Convert FCW to DWG

A DWG copy is required when an FCW drawing must be edited in AutoCAD or another DWG-based CAD system, delivered to a client, or sent to a drafting service. FCW has limited support outside FastCAD-compatible programs, so conversion normally requires desktop CAD software or a documented intermediate format.

What the FCW format is

.fcw is the native drawing format associated with FastCAD and compatible FastCAD software. Depending on the application version, it can contain 2D geometry, layers, text, dimensions, blocks, hatches, and some 3D entities.

FCW files are usually found in older FastCAD projects, archived technical drawings, or files exchanged between FastCAD users. The format is proprietary, and support for individual entities varies by FastCAD release; AutoCAD and most general-purpose online converters do not open FCW directly.

What the DWG format is

.dwg is the native drawing format of AutoCAD and a standard exchange format for many professional CAD systems. It preserves editable drawing structures such as model-space geometry, layers, blocks, text and dimension styles, layouts, and—in applications that support them—solids and other advanced entities.

Choose the DWG release required by the receiving application. A newer DWG version may not open in older CAD software, while a version-compatible export can avoid an additional conversion step.

Convert with FastCAD

The FastCAD version that created the file is usually the best first option because it has the highest chance of interpreting proprietary entities correctly.

1. Make a copy of the original FCW file.
2. Open the copy in FastCAD and check the drawing units, scale, layers, text, dimensions, blocks, hatches, and layouts.
3. Use File → Save As or File → Export. If the installed release offers DWG, select it and choose the DWG version required by the recipient.
4. If DWG is unavailable, export an ASCII DXF file, preferably using the oldest DXF version that preserves the required objects.
5. Open the DXF in AutoCAD, BricsCAD, DraftSight, or another CAD program that can write DWG, then use File → Save As and select DWG.
6. Reopen the resulting DWG in the target CAD program and verify measurements, annotations, layers, layouts, and plotted output.

FastCAD menu names and available export formats differ by release. DWF is a viewing and plotting format, not a substitute for an editable DWG; exporting to DWF does not provide the normal FCW-to-DWG workflow.

Use another desktop CAD program

Some TurboCAD editions and releases list FastCAD or FCW import support and can save the opened drawing as DWG. Verify the exact product edition and version in the vendor’s supported-format list before installing or purchasing it; support is not universal across TurboCAD products.

1. In a compatible TurboCAD release, choose File → Open and select the FastCAD/FCW file type if automatic detection does not find the file.
2. Inspect units, geometry, fonts, line types, dimensions, blocks, hatches, and layouts.
3. Use File → Save As, select DWG, choose a compatible DWG release, and save under a new filename.
4. Validate the saved file in the recipient’s CAD application rather than relying only on the source program’s preview.

If no installed program can read FCW, obtain the FastCAD release that created the file or a release that explicitly documents compatibility. Do not rename .fcw to .dwg; the extension change does not convert the file.

Online conversion and intermediate files

Reputable general online services commonly support DWG and DXF but do not reliably advertise FCW input. An online service should be considered only when its current format list explicitly accepts FCW and the drawing is permitted to leave your organization.

For a DXF file exported from FastCAD, a reputable online CAD converter may be usable for the final DXF-to-DWG step, but desktop AutoCAD, BricsCAD, DraftSight, or the ODA File Converter provides better control over DWG version selection and validation. ODA File Converter can convert supported DWG/DXF files between versions; it does not read FCW directly.

Quality and compatibility checks

• Confirm units and insertion scale. A drawing can open without errors and still measure incorrectly if units were missing or interpreted differently.
• Check fonts, text styles, line types, hatch patterns, dimension styles, blocks, external references, and print layouts. Missing resource files can cause substitutions or omissions.
• Expect possible loss of associative dimensions, custom entities, parametric features, application-specific annotations, 3D solids, and metadata, especially through DXF.
• Some unsupported objects are converted to simple lines, arcs, or blocks; others may disappear. Compare critical dimensions and geometry with the original before delivery.
• Keep the original FCW file and the exported DXF or DWG. Conversion is not reversible, and saving over the source can destroy information that the target format cannot represent.