MIDI Player | Play MIDI Files Online Free

Play MIDI files online with a scrolling piano roll, per-track mute and solo, tempo control and MIDI to WAV export. Inspect every note and event. No upload.

Also known as: midi player · online midi player · play midi file · midi file player · midi to wav · midi viewer · midi piano roll viewer · mid file player · midi event viewer · open midi file online

developer utilities

file converters

viewers

MIDI File

Drop a MIDI file here, or click to browse

.mid and .midi (format 0, 1 and 2), .kar karaoke and .rmi files. Opened in your browser and never uploaded.

Player and Piano Roll

Your MIDI file will appear here

Open a .mid file to play it in the browser, see every note on a piano roll, mute or solo tracks, slow it down or speed it up, read each event with its tick and time, and save the song as a WAV file.

Playback starts after you press Play. Nothing is uploaded.

About MIDI Player

MIDI Player is used to play and inspect MIDI files in a web browser without installing a sequencer or a DAW. It reads Standard MIDI Files in format 0, 1 and 2, karaoke .kar files and RIFF .rmi files, draws every note on a piano roll, lists each event with its exact tick and time, plays the song through a built-in synthesizer and saves it as a WAV file. Files never leave your device.

Key Features

Reads format 0, 1 and 2 MIDI files, .kar karaoke files and .rmi wrappers, including running status, SysEx, SMPTE timing and files that are cut short
Scrolling piano roll colored by track, with zoom, a separate drum lane, bar lines from the time signature and click-to-seek
Play, pause, seek, per-track mute and solo, tempo from 50% to 200% and a volume control
MIDI to WAV export at 16-bit, 44.1 kHz stereo, peak-normalized to -1 dBFS, that follows your mute, solo and tempo settings
Event list with the tick, time, track and channel of every note, controller, program change, pitch bend, tempo, lyric and marker
Plain text report plus a JSON file of every note with its start and end in seconds
Opens dense black MIDI files with millions of notes, up to 64 MB, and thins passages too dense to play in real time so the audio keeps its timing

Use Cases

Preview a MIDI file from MuseScore, GarageBand, FL Studio or a video game music archive before dragging it into your DAW
Turn a MIDI file into a WAV for a YouTube video, a podcast intro or a PowerPoint slide
Solo the melody or bass line to learn a part on piano or guitar at 75% speed
Check which General MIDI instruments and channels a file uses before sending it to a keyboard or sound module
Debug MIDI your own code writes with mido, music21 or Tone.js by reading its tempo map, note pairs and raw events
Read the lyrics and timing in a karaoke .kar file before a sing-along night

Supported Formats

.mid (format 0, 1 and 2)

.midi

.kar (karaoke)

.rmi (RIFF MIDI)

WAV export (16-bit, 44.1 kHz)

JSON note export

Related Keywords

midi player

online midi player

play midi file

midi file player

midi to wav

midi viewer

midi piano roll viewer

mid file player

midi event viewer

open midi file online

Why does a MIDI file sound different in every player?

A MIDI file stores notes and instructions, not recorded sound, so what you hear depends on the synthesizer that plays it. This player uses a small synthesizer built from oscillators, with one sound per General MIDI instrument family and synthesized drums, instead of downloading a sample library. The notes, timing, tempo changes and dynamics are exact, but the tone will not match the sampled instruments in GarageBand, MuseScore or a hardware sound module. Use the WAV export for a quick preview and your DAW for a final mix.

Privacy & Security

All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.

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Frequently asked questions

What is MIDI Player used for?

Play MIDI files online with a scrolling piano roll, per-track mute and solo, tempo control and MIDI to WAV export. Inspect every note and event. No upload.

Is MIDI Player free to use?

Yes. MIDI Player is completely free with no usage limits, and there is no paid tier required to use it.

Do I need an account to use MIDI Player?

No. MIDI Player works immediately in your browser with no signup, login, or email address required.

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