Model Maths Calculators
Planning and budgeting calculators — material costs, build time, collection value, display cases, shipping and competition scoring.
Project Cost Calculator
Estimate total project cost including kit, paints, tools and aftermarket parts.
Build Time Calculator
Estimate total build hours based on complexity, experience and sessions per week.
Collection Value Calculator
Track and estimate the value of your model collection for insurance or sale.
Display Case Calculator
Calculate display case dimensions and shelf spacing for your collection.
Shipping Calculator
Estimate box size, packing materials and weight for shipping models safely.
Competition Score Calculator
Score your model against common IPMS-style competition judging criteria.
Photo Setup Calculator
Calculate backdrop size, camera distance and lighting angles for model photography.
Budget Calculator
Plan your annual hobby budget across kits, paints, tools and events.
8 free calculators in Model Maths
The Business Side of Model Making
Model making is a rewarding hobby, but it helps to plan the practical aspects — budgeting for supplies, estimating build time, displaying finished models, and even entering competitions. These calculators cover the planning and logistics side of the hobby.
A realistic hobby budget accounts for kits, paints, tools, aftermarket parts and storage. Many modellers underestimate the cost of consumables like sandpaper, masking tape and thinners. Our budget calculator helps you plan annual spending across all categories so there are no surprises.
If you enter competitions or sell models, photography is essential. Good model photos need a clean backdrop, even lighting from at least two angles, and the right camera distance to avoid perspective distortion. Our photo setup calculator helps you work out the dimensions and distances for professional-looking results.