Building / Furnace calculator
Furnace, 3 camps, Infirmary, Research Center, and Embassy upgrade costs from community tables (whiteoutdata). Confirm the in-game upgrade preview before spending speedups.
schema v4 · 2026-07-16 · dữ liệu mẫu — hãy đối chiếu in-game · community-wiki
Enter total construction speed % (VIP + research + heroes + alliance). Time is divided by (1 + bonus/100).
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