AI-generated cabin concept, used for illustration.
In this guide
When cabin plans cross borders, choose one working unit system for the project and make that choice visible on every drawing. A casual mix of millimeters, meters, inches and feet invites avoidable errors.
Convert values, then review the design
The exact conversion is 1 inch = 25.4 millimeters and 1 foot = 0.3048 meters. That does not mean a locally available material will match an imported product simply because its nominal dimension converts neatly.
For an illustrative calculation, 12 feet is 3.6576 meters. Rounding that to 3.7 meters changes the dimension. Whether that difference matters depends on what the dimension controls; it should not be decided silently during purchasing.
Keep original dimensions, converted values and chosen local products distinguishable. Ask the responsible designer to coordinate the final drawing set.
Check the labels around the numbers
Dimensions are not the only source of confusion. Product grades, performance ratings and descriptions may use different standards. Ask the supplier which specification is required and how local substitutions will be evaluated.
Your Home: designing a house provides context for coordinating design information. For an imported package, add a specific review of units, product availability and locally required documentation.
Before ordering, check a few critical interfaces together: overall base dimensions, openings and component connections. Record the approved revisions in one drawing set. Do not leave the carpenter, foundation contractor and window supplier each working from a different conversion spreadsheet.