🚀 Welcome to BlackRatio Studio — Free browser-based music tools, audio-to-MIDI converters, and notation studio!
BlackRatio Studio

All Free Online Music Tools

Explore our suite of 16+ free browser-based music converters, editors, analyzers, and utilities.

Popular

MP3 to MIDI Converter

Convert MP3 audio recordings into accurate MIDI notes and piano rolls directly in your browser.

MP3 → Standard MIDI (SMF 0/1)Open Tool →

WAV to MIDI Converter

Transcribe high-fidelity uncompressed WAV audio into Standard MIDI files with low-latency decoding.

WAV (16/24/32-bit PCM) → Standard MIDI (.mid)Open Tool →
Essential

MIDI to Sheet Music

Transform Standard MIDI files into beautiful, printable sheet music and vector scores.

Standard MIDI (.mid, .midi) → Printable PDF ScoreOpen Tool →

MIDI to Piano Roll

Interactive canvas piano roll studio to visualize, edit, add, and rearrange MIDI notes.

Standard MIDI (.mid) → Edited MIDI (.mid)Open Tool →

MusicXML to MIDI Converter

Convert MusicXML score files into playable Standard MIDI files with instrument mapping.

MusicXML (.xml, .musicxml) → Standard MIDI (.mid)Open Tool →

Sheet Music to PDF

Generate crisp, publication-quality printable PDF sheet music from MusicXML or note data.

MusicXML (.xml) → Print-Ready PDF (A4/Letter)Open Tool →

Sheet Music Transposer

Transpose scores and notation by semitones or keys with automatic accidental correction.

MusicXML (.xml) → Transposed MusicXMLOpen Tool →
Popular

BPM Detector

Detect the tempo (BPM) of any song or audio file using onset autocorrelation and tap tempo.

MP3 → BPM ValueOpen Tool →

Key & Chord Finder

Analyze songs to detect musical key, major/minor tonality, and chord progression timelines.

MP3 → Detected Key & ModeOpen Tool →

Audio to Sheet Music

Transcribe singing, solo instruments, and recorded melodies directly into musical notation.

MP3 → MusicXML ScoreOpen Tool →

Piano Transcription

Transcribe piano recordings into dual-staff grand scores (treble and bass staves) and MIDI.

Piano Audio (MP3, WAV) → Dual-Staff Grand ScoreOpen Tool →

Guitar Tab Generator

Generate playable guitar tablature from MIDI, audio, or notes with ergonomic fingering solvers.

MIDI (.mid) → ASCII TablatureOpen Tool →

Sheet Music Image to MIDI (OMR)

Scan sheet music images or photos and convert notes into playable MIDI files.

PNG → Standard MIDI (.mid)Open Tool →

Multi-Instrument to MIDI

Separate and transcribe music recordings into distinct instrument MIDI tracks.

MP3 → Multitrack Standard MIDIOpen Tool →
New

AI Piano Cover Arranger

Transform songs or melodies into playable piano solo arrangements with multiple difficulty presets.

MIDI (.mid) → Arranged Piano MIDIOpen Tool →

AI Sheet Music Editing Assistant

Interactive notation editor with structured commands (transpose, tempo, quantize, add measures).

MusicXML (.xml) → Edited MusicXMLOpen Tool →

MIDI to MP3/WAV Converter

Render MIDI files into studio-quality WAV audio using acoustic instrument synthesis.

Standard MIDI (.mid) → 16-bit 44.1kHz WAV AudioOpen Tool →

Audio Trimmer & Cutter

Cut, trim, and slice audio files with visual waveform selection and millisecond accuracy.

MP3 → Trimmed WAV AudioOpen Tool →

Online Metronome

Sample-accurate browser metronome with custom BPM, time signatures, and accent beats.

User Tempo Input → Sample-Accurate Audio ClickOpen Tool →

Online Guitar Tuner

Tune your guitar with live microphone pitch detection and real-time cents deviation needle.

Microphone Audio Stream → Real-Time Tuner Gauge & Cents DeviationOpen Tool →

Online Piano Keyboard

Interactive 88-key playable virtual piano with sustain pedal, recording, and MIDI export.

Computer Keyboard → Recorded MIDI FileOpen Tool →

Chord Progression Generator

Generate harmonically rich chord progressions across genres with voice leading and MIDI export.

Key & Genre Selection → Chord Progression MIDIOpen Tool →

Music Scale Finder

Explore musical scales, church modes, pentatonics, and blues scales with visual staff notes.

Root Note & Scale Type → Scale NotesOpen Tool →

Tap Tempo BPM

Calculate exact beats per minute in real time by tapping any key or button.

Spacebar / Tap Clicks → Live BPM ValueOpen Tool →

MIDI Transposer

Transpose entire MIDI files up or down by semitones or octaves with track preservation.

Standard MIDI (.mid) → Transposed MIDI (.mid)Open Tool →