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Convert FUR to DMF

Verified by Adam B.· reviewed by FE Editorial ·updated Jun 16, 2026
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Is it possible to convert FUR to DMF?
Yes - FUR converts to DMF.

Open your .fur in Furnace and use File > Save As, choosing the DefleMask module (.dmf) type. This only works cleanly for single-chip songs that DefleMask supports; anything using Furnace-only chips or features will be degraded or refused.

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Tested on macOS, Windows & Linux
Last verified Nov 2026

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Why convert FUR to DMF?

Furnace is a modern successor to DefleMask, so people convert back to .dmf mainly to open a song in DefleMask itself or in tools that only read the older DefleMask format. Furnace is the only program that reads .fur, so the conversion has to start there.

How to convert FUR to DMF

Furnace (Save As) FREE

In Furnace, open the .fur, then File > Save As and pick DefleMask module (.dmf) as the file type. Confirm the overwrite/limitation warning.

Furnace on Windows/macOS/Linux OPEN-SOURCE

The same Save As path works on every desktop build of Furnace; the .dmf writer is built in with no plugins needed.

About these formats

.FUR Furnace Module

A .fur file is a Furnace Module, the native project file of Furnace, a free multi-system chiptune tracker. It stores a whole song as patterns, instruments, wavetables, and samples aimed at…

Open .FUR details →
.DMF X-Tracker / D-Lusion Digital Music Format

A DMF file is a tracker music module created by X-Tracker, a DOS music composition tool from D-Lusion in the mid-1990s. To play it today, use OpenMPT or XMPlay, both free for Windows.…

Open .DMF details →

Quality & what to watch

  • DefleMask supports far fewer chips and effects than Furnace, so multi-chip songs, Furnace-only instruments, and macros are dropped or flattened.
  • Furnace warns you before writing .dmf and recommends keeping a .fur master; treat the .dmf as a lossy export.
  • Newer Furnace features saved into a .dmf may still fail to open correctly in older DefleMask versions.

Frequently asked questions

Can DefleMask open a Furnace .dmf?
Usually yes for simple single-chip songs, but complex Furnace features may not survive the round trip.
Is there an online .fur to .dmf converter?
No reliable one - Furnace's own Save As is the practical route.
Will my song sound identical?
Not always; anything DefleMask can't represent is removed, so playback can differ.
Should I keep the .fur file?
Yes, always keep the .fur as your master since .dmf export is lossy.