Scale-Model Calculators & Tools
Free, practical tools for the workbench and the shelf — convert a scale, plan a display case, mix paint by ratio, grade a model's condition, dilute a weathering wash, and check a shelf's load capacity.
Scale Converter
Convert between a model's scale ratio (1:12 through 1:350) and real millimetre measurements in either direction, with cm, inches, metres, and feet included
Display Case Size Planner
Work out how many models fit on a shelf or in a case, and how many shelves your whole collection needs, from the case size and one model's footprint
Paint Mix Ratio Calculator
Split a 2- or 3-color mixing ratio into exact volumes for a target total, so a custom color match comes out the same every time you mix a fresh batch
Condition Grade Guide
Rate paint, chips, moving parts, decals, and completeness to get a standard collector condition grade from Mint to Poor — physical condition only, never a valuation
Weathering Wash Ratio Calculator
Turn a pin-wash dilution ratio into millilitres or dropper counts for a target volume, so panel-line washes come out consistent from one model to the next
Shelf Load & Weight Calculator
Check a shelf's rated capacity against your collection's combined weight, with a built-in safety margin and how many more models it can safely hold