AFF to WMF Converter

Free AFF to WMF converter — online, no software required

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Dead-Simple Process

Upload your AFF, pick WMF, download the output. Three clicks and you are done — no expertise required.

Data Protection

Your AFF files are deleted right after conversion. WMF output is automatically removed from servers within 24 hours.

Cross-Platform Access

Run the AFF to WMF converter from any device — desktop, tablet, or phone. All you need is a web browser.

How to convert AFF to WMF

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose wmf or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your wmf file right afterwards

About formats

AFF (Acorn Draw) is a vector graphics file format native to Acorn Computers' RISC OS operating system, introduced with the Draw application bundled in RISC OS 2 in April 1989. The Draw application shipped as a standard component of every RISC OS installation, providing users with a capable vector illustration tool at no additional cost. AFF files store vector objects as a sequence of tagged data blocks, each containing object type, bounding box, and type-specific data — supported objects include paths with straight lines and Bezier curves, text objects with font references, sprite (bitmap) objects, groups, and tagged objects for application-specific extensions. Path objects use cubic Bezier curves with move, line, and curve elements, supporting variable line widths, join styles, dash patterns, and flat color fills. The coordinate system uses RISC OS draw units at 1/180 inch resolution, providing precision for both screen display and print output. One advantage is the straightforward binary structure — the tagged block architecture makes AFF files simple to parse and generate programmatically. Native operating system integration is another strength: RISC OS renders Draw files natively in its desktop environment, treating vector graphics as first-class objects alongside bitmaps. While Acorn Computers ceased operations in the late 1990s, RISC OS continues under active open-source development, and AFF files remain supported through the platform's drawing applications and conversion utilities.
Developer: Acorn Computers
Initial release: 1989
WMF (Windows Metafile) is a vector graphics format created by Microsoft, introduced with Windows 3.0 in May 1990 as the platform's native format for recording and replaying graphical operations. A WMF file captures a sequence of GDI (Graphics Device Interface) drawing commands — lines, rectangles, ellipses, polygons, text, and bitmap blits — in the order they were issued, serializing screen or printer output into a replayable file. The format uses a 16-bit coordinate space and organizes records as a linear stream of function calls with their parameters, preceded by a header specifying the bounding rectangle and resolution. WMF became deeply integrated into the Windows ecosystem as the default format for clip art collections, Office document graphics, and clipboard vector interchange during the 1990s — Microsoft Office shipped with thousands of WMF clip art images that defined a visual era of desktop publishing. One advantage is pervasive compatibility: virtually every Windows application from the past three decades can render WMF content, making it one of the most widely supported vector formats in existence. The lightweight recording model is another strength — WMF files are compact and render quickly because they replay native system drawing calls rather than interpreting a complex graphics language. While 16-bit limitations and lack of transparency and Bezier curves led Microsoft to develop EMF as a 32-bit replacement, WMF files remain ubiquitous in legacy documents and across current Windows software.
Developer: Microsoft
Initial release: May 22, 1990

Frequently Asked Questions

Why convert AFF to WMF?

Acorn Draw files cannot be opened by any current software. WMF is widely recognized on Windows and works in Office apps and older design tools.

What applications support WMF?

Microsoft Office suite, LibreOffice, Paint.NET, and Inkscape can all import WMF files for viewing or editing.

Will my AFF graphics stay sharp in WMF?

WMF is a vector metafile format — it preserves resolution independence, keeping lines and shapes clean at any size.

Is AFF to WMF conversion available for free?

Yes — convert freely without signing up. Larger workloads benefit from premium plans with extended limits.

How secure is the upload process?

Convertio removes your AFF file immediately after conversion and deletes the WMF result within 24 hours.