Gingerbread House Material Calculator
Building gingerbread houses? Get the dough, royal-icing "glue" and candy amounts you need for one house or a whole batch.
How it works
dough, icing & candy = per-house amount × houses · egg whites = ⌈icing cups ÷ 1.6⌉ · powdered sugar = whites × 1.5 cups
A gingerbread house is really two recipes: a stiff, low-spread dough for the walls and roof, and royal icing that dries rock-hard to hold it all together. Royal icing is the true bottleneck — beginners always run out because it doubles as glue and as decoration piping. The candy figure is generous on purpose; leftover candy is a feature, not waste.
Worked example
One medium house: about 5 cups of flour for dough, 6 baked panels (four walls plus two roof pieces), 2.5 cups of royal icing (roughly 2 egg whites and 3 cups of powdered sugar) and a pound of assorted candy for decorating.
Frequently asked questions
Why so much royal icing?
Royal icing does double duty — structural "cement" at the seams and every decorative bead, snowdrift and icicle. Houses collapse far more often from too little icing (or icing that is too thin) than from weak dough.
Can I use a boxed kit instead?
Kits are convenient but the pre-baked walls are thin and the icing packet is stingy. If you build from scratch, use this calculator; if you buy a kit, still make a batch of royal icing on the side for repairs and extra decoration.
How firm should the dough be?
Stiffer and less sweet than eating gingerbread, so the panels hold their shape and don’t spread. Roll thick, bake fully dry, and let panels cool flat before assembling.
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This calculator is for educational purposes. Double-check important results before acting on them.