About ModelCalcs
ModelCalcs provides 86+ free calculators across 10 categories, built specifically for scale modellers, railway enthusiasts, RC builders, wargamers and diorama artists. Every tool is fast, accurate, and requires no signup or account.
Whether you need to convert a real-world measurement to 1:72 scale, calculate the correct paint thinning ratio for your airbrush, plan a model railway gradient, size an RC battery, or estimate the cost of your next wargaming army, ModelCalcs has a purpose-built calculator for the job.
10 Categories
- đ Scale Conversion â 10 calculators
- đ¨ Paint & Finishing â 10 calculators
- đŠī¸ Plastic Kits â 8 calculators
- đ Railway Modelling â 10 calculators
- đī¸ RC Models â 8 calculators
- đ Diorama â 8 calculators
- âī¸ Miniatures & Wargaming â 8 calculators
- đ¨ Scratch Building â 8 calculators
- đ ī¸ Tools & Equipment â 8 calculators
- đ Model Maths â 8 calculators
Our Commitment
- 1.Always free â no signup, no paywall, no limits.
- 2.Accurate formulas â based on established scale modelling principles and correct mathematics.
- 3.Works everywhere â phone, tablet, desktop. No app to install.
- 4.No tracking â we use minimal analytics. Your data stays on your device.