The Forge Crafting Calculator
This Forge Crafting Calculator helps you predict what you can craft in Roblox The Forge before you actually forge it. Select your ores to see the most likely weapons or armor, the final multiplier, and any traits that will transfer. Results are probability based and meant to help you plan better crafts.
Forge chances
3 ores in mix
Dagger
Min 3 ores · optimal 3
Straight Sword
Min 4 ores · optimal 8
Gauntlet
Min 7 ores · optimal 11
Katana
Min 9 ores · optimal 15
Great Sword
Min 12 ores · optimal 20
Great Axe
Min 16 ores · optimal 37
Colossal Sword
Min 21 ores · optimal 46
Probabilities use the guide min/optimal thresholds and 1/x weights; real Forge RNG may differ.
Composition
Total multiplier: 2.17x
Weighted average of ore multipliers. Traits activate at 10 percent share; optimal at 30 percent.

66.7%
Sapphire

33.3%
Diamond
Active traits
No traits active. Add at least 10 percent of a trait ore to enable one.
Ores & traits
Select up to four ore types. Click to add; adjust counts below.
Common
Uncommon
Rare
Epic
Legendary
Mythical
Divine
Detailed weapon chances
Probabilities update as you change ore counts.
Dagger
Dagger
4.3
Base DMG
0.35s
Speed
6
Range
Forged damage
9.32 (base 4.3 × 2.17)
Falchion Knife
Dagger
4.3
Base DMG
0.35s
Speed
6
Range
Forged damage
9.32 (base 4.3 × 2.17)
Gladius Dagger
Dagger
4.3
Base DMG
0.32s
Speed
6
Range
Forged damage
9.32 (base 4.3 × 2.17)
Hook
Dagger
4.3
Base DMG
0.35s
Speed
6
Range
Forged damage
9.32 (base 4.3 × 2.17)
Chaos
Straight Sword
9.38
Base DMG
0.59s
Speed
8
Range
Forged damage
20.31 (base 9.375 × 2.17)
Cutlass
Straight Sword
9.38
Base DMG
0.66s
Speed
8
Range
Forged damage
20.31 (base 9.375 × 2.17)
Falchion Sword
Straight Sword
7.5
Base DMG
0.59s
Speed
8
Range
Forged damage
16.25 (base 7.5 × 2.17)
Gladius Sword
Straight Sword
7.88
Base DMG
0.62s
Speed
8
Range
Forged damage
17.06 (base 7.875 × 2.17)
Rapier
Straight Sword
7.5
Base DMG
0.49s
Speed
8
Range
Forged damage
16.25 (base 7.5 × 2.17)
Boxing Gloves
Gauntlet
8
Base DMG
0.59s
Speed
6
Range
Forged damage
17.33 (base 8 × 2.17)
Ironhand
Gauntlet
7.6
Base DMG
0.51s
Speed
6
Range
Forged damage
16.47 (base 7.6 × 2.17)
Relevator
Gauntlet
9.6
Base DMG
0.69s
Speed
6
Range
Forged damage
20.8 (base 9.6 × 2.17)
Tachi
Katana
8.93
Base DMG
0.63s
Speed
9
Range
Forged damage
19.34 (base 8.925 × 2.17)
Uchigatana
Katana
8.5
Base DMG
0.6s
Speed
9
Range
Forged damage
18.42 (base 8.5 × 2.17)
Crusaders Sword
Great Sword
12
Base DMG
1s
Speed
9
Range
Forged damage
26 (base 12 × 2.17)
Long Sword
Great Sword
12
Base DMG
1.1s
Speed
9
Range
Forged damage
26 (base 12 × 2.17)
Double Battle Axe
Great Axe
15.75
Base DMG
1.05s
Speed
9
Range
Forged damage
34.13 (base 15.75 × 2.17)
Scythe
Great Axe
14.25
Base DMG
0.95s
Speed
9
Range
Forged damage
30.87 (base 14.25 × 2.17)
Comically Large Spoon
Colossal Sword
18
Base DMG
1.2s
Speed
10
Range
Forged damage
39 (base 18 × 2.17)
Dragon Slayer
Colossal Sword
22
Base DMG
1.12s
Speed
10
Range
Forged damage
47.67 (base 22 × 2.17)
Great Sword
Colossal Sword
20
Base DMG
1.12s
Speed
10
Range
Forged damage
43.33 (base 20 × 2.17)
Hammer
Colossal Sword
22
Base DMG
1.24s
Speed
10
Range
Forged damage
47.67 (base 22 × 2.17)
Skull Crusher
Colossal Sword
24
Base DMG
1.4s
Speed
10
Range
Forged damage
52 (base 24 × 2.17)
How This Forge Crafting Calculator Works
This tool doesn’t guess or promise a guaranteed result. It simply follows the same rules The Forge uses and shows you the most likely outcomes based on the ores you choose.
1. You select the ores
First, pick at least 3 ores. You can choose up to 4 different ore types, and you can add as many pieces of each as you want.
The total number of ores you use is very important. It decides what kind of weapon or armor the forge can roll, not how strong it is.
2. Total ore count decides what you can craft
The Forge does not look at ore type to decide weapon or armor size. It only looks at how many total ores you put in.
- Fewer ores → smaller weapons like Daggers or Straight Swords
- More ores → larger weapons like Katanas, Great Swords, or Colossal weapons
- In Armor mode, higher ore counts shift chances from Light to Medium and Heavy armor
Our calculator uses the same known crafting thresholds and turns them into probability ranges, not guarantees.
3. Weapon and armor chances are probabilities
When you forge in the real game, the result is random.
Instead of showing one result, this tool shows:
- Which weapon or armor classes are possible
- How likely each class is
- Which specific items exist inside each class and their relative chances
This is why you’ll see percentages instead of a single result.
4. Multiplier decides how strong the item is
Ore quality affects strength, not item type.
Each ore has a multiplier value.
The final multiplier is the average of all ore multipliers you selected.
Formula used:
Final Multiplier =
(sum of each ore multiplier × its quantity) ÷ (total ore count)
This multiplier scales the base stats of the weapon or armor you roll.
5. Traits come from ore composition
Some ores have special traits like burn, explosion, extra defense, or movement speed.
Traits activate based on percentage of that ore in your mix:
- Less than 10% → trait does not activate
- 10% or more → trait activates and transfers to the item
If multiple trait ores reach this threshold, all of them activate together.
The calculator simply shows which traits will apply. It does not simulate combat damage or skill effects.
6. Weapons and armor are rolled in two steps
The Forge rolls results in layers:
- It rolls the item class (weapon type or armor weight) based on total ores
- It rolls the specific item inside that class using fixed chance weights
This tool shows both steps clearly so you can understand where your odds come from.
7. This is a planning tool, not a guarantee
The Forge uses hidden RNG. There is no public official formula.
This calculator uses known crafting rules and community-tested data to give you realistic estimates, so you can plan smarter before spending rare ores.
Results may differ slightly from the game, but the logic stays true to how forging actually works.
FAQ
Is this Forge Crafting Calculator 100% accurate?
No. The Forge uses hidden RNG and does not publish exact crafting formulas. This tool shows probability-based estimates using known crafting rules and community-tested data.
Why do my results look different from other Forge calculators?
There is no official crafting formula. Different calculators use slightly different assumptions or models, which is why results can vary a bit.
Does ore type decide which weapon or armor I get?
No. Ore type does not decide the weapon or armor class. Only the total number of ores affects what type of item the forge can roll.
What does the multiplier actually do?
The multiplier scales the final stats of the item, such as weapon damage or armor health. It does not affect which weapon or armor you roll.
How is the final multiplier calculated?
It is the average of all ore multipliers used. The formula is: (sum of ore multiplier × quantity) ÷ total ore count.
How do traits activate in this calculator?
A trait activates when its ore makes up at least 10% of the total ore mix. Multiple traits can activate at the same time if they meet this threshold.
Can I guarantee a specific weapon or armor using this tool?
No. The forge is random. This calculator only shows what is most likely, not guaranteed outcomes.
Why do some weapons or armor pieces show very low chances?
Some items are intentionally rare in the game. Even if a class has a high chance, certain items inside that class can still be rare.
Does adding more ores always make the result better?
Not always. More ores unlock larger weapons or heavier armor, but they can also reduce the chance of smaller items you might want.
Does this calculator account for Island 1 or Island 2 requirements?
No. The tool focuses only on crafting probabilities. Some armor variants may require later game progression, but that is not simulated here.
Why can I only select up to four ore types?
This limit keeps the calculator simple and reflects how most players actually mix ores when forging items in The Forge.
Is this tool affiliated with the developers of The Forge?
No. This is an independent fan-made calculator built to help players plan their crafts more effectively.

