Reroll Calculator
Calculate the probability and cost of getting your desired race in The Forge. Optimize your reroll strategy with confidence, then switch back to The Forge Calculator to simulate full forging outcomes with your best rolls.
Target Race
Select a race to calculate reroll probabilities.
Select at least one race to calculate probability
The Forge Reroll Calculator is an essential tool for any player looking to optimize their race reroll strategy in The Forge Roblox game. With varying race probabilities ranging from 25% (Human) to just 0.5% (Demon/Angel), understanding the true cost and likelihood of obtaining your desired race is crucial before spending Robux. Our calculator uses proven mathematical formulas based on geometric distribution to give you accurate predictions.
Features of The Reroll Calculator
Accurate Probability Calculations
Get precise probability calculations based on geometric distribution. Know exactly how many rerolls you need for 50%, 90%, or 99% confidence of success.
Robux Cost Estimation
Instantly calculate the Robux cost for your target race. Each pack of 10 rerolls costs 575 Robux, and our calculator helps you budget effectively.
Pack Success Rate
See your chances of getting at least one target race per 10-reroll pack. This helps you understand the value of each purchase.
Visual Race Cards
Browse all races with intuitive cards showing rarity tiers, emojis, and exact spawn probabilities. Easily identify common, uncommon, rare, epic, mythic, and exotic races.
Real-time Updates
Watch statistics update instantly as you select different races. Compare reroll costs across different race targets without any delay.
Mathematical Transparency
Understand exactly how calculations work with our formula explainer section. Learn about geometric distribution and probability theory.
How to Use The Reroll Calculator
Select Your Target Race
Browse the race selection panel and click on the race you want to obtain. Each card displays the race name, rarity tier, and spawn probability. Exotic races like Demon and Angel have 0.5% chance, while common races like Human have 25%.
Enter Your Reroll Count
Input the number of rerolls you're planning to use in the calculator. The success probability will update in real-time, showing you exactly what your chances are.
Review Statistics & Costs
Check the Statistics panel for comprehensive data including average rerolls needed, confidence levels at 50%, 90%, and 99%, along with corresponding Robux costs for each milestone.
Plan Your Budget
Use the calculated costs to decide how much Robux you're willing to spend. Remember that even with 99% confidence, there's still a 1% chance of not getting your target race.
The Forge Race Tiers Explained
Demon and Angel are the rarest races with only 0.5% spawn rate each. Expect to need around 460 rerolls on average for 90% confidence.
Minotaur, Dragonborn, and Golem fall into this tier. These powerful races require significant investment but are more attainable than Exotic.
Dwarf and Shadow offer a balance of rarity and accessibility. Typically obtainable within 30-40 rerolls at 90% confidence.
Goblin, Undead, and Orc provide solid options without extreme Robux investment. Most players can obtain these within a few packs.
Elf and Zombie are common alternatives to Human with slightly lower spawn rates but still highly accessible.
Human is the default race with the highest spawn rate. You'll likely encounter this race frequently during your rerolls.