Forge Craft Planner Unofficial fan calculator

Unofficial fan tool

The Forge Calculator

Plan weapon and armor crafts with source-checked ore multipliers, trait threshold labels, and transparent data notes. Start with a beginner preset or enter the ores you have.

Rules/data version May 2026 Reviewed after major updates No login ยท local calculations

Ore icons are fan-made visual cues, not official item art.

Stone0.20x
CommonStonewake's CrossNo listed traitSource checked
Sand Stone0.25x
CommonStonewake's CrossNo listed traitSource checked
Copper0.30x
CommonStonewake's CrossNo listed traitSource checked
Iron0.35x
CommonStonewake's CrossNo listed traitSource checked
Tin0.42x
UncommonStonewake's CrossNo listed traitSource checked
Silver0.50x
UncommonStonewake's CrossNo listed traitSource checked
Gold0.65x
UncommonStonewake's CrossNo listed traitSource checked
Mushroomite0.80x
RareStonewake's CrossNo listed traitSource checked
Platinum0.80x
RareStonewake's CrossNo listed traitSource checked
Bananite0.85x
UncommonStonewake's CrossNo listed traitSource checked
Cardboardite0.70x
CommonStonewake's CrossNo listed traitSource checked
Aite1.00x
EpicStonewake's CrossNo listed traitSource checked
Poopite1.20x
EpicStonewake's CrossPoisonSource checked
Fichillium0.00x
RelicStonewake's CrossNo listed traitSource checked
Cobalt1.00x
UncommonForgotten KingdomNo listed traitSource checked
Titanium1.15x
UncommonForgotten KingdomNo listed traitSource checked
Lapis Lazuli1.30x
UncommonForgotten KingdomNo listed traitSource checked
Volcanic Rock1.55x
RareForgotten KingdomNo listed traitSource checked
Quartz1.50x
RareForgotten KingdomNo listed traitSource checked
Amethyst1.65x
RareForgotten KingdomNo listed traitSource checked
Topaz1.75x
RareForgotten KingdomNo listed traitSource checked
Diamond2.00x
RareForgotten KingdomNo listed traitSource checked
Sapphire2.25x
RareForgotten KingdomNo listed traitSource checked
Cuprite2.43x
EpicForgotten KingdomNo listed traitSource checked
Obsidian2.35x
EpicForgotten KingdomArmor DefenseSource checked
Emerald2.55x
EpicForgotten KingdomNo listed traitSource checked
Ruby2.95x
EpicForgotten KingdomNo listed traitSource checked
Rivalite3.33x
EpicForgotten KingdomCritical ChanceSource checked
Uranium3.00x
LegendaryForgotten KingdomLow-HP BlastSource checked
Mythril3.50x
LegendaryForgotten KingdomArmor DefenseSource checked
Eye Ore4.00x
LegendaryForgotten KingdomRisk DamageSource checked
Fireite4.50x
LegendaryForgotten KingdomBurnSource checked
Magmaite5.00x
LegendaryForgotten KingdomExplosionSource checked
Lightite4.60x
LegendaryForgotten KingdomMovement SpeedSource checked
Demonite5.50x
MythicalForgotten KingdomDamage Taken BurnSource checked
Darkryte6.30x
MythicalForgotten KingdomDodgeSource checked
Magenta Crystal Ore3.10x
EpicGoblin CaveNo listed traitSource checked
Crimson Crystal Ore3.30x
EpicGoblin CaveNo listed traitSource checked
Green Crystal Ore3.20x
EpicGoblin CaveNo listed traitSource checked
Orange Crystal Ore3.00x
EpicGoblin CaveNo listed traitSource checked
Blue Crystal Ore3.40x
EpicGoblin CaveNo listed traitSource checked
Rainbow Crystal Ore5.25x
LegendaryGoblin CaveNo listed traitSource checked
Arcane Crystal Ore7.50x
EpicGoblin CaveNo listed traitSource checked
Galaxite11.50x
DivineExclusive OresNo listed traitSource checked

How the planner reads a craft

The calculator keeps the formula visible: selected ores become a weighted multiplier, the largest material share becomes the main material, and trait progress is shown against the public 10% and 30% thresholds.

Average multiplier

Each ore contributes its multiplier times quantity. The total is divided by all selected ores.

Craft band

Weapon and armor outputs are grouped into planning bands until exact probability tables are checked again.

Trait thresholds

Trait shares show whether a material identity is below 10%, active at 10%, near 30%, or active at 30%.

Use the focused pages when you want a narrower view of the same local rules and ore table.

Weapon Calculator

Open the same calculator in weapon mode with short notes for craft-tier planning.

Plan weapons

Armor Calculator

Start in armor mode and watch material identity and trait thresholds while testing mixes.

Plan armor

Inventory Optimizer

Enter the ores you have and get a few local-only craft suggestions with confidence labels.

Open optimizer

Ore Multipliers

Scan the current local ore table by rarity, area, multiplier, traits, and data status.

View ores

Methodology

Read exactly how the calculator handles formulas, estimates, and update uncertainty.

Read methodology