BGSI Calculator
Your expert tool for calculating pet hatching odds in Bubble Gum Simulator Infinity.
Enter the denominator of the base hatch chance (e.g., for 1 in 1M, enter 1000000).
Enter your total luck percentage from pets, enchants, and other permanent boosts.
Select if you’re aiming for a special variant of the pet.
Visualizing Your Luck
| Source | Multiplier | Status |
|---|---|---|
| Base Pet Chance | 1 in 1,000,000 | – |
| Permanent Luck Boost | x1.0 | Inactive |
| Gamepasses | x1.0 | Inactive |
| Potions | x1.0 | Inactive |
| Hatch Type Modifier | x1.0 | Standard |
| Final Odds | 1 in 1,000,000 | |
What is a BGSI Calculator?
A BGSI calculator is a specialized tool designed for players of the Roblox game Bubble Gum Simulator Infinity. Its primary purpose is to calculate the precise odds of hatching rare, legendary, and secret pets from eggs. Given the game’s complex system of luck boosts from various sources like pets, potions, and gamepasses, a calculator is essential for any serious player aiming to acquire the rarest collectibles. This BGSI calculator simplifies the process by taking all relevant variables into account to output a clear “1 in X” chance, removing guesswork and helping you optimize your hatching strategy.
The BGSI Calculator Formula and Explanation
The core of this BGSI calculator revolves around a multiplication of a base chance by several luck-enhancing factors. The formula is designed to be comprehensive and reflect the game’s mechanics accurately.
The fundamental formula is:
Final Chance = Base Chance / (Permanent Luck * Gamepass Luck * Potion Luck * Hatch Type Modifier)
Where each variable represents:
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Base Chance | The default probability of hatching a specific pet. | Unitless (1 / X) | 1 / 1,000 to 1 / 100,000,000+ |
| Permanent Luck | Multiplier from your equipped pets, enchants, and mastery. | Multiplier (e.g., x1.5) | 1.0+ |
| Gamepass Luck | Cumulative multiplier from all owned luck-boosting gamepasses. | Multiplier (e.g., x1.25) | 1.0 – ~2.0 |
| Potion Luck | Temporary multiplier from an active lucky potion. | Multiplier (e.g., x2.0) | 1.0 or 2.0 |
| Hatch Type Modifier | The additional rarity factor for Shiny or Mythic variants. | Integer | 1, 200, or 1000 |
Practical Examples
Example 1: Standard Secret Pet Hatching
A player is trying to hatch a secret pet with a base chance of 1 in 2,000,000. They have a permanent luck boost of 50% (a 1.5x multiplier) and own the Ultra Lucky gamepass (1.5x).
- Inputs: Base Chance Denominator = 2,000,000, Luck Boost = 50%, Ultra Lucky Pass = Checked
- Calculation: Total Multiplier = 1.5 * 1.5 = 2.25. Final Denominator = 2,000,000 / 2.25 = 888,889.
- Result: The player’s final odds are approximately 1 in 888,889.
Example 2: Advanced Mythic Pet Hatching
An advanced player is hunting for a Mythic version of a legendary pet. The legendary has a base chance of 1 in 50,000. The player has a 200% luck boost (3.0x multiplier), all lucky gamepasses (1.15 * 1.25 * 1.5 = ~2.15x), and an active lucky potion (2.0x). They select the “Mythic” hatch type (1000x rarity).
- Inputs: Base Chance Denominator = 50,000, Luck Boost = 200%, All Passes = Checked, Potion = Checked, Type = Mythic
- Calculation: Luck Multiplier = 3.0 * 2.15 * 2.0 = 12.9. Base Denominator with Luck = 50,000 / 12.9 = ~3,876. Total Denominator with Mythic = 3,876 * 1000 = 3,876,000.
- Result: The player’s odds of hatching the Mythic legendary are approximately 1 in 3.88 million.
How to Use This BGSI Calculator
Using this powerful BGSI calculator is straightforward. Follow these steps to determine your hatching odds:
- Enter the Base Chance: Find the pet you’re targeting in the in-game index and enter its base chance denominator in the first field. For a “1 in 5M” chance, you would enter “5000000”.
- Add Your Permanent Luck: Sum up all luck boosts from your equipped pet team and enchants. Enter this total percentage in the “Total Luck Boost” field. For a 120% boost, enter “120”.
- Select Your Boosts: Check the boxes for any lucky gamepasses you own and if you have a lucky potion currently active.
- Choose a Hatch Type: If you are hunting for a standard pet, leave this as “Standard”. If you want the odds for a Shiny or Mythic variant, select the appropriate option from the dropdown. This significantly impacts the final odds.
- Calculate: Click the “Calculate Odds” button to see the results instantly. The calculator will display your final “1 in X” odds, your total luck multiplier, and other useful data.
Key Factors That Affect BGSI Hatching Odds
- Base Pet Rarity: This is the single most important factor. A pet with a 1 in 100,000 chance will always be easier to get than one with a 1 in 10,000,000 chance.
- Permanent Luck Percentage: The cumulative luck from your best pets and enchants is crucial for long-term hunting. Building a strong team is key.
- Gamepasses: Lucky gamepasses provide a substantial and permanent boost to your odds. They are a significant investment for serious collectors.
- Potions: A lucky potion provides a powerful, albeit temporary, x2 multiplier. Use them strategically when hatching from expensive or limited-time eggs.
- Shiny/Mythic Modifiers: Aiming for these ultra-rare variants makes the hunt much harder, as they add a large multiplier (200x for Shiny, 1000x for Mythic) to the final rarity.
- Event Boosts: Some in-game events provide global or personal luck boosts. Our BGSI calculator lets you factor these in by adjusting the ‘Total Luck Boost’ percentage.
Frequently Asked Questions (FAQ)
Is this BGSI calculator 100% accurate?
This calculator uses the community-understood formulas for how luck works in Bubble Gum Simulator Infinity. It is highly accurate for strategic planning. However, game developers can alter formulas in updates, so slight discrepancies are always possible.
What does “Hatches for 50% Success” mean?
This is a statistical measure indicating the number of hatches required to have a 50% probability of obtaining the pet at least once. It’s a way to understand the scale of the grind, but it’s not a guarantee. You could get it on your first try or well after this number.
Does the egg type matter?
The egg itself doesn’t have a luck multiplier. What matters is the base chance of the specific pet you want *from that egg*. A pet might have different base chances in different eggs.
Why are my odds still so low with high luck?
Secret pets in BGSI have extremely high base rarity. Even with a massive 10x or 20x luck multiplier, a 1 in 20 million base chance still results in a 1 in 1-2 million final chance. Luck helps, but the grind for top pets remains significant.
How do I calculate my permanent luck boost?
You must manually add the luck percentages shown on each of your equipped pets. Also, add any luck bonuses from enchants or other permanent sources listed in your character’s stats.
Should I use a lucky potion for common pets?
Generally, no. Lucky potions are a rare resource. It’s most efficient to save them for when you are hatching very expensive or limited-time eggs for the rarest secret pets.
Can I enter my luck as a multiplier instead of a percentage?
This BGSI calculator is designed for percentage input as it’s more user-friendly. A 150% boost is equivalent to a 2.5x multiplier (1 + 1.50). You can do the conversion yourself if needed.
Where can I find more tools for BGSI?
Our website offers various resources. Check out our Related Tools section below for internal links to trade value lists and other useful guides.