🔥 REFINED FIRE CRYSTAL PLANNER
RFC Optimizer
Find the cheapest refinement schedule that gives you at least a 95% chance of reaching your RFC target — then combine it with the pure Fire Crystals required for your building operation.
Set your target
Enter your RFC target and duration manually, or load one of the Building Tool presets.
RFC
weeks
Not sure how many RFCs your upgrades need?
Use the Building Tool for a custom plan, or load a ready-made upgrade preset here.
Open Building Tool ↗
The recommended plan is only shown when the selected duration can reach your target
with at least 95% modeled probability.