Scale Model API

Scale-model maths as an API, computed locally and deterministically — the real-to-model conversions a modeller, model-railroader, wargamer or diorama-builder works in. The convert endpoint scales a dimension either way at any scale, given as a ratio (1:35), a number (87.1) or a name (Z, N, TT, HO, OO, S, O, G, 1/72, 1/48, 1/35, 1/24, 1/64, 1/43, 1/18): real → model divides by the ratio, model → real multiplies, so a 1:35 tank 6 metres long becomes 171 mm and an HO (1:87.1) boxcar 12.2 metres long becomes 140 mm, with the answer in mm, cm, m, inches and feet. The identify endpoint finds the scale from a real measurement and the model of it — scale = real ÷ model — and names the nearest standard scale with how far off it is, so you know whether figures and accessories will match. The scales endpoint lists the common named scales and compares any two, telling you that a 1:35 model is about 2.06 times the size of the same subject at 1:72. Everything is computed locally and deterministically, so it is instant and private. Ideal for scale-modelling, model-railroad, wargaming, diecast, architecture and diorama app developers, conversion and shopping tools, and hobby software. Pure local computation — no key, no third-party service, instant. Length in mm/cm/m/in/ft. Live, nothing stored. 3 compute endpoints. For typographic modular scales use a different API.