Spin Probability Calculator
Calculate your chances of pulling specific clans from spins. See probabilities and how many spins you need for 50%, 90%, and 99% success rates.
Tip: redeem FREECLANSPINSYES for 1,000 spins before rolling.
Drag the slider for quick changes.
Use the 90% spin count as your stop line.
The in-game pity for Grade 1+ makes your real odds slightly higher than pure math.
How to Use the Spin Probability Calculator
Step 1: Pick a Target Clan
Select the clan you want to calculate the probability for. Different clans have different drop rates, ranging from rare Special Grade clans like Sukuna (1%) to more common Grade 1 clans.
Step 2: Enter Number of Spins
Type or use the slider to enter how many spins you plan to use. The calculator will instantly show your probability of getting the target clan with that many spins.
Step 3: Review Probability Results
The calculator shows your chance of pulling the target clan, expected number of pulls on average, and how many spins you need for 50%, 90%, and 99% success rates. Use the 90% spin count as your stop line when deciding how many spins to use.
Step 4: Plan Your Spins
Before rolling, redeem codes like FREECLANSPINSYES for bonus spins. Plan your spin strategy based on the probability calculations to maximize your chances of getting your desired clan.
Understanding Clan Drop Rates
Special Grade (???) - 1%
Ultra-rare clans like Sukuna and Tengen have only a 1% drop rate. These require the most spins to guarantee, with 90% probability needing around 229 spins.
Grade S - 5%
High-tier clans like Gojo, Zen'in, and Geto have a 5% drop rate. More achievable than Special Grade, but still require planning and luck.
Grade A - 14%
Clans like Fushiguro, Okkotsu, Kamo, and Abe have a 14% drop rate. These are more common and easier to obtain with fewer spins.
Pity System
The in-game pity system for Grade 1+ clans makes your actual odds slightly higher than pure mathematical probability. Always check for active codes before spinning!