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RENEWAL & PRE-RENEWAL · CRAFTING
Metal & stone refining calculator
Turn ore and fragments into Iron, Steel, elemental stones and Star Crumbs. Calculate success chances and materials for Ragnarok Online.
Recipes 7
Steel
Per try
AVERAGE SUCCESS CHANCE89.85%84.90% minimum - 94.80% maximum
Expected output89.85from 100 attempts
Expected failures 10.15At least one success 100.00%
An average is an estimate, not a guaranteed outcome.
Effective DEX 99 · LUK 99
Materials for your batch
| Material | Per try | Total | Unit price (Zeny) |
|---|---|---|---|
 Iron | 5 | 500 | |
 Coal | 1 | 100 | |
 Mini Furnace | 1 | 100 |
Add unit prices to estimate your material cost.
Have in your inventory · not consumed
No reusable item required.
Compare products
Your current stats| Product | Min. | Average | Max. |
|---|---|---|---|
| Flame Heart | 64.90% | 69.85% | 74.80% |
| Great Nature | 64.90% | 69.85% | 74.80% |
| Iron | 94.90% | 98.67% | 100.00% |
| Mystic Frozen | 64.90% | 69.85% | 74.80% |
| Rough Wind | 64.90% | 69.85% | 74.80% |
| Star Crumb | 100.00% | 100.00% | 100.00% |
| Steel | 84.90% | 89.85% | 94.80% |
How this calculator works
Refining here means producing metals and elemental stones from raw materials. Job level, DEX, LUK and the corresponding refining skill affect success. Iron has a 40-point base bonus, Steel 30, and elemental stones 10; each skill level adds 5 points. Attempts also receive a random 0.1–10 point bonus. Star Crumbs succeed at 100% once the skill requirement is met.
Each attempt consumes one Mini Furnace in addition to the recipe ingredients. Weapon production rates and the Baby job penalty do not apply to these recipes.