AUDIO → MIDI → GROWTOPIA
Review separate MIDI instruments, edit every note, then fit the arrangement to Growtopia.
Reuse identical phrases with Repeat Start/End blocks. Keeps every note, the timing, and tempo.
Preview the saved columns before applying. Compression can be undone.
Layout test: 14-row note lanes stacked top to bottom across the buildable width. Partial lanes and repeat blocks are checked individually. Assumes the chosen area is clear.
Click any note to edit it. Muted instruments and disabled notes are excluded from MIDI export and block conversion. Colors identify instruments; dim notes are disabled. The MIDI keeps its full pitch range. “Fit to Growtopia” applies when converting to blocks.
Uses the first few piano/bass notes as its cue and searches throughout the song, ignoring snare differences. Higher sensitivity accepts more note differences and small timing shifts. Preview the seam before cropping.
Find a loop ending or drag the blue handles.
Blue handles mark the crop. Green/red still show world fit. Cropping changes playback and exports; Undo restores the song.
Fuller fit retains the low harmony by moving the arrangement together.
BUILD YOUR ARRANGEMENT
Exact block counts for the current edited song. Repeated phrases are counted once in the placed layout, including Repeat Begin/End blocks. Expand a type to see its pitches or drum sounds.
| Sheet music type | Blocks needed | Splice trees | Ingredient seeds for these trees | Expected blocks |
|---|
Obtain the ingredient seeds listed above, then use one of each recipe seed per tree. Piano/Bass Note seeds for sharps and flats are ingredients, separate from the finished note blocks you place.
Recipes and maximum harvests come from Growtopia Wiki sheet music, Blank sheet music, Piano and Bass. The Wiki lists up to 8 blocks per tree for these note types; that is a maximum, not an average. We use a planning assumption of 3.75 blocks/tree and a 10% surplus by default. Change either to match your harvests. Trees = round up (blocks needed × (1 + margin / 100) ÷ blocks/tree), calculated separately per type. Random drops can leave a shortfall; harvest more as needed. No equipment bonuses, seed returns or repeated farming cycles are assumed. This is a direct-recipe shopping list, not a calculation for farming all ingredients from basic seeds. No blank blocks are counted for empty grid cells. Drum row names follow the Wiki drum mapping. Recipes checked 5 November 2026. Recipe facts adapted from Growtopia Wiki contributors; CC BY-NC-SA.
AUDIO IN. NOTE BLOCKS OUT.
NoteForge is a Growtopia song converter and Growblox music converter that runs in your browser. Turn a recording into an editable arrangement, review the notes, and save MIDI or GMSF for compatible music tools.
Import MP3, WAV, OGG or M4A audio to estimate piano, bass and drum notes. Review the MIDI instrument tracks, adjust sensitivity and harmonic cleanup, then convert to the Growtopia note grid. Clear note-block recordings work best; dense recordings need review.
Prepare Growblox note-block music in the same editor. Set your buildable world dimensions, compare the song with the available space, and save the arrangement as MIDI or GMSF for compatible tools. The world-size test starts at 100 × 54 blocks.
Use repeat blocks to save space with exact timing, or lower the grid BPM for more compression with coarser timing. Find a suggested loop ending, drag the crop handles, preview the seam, and keep the section you want.
Yes. Import your audio, review the detected notes, then choose Export GMSF or Export MIDI. You can also open an existing MIDI or GMSF project and edit its note blocks.
Exports use ordinary piano, bass and drum blocks, plus Repeat Start/End blocks when repeat compression is applied. NoteForge does not create Audio Gears.
Audio decoding and note detection happen in your browser. Your imported audio stays on your device, and the project is saved in this browser's local storage.
Audio-to-MIDI transcription is approximate. Clear melodies and note-block recordings are easier to detect than dense mixes. Listen to the result and use sensitivity, harmonic cleanup and the editable grid to improve the arrangement.
Independent music tool. Growtopia artwork and sounds belong to their respective owners. NoteForge is not an official Growtopia or Growblox product.