Extra is a free productivity add-in for Autodesk® Revit® focused on automating small but repetitive measurement and calculation tasks that many architects, engineers, designers, and BIM users still perform manually. The add-in is built around a simple idea: users should not need to leave Revit or use an external calculator for basic totals such as line lengths, filled-region areas, room areas, or perimeters. Instead, Extra provides quick commands that calculate selected geometry and report the results directly, helping users save time during everyday production work.
Core Purpose
The core purpose of Extra is to remove unnecessary manual math from Revit workflows. W7k describes the tool as a response to the common situation where project teams manually add the lengths of lines or calculate areas and perimeters using a calculator. Extra addresses those small friction points by providing lightweight commands that perform the calculations automatically from selected Revit elements. While the individual tasks may be simple, automating them can improve speed, reduce transcription errors, and make day-to-day documentation and checking tasks more efficient.
Key Capabilities
- Measure length of selected lines: Adds together the lengths of selected Revit lines and reports the total length.
- Measure total area of selected regions: Calculates the combined area of selected filled regions.
- Measure outside perimeter of selected regions: Calculates the exterior boundary length of selected regions, focusing on outside loops.
- Measure total perimeter of selected regions: Adds together the full perimeter values of selected filled regions.
- Measure total area of selected rooms: Calculates the combined area of selected rooms.
- Measure total perimeter of selected rooms: Adds together the perimeter values of selected rooms.
- Copy results to the clipboard: The calculated values are automatically copied to the clipboard, making it easier to paste results into notes, schedules, spreadsheets, markups, or correspondence.
- DWG import warning: Version 1.2 adds a warning that alerts users when DWG files are being imported into a project, helping teams avoid an action that can introduce coordination, file-size, and standards issues if not managed carefully.
Workflow Value
Extra is valuable because it targets common low-level tasks that interrupt modeling and documentation work. A user may need to total detail lines, verify the area of several filled regions, check room quantities, confirm room perimeters, or quickly extract a calculated value for use elsewhere. Without automation, these tasks can require manual selection, reading individual values, writing numbers down, and adding them outside Revit. Extra reduces those steps by turning the process into a selection-based command with an immediate result.
Benefits for BIM and Production Teams
For BIM coordinators, Revit support specialists, and production users, Extra can help standardize quick-check workflows and reduce calculation mistakes. Because results are copied automatically to the clipboard, users can quickly capture values for coordination notes, issue tracking, quantity checks, documentation comments, or internal review records. The DWG import warning also provides a lightweight model-management safeguard by reminding users when they are about to import CAD data rather than link or otherwise manage it through controlled project standards.
Compatibility and Availability
Extra is listed as a free, digitally signed Windows add-in for Autodesk® Revit®. Autodesk marketplace information identifies version 1.2.0, last updated in April 2025, with compatibility listed for Revit 2021 through Revit 2026. W7k also provides additional information, help references, short command descriptions, and animated examples through its own tool page.
Overall Summary
Extra by W7k is a small but useful Revit add-in that automates everyday measurement calculations and helps users avoid unnecessary manual math. Its tools for totaling line lengths, filled-region areas and perimeters, and room areas and perimeters make it helpful for quick checks, documentation support, and lightweight quantity verification. Combined with automatic clipboard copying and the added DWG import warning, Extra provides practical production value without trying to be a large or complex BIM tool. It is best understood as a free utility add-in that saves time by eliminating small repetitive tasks that should not require a calculator.
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| W7k Tools - Extra |
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| Measure Length of Selected Lines |
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| Measure Total Area of Selected Regions |
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| Measure Outside Perimeter of Selected Regions |
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| Measure Total Perimeter of Selected Regions |
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| Measure Total Perimeter of Selected Rooms |
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| Measure Total Area of Selected Rooms |
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| Extra uses context menu in Revit 2025. Just right click! |
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| DWG Import Warning Message |
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