
ArchMM
Architectural Scale Converter
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Free
About
Architectural scale, without the guesswork.
ArchMM is a focused iPhone utility for scenic designers, model makers, architects, students, and anyone moving between real-world dimensions and physical scale models.
Choose a conversion direction, enter the measurement you already know, select the drawing scale, and get a result ready to use in your drafting, model-making, or 3D-printing workflow.
FEATURES
• Convert full-size feet and inches to model millimeters
• Reverse model millimeters to full-size feet and inches
• Work at 1:1 or use standard architectural scales from 1″ through 1/16″
• Compare converted lengths with common 3D-printer bed dimensions
• Copy results with one tap
• Keep your selected scale and printer ready for the next calculation
• Work offline with no account, advertising, analytics, or tracking
ArchMM keeps the calculation close, clear, and out of the way—so you can return to the drawing, model, or printer setup in front of you.
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What's New in ArchMM
1.0.1
August 13, 2026
Entering dimensions is now faster: tapping a field that contains zero clears it automatically, so you can type the new measurement immediately. This update also improves decimal input and removes unwanted leading zeroes.
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