Set your current and target level for each Furnace City building. The calculator totals up all the resources you'll need to get from where you are to your goal.

Yes — Zinman's skill reduces building upgrade costs, so a higher skill level means fewer resources spent on every upgrade. If you plan to do a lot of building, maxing Zinman first can save you a significant amount of materials overall.

Valeria increases the SvS Points you gain from upgrading buildings. Set your Valeria level so the calculator can show accurate SvS Point totals alongside your resource costs.

Yes! You can toggle individual buildings on or off to only include the ones you want to upgrade.

FC buildings primarily use Ore, Bricks, Lumber, and similar materials. The exact amounts depend on which building and what level you're upgrading to.

Yes! Your building levels are automatically saved in your browser.