mp3tomidi.io - Free online MP3 to MIDI converter
Officially listedA completely free, privacy-first AI audio-to-MIDI converter that runs in your browser.
mp3tomidi.io - Free online MP3 to MIDI converter
mp3tomidi.io is a browser-based, privacy-first online AI audio conversion tool. Designed for musicians, creators, and music lovers, it runs lightweight machine learning models locally in the browser to quickly transcribe MP3, WAV, and similar audio into editable MIDI files containing pitch, duration, and velocity.
Core Capabilities
- Local AI processing: Audio files are processed directly in the browser by local machine learning models — nothing is uploaded to the cloud, maximizing user data privacy.
- Built-in piano roll: A visual editor similar to a professional music workstation (DAW) lets you move, merge, adjust, or delete notes directly on the web page.
- Real-time comparison preview: Before downloading the file, play the converted MIDI against the original audio side by side in real time, making it easy to correct obvious wrong notes.
- Smart polyphony support: Strong polyphonic detection handles not just single-note melodies but chords, with parameter presets tuned for specific sources like vocals, piano, and guitar.
- Standard format export: Generates standard
.MIDfiles that plug seamlessly into every mainstream digital music production tool, including Ableton Live, FL Studio, and Logic Pro.
Use Cases Great for music production beginners, independent singer-songwriters, beatmakers, and creators who need to capture inspiration fast. Whether converting improvised humming or simple instrument recordings into MIDI, or looking for a starting point for a track, it offers enormous convenience — it is not suited to complex advanced orchestral works or full commercial mixes.
Unique Advantages Compared with a pure conversion engine, mp3tomidi.io innovates with a built-in web editor that saves major post-correction time in a DAW; compared with deeply installed software, it has an extremely low barrier — truly 'zero-friction,' lightweight operation with absolute data privacy protection.
Editor's Verdict As a completely free online utility, mp3tomidi.io solves the lightweight audio transcription pain perfectly. It wraps sophisticated AI recognition in an intuitive, editing-capable interface, ready to use with no signup. If you need a privacy-protecting, efficient idea converter, this is absolutely a must-have practical tool.
Pricing
### 💰 定价模式：免费 **起步价**：免费 #### 主要方案 - **免费版**：免费 - 无需注册、无订阅费、无隐藏付费墙，单次处理文件限制最大20MB或3分钟时长。
FAQ
Is mp3tomidi.io free?
Yes, mp3tomidi.io is currently completely free, with no subscription fees or hidden paywalls, and every feature can be used directly without registering an account.
What can mp3tomidi.io be used for?
It automatically converts and transcribes audio files in MP3, WAV, and similar formats into editable MIDI files containing pitch, duration, and velocity, ready for further creation in music production software.
Is it safe to process audio files on mp3tomidi.io?
Very safe. It uses local machine learning technology — all processing happens in your browser's local environment, and audio files never upload to any cloud server, strongly protecting your privacy.
What are mp3tomidi.io's file size and length limits?
Single conversions currently have some limits: a maximum upload of 20 MB per audio file, or up to 3 minutes of audio, so long pieces cannot be processed in one pass.
How does mp3tomidi.io differ from Basic Pitch?
Both are free AI audio-to-MIDI tools, but mp3tomidi.io wins with its built-in piano roll editor, letting you preview and fine-tune wrong notes directly on the web page.
Which music software supports the exported MIDI files?
mp3tomidi.io exports standard .MID format files that work seamlessly with virtually all mainstream digital audio workstations (DAWs), such as Ableton Live, FL Studio, and Logic Pro.