1/144 means the model is one 144th the size of the machine it depicts — an 18-meter mecha becomes a 12.5 cm kit that fits in your palm and on any shelf. It is the mainstream Gunpla scale: the biggest catalog, the lowest prices, and the fastest builds.
For comparison, 1/100 doubles the volume (18 cm tall) and 1/60 is the flagship display scale (30 cm). Kit culture writes scale with a slash — 1/144 — while diecast collecting tends to use 1:144.
Go deeper in our kits & grades guides.