolated stems for Music, Vocals, Bass, and Drums, which is more advanced than simple EQ filtering.

Privacy is foundational; for browser-based tools, your files are never uploaded. The site does not track uploads, store your audio, or use data for model training.

Specs

Type Tool
SectionAudio
Pricing free
Platform Web only
Systems web
Hostingcloud
Installsaas
Site languageen
Launched2026-07-01

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