Convert complete miniature projects into metric, imperial, ruler fractions, and 3D-printer percentages.
Open the converter →Mode: Real size to model size · Target scale 1:48 · Ruler precision 1/32 inch
Load a complete practice worksheet, then replace any illustrative value with your own.
Practice a real-size-to-model-size 1:12 worksheet with inch-based room, opening, and furniture inputs.
Illustrative values for practicing the site's 1:12 conversion workflow; not building or furniture standards.
Illustrative learning values only. These are not building or furniture standards.
Editable example — not a standard or compatibility guarantee.
Practice a real-size-to-model-size 1:87.1 worksheet with foot-based structure and opening inputs.
Illustrative values for practicing the site's North America 1:87.1 ratio workflow; not railroad clearance or equipment data.
Illustrative structure values only. They do not guarantee track clearance, loading gauge, rolling-stock, or manufacturer compatibility.
Editable example — not a standard or compatibility guarantee.
Practice a scale-to-scale 1:72 to 1:48 worksheet with millimetre-based diorama part inputs.
Illustrative values for practicing the site's scale-to-scale formula and 150% slicer result.
Illustrative part values only. They do not guarantee kit, STL, wall-thickness, printer-tolerance, or assembly compatibility.
Editable example — not a standard or compatibility guarantee.
Target sizeX — mmY — mmZ — mm
Checking device storage…
See how one real-world measurement changes across a checked set of scale examples before choosing a project ratio.
Model size = real-world size ÷ scale denominator
Examples, not universal standards. Check the ratio stated by your kit, plan, or manufacturer.
Examples used for dollhouse and artisan miniature projects. Ratio labels are shown first.
North American standard-scale examples based on NMRA references. Letter names and ratios can differ by region and system.
Examples found across current plastic model kit ranges. The set is not exhaustive and no ratio is exclusive to one subject.
Choose a preset and enter a real-world size to compare scales.
Compare one known real-world dimension with the same measurement on the model. We convert both units before calculating the 1:N ratio.
Your calculated 1:N ratio will appear here.
Start from real dimensions, a model, or another scale.
Keep a complete project in one worksheet.
Use metric, decimal inches, or ruler fractions.
Checked formulas, practical examples, and workshop notes for complete miniature projects.
Calculate a missing 1:N ratio from one verified real-world dimension, then check it against a second measurement.
Read guide →DOLLHOUSE WORKSHOPConvert tables, doors, bookcases, and room parts into one printable cutting worksheet.
Read guide →MODEL RAILROADSResize structures and scenery while accounting for regional differences in named scale ratios.
Read guide →