Divide your height by the character's canonical height to get a scale factor, then multiply every prop dimension by that factor. For example, if Cloud Strife is 173 cm and you're 165 cm, your scale factor is 0.954. His 152 cm Buster Sword becomes 145 cm for you. The calculator above does this math instantly for 14 weapon presets.

It depends on the character and your height. Most one-handed swords scale to 55–70 cm blade length for average-height cosplayers. Greatswords and oversized weapons can be 100–150 cm. Use proportional scaling to keep the weapon looking right relative to your body rather than copying the canonical measurement exactly.

Most conventions allow props up to 6 feet (183 cm). All props must be peace-bonded so they can't be drawn or swung freely. Some cons have stricter limits for crowded events or indoor panels. Always check your specific convention's prop policy before building — oversized weapons like the Dragon Slayer may need special approval.

Check official source material first: game guides, art books, and character profile pages. Community wikis (Final Fantasy Wiki, Zelda Wiki, MyAnimeList) list heights for most major characters. For obscure characters, estimate from reference art using known objects — standard doorframes are about 200 cm, and chairs are around 45 cm seat height.

EVA foam is the go-to for props over 100 cm — it's lightweight, easy to shape, and convention-safe. Use PVC pipe or wooden dowels as internal structure for rigidity. For smaller props, Worbla, foam board, or 3D-printed segments work well. Avoid solid wood or metal — they're too heavy for all-day carry and most conventions won't allow them.

Aim for under 2 kg (4.4 lbs) for one-handed props and under 4 kg (8.8 lbs) for two-handed. You'll carry it all day at a convention — lighter is always better. An EVA foam Buster Sword typically weighs 1.5–2.5 kg even at full size. Only add counterweights if the prop is too unbalanced to hold comfortably.

Scale length proportionally, but width and thickness can stay closer to 1:1. A blade that's too thin may be structurally weak, and a handle that's too narrow won't be comfortable to grip. The calculator gives you proportional dimensions as a starting point — then adjust grip diameter and structural widths for ergonomics.

Yes. Enter the character's height and the armor piece's dimension — shoulder width, chest plate height, pauldron length, whatever you need. The same proportional scaling applies. For fitted armor, also take your own body measurements and compare to the character's proportions, since armor hugs the body differently than weapons.