ArchMM
iPhoneArchitectural scale, without the guesswork.
ArchMM connects the dimensions on a drawing to the measurements on your model-making bench. Convert full-size feet and inches into model millimeters, or work backward from a model measurement. Choose the architectural scale you need and check a converted length against a printer-bed preset before preparing a physical print.
Inside ArchMM
Move between the drawing and the model.
Begin with the scale on the drawing and the dimension you know. Use the conversion and calculator workspaces to move between full-size measurements and model dimensions, then check the next fabrication decision before committing material.

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Connect the drawing to the model.
Convert full-size feet and inches into model millimeters at your chosen architectural scale. A ten-foot dimension at 1/4″ = 1′–0″ becomes 63.5 mm. Check the converted length against a printer-bed preset before preparing the model for fabrication.

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Calculate in feet and inches.
Add, subtract, multiply, and divide measurements in feet, inches, and fractions. Adding 8′–6″ and 3′–9″ gives 12′–3″, with equivalent inch and decimal-foot readings available alongside the result.

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Keep the model measurement in inches.
Keep model measurements in inches when that is what the drawing or fabrication process needs. A six-foot dimension at quarter-inch scale becomes 1.5 inches, with the selected scale visible beside the calculation.

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Work out the lumber volume.
Calculate lumber volume from board thickness, width, length, and quantity. One board measuring 1 inch × 6 inches × 8 feet contains 4 board feet. The result uses the dimensions entered; add waste and pricing separately when preparing an order.
In practice
Built for the model-making bench.
Choose the drawing’s scale
Work at full size or choose common architectural scales through 1/16″ = 1′–0″. Keep the selected scale explicit so the dimension you are reading is tied to the drawing you are using.
Convert in either direction
Start with full-size feet and inches to find a model dimension in millimeters, or work backward from a measured model part. Use the scale-inches workspace when the model measurement needs to stay in inches.
Calculate in feet and fractions
The Carpenter workspace keeps feet, inches, and fractions in the calculation. Work in familiar construction units instead of manually translating every measurement into a decimal before continuing.
Check a printer-bed dimension
Compare the converted length with presets for common Prusa, Bambu Lab, Creality, Ender, and Anycubic beds. This supports an early fabrication decision; confirm the model’s orientation and clearances in the slicer before printing.
Keep working offline
No separate account or network connection is needed for the iPhone workflow. The selected scale and printer stay on the device, ready for the next measurement at the bench.
Frequently asked questions.
Which architectural scales are supported?
ArchMM supports full size and common architectural scales through 1/16″ = 1′–0″, converting in either direction between full-size dimensions and model millimeters.
Can I check whether a model fits my printer?
Included presets cover common Prusa, Bambu Lab, Creality, Ender, and Anycubic beds. Always confirm orientation and clearances in the slicer before printing.
Does ArchMM work offline?
ArchMM works without an account or network connection and keeps the selected scale and printer on the iPhone.
ArchMM / iPhone