Arknights Pull Calculator
Optimize your Headhunting strategy and predict your chances of getting 6-star Operators.
Total Possible Pulls
0
0%
50
0 / 300
6-Star Cumulative Probability Curve
Visualization of how your odds increase as you use your pulls.
| Resource | Quantity | Pull Value |
|---|
What is an Arknights Pull Calculator?
An arknights pull calculator is a specialized tool designed for players of the mobile game Arknights to manage their gacha resources. In Arknights, players use various currencies—primarily Orundum and Originite Prime—to perform “Headhunting” (pulls) for new characters. Since the game utilizes a sophisticated “pity system,” an arknights pull calculator is essential for determining whether you have enough resources to guarantee a specific operator.
Whether you are saving for a limited banner or trying to snipe a specific meta-unit, understanding your math is the difference between a successful recruitment and a wasted stash. This tool accounts for the 180:1 conversion of Originite Prime and the 600:1 cost of a single pull, while also factoring in your current pity count to provide realistic probability estimates.
Arknights Pull Calculator Formula and Mathematical Explanation
The core logic of the arknights pull calculator involves two main parts: asset conversion and probability calculation. The pity system in Arknights is generous but requires specific math to track accurately.
Step 1: Resource Conversion
Total Pulls = (Current Orundum / 600) + (Originite Prime * 180 / 600) + Single Permits + (Ten-roll Permits * 10)
Step 2: The Pity System Logic
Standard 6-star rate is 2%. If no 6-star is pulled within 50 attempts, the rate increases by 2% for every subsequent pull. For example, the 51st pull has a 4% chance, the 52nd has 6%, and so on, until it hits 100% on the 99th pull.
Variables Table
| Variable | Meaning | Unit | Range/Value |
|---|---|---|---|
| Orundum | Primary gacha currency | Quantity | 0 – ∞ |
| Originite Prime | Premium currency | Quantity | 1 OP = 180 Orundum |
| Permit | Headhunting ticket | Pulls | 1 or 10 |
| Pity Count | Pulls since last 6-star | Count | 0 – 98 |
Practical Examples (Real-World Use Cases)
Example 1: The F2P Saver
A player has 36,000 Orundum, 50 Originite Prime, and 5 Single Permits. They currently have a 10-pull pity built up.
– Orundum Pulls: 36,000 / 600 = 60 pulls.
– OP Pulls: (50 * 180) / 600 = 15 pulls.
– Total Pulls: 60 + 15 + 5 = 80 pulls.
Using the arknights pull calculator, the cumulative probability of getting at least one 6-star within 80 pulls (starting from 10 pity) is approximately 89.4%.
Example 2: The Limited Banner Spark
A player wants to “Spark” (exchange for a limited unit) which requires 300 pulls. They have 120,000 Orundum and 20 Ten-roll permits.
– Orundum Pulls: 200.
– Permit Pulls: 200.
– Total: 400 pulls. They have enough for the spark and 100 extra pulls for future banners.
How to Use This Arknights Pull Calculator
To get the most out of this arknights pull calculator, follow these steps:
- Enter Assets: Input your current counts for Orundum, Originite Prime, and Permits. The calculator will instantly sum these into a “Total Possible Pulls” figure.
- Set Current Pity: Check your in-game history. If you’ve done 30 pulls since your last 6-star, enter “30”. This significantly shifts the probability curve.
- Analyze the Chart: Look at the cumulative probability chart. The steeper the line becomes after 50 pulls, the more likely you are to hit your target.
- Spark Progress: If you are pulling on a Limited Banner (like Anniversary or Half-Anniversary), watch the Spark Progress item to see how close you are to the 300-pull guarantee.
Key Factors That Affect Arknights Pull Calculator Results
1. Currency Conversion: Using Originite Prime for pulls is generally discouraged for pure F2P players who prefer buying skins, but for reaching a pity target, it is your most flexible asset.
2. Soft Pity Mechanics: The jump from 2% to 4% at pull 51 is the most critical factor in the arknights pull calculator. Most players find their 6-star between pulls 55 and 65.
3. Banner Types: Limited banners do not share pity with standard banners. Ensure your “Current Pity” input matches the specific banner type you intend to pull on.
4. Future Income: This tool calculates current assets. Don’t forget to account for the ~1200 Orundum from weekly Annihilation and daily missions.
5. Certificates: Buying permits from the Distinctions Store can add up to 38 pulls per month, which can drastically change your success odds.
6. Luck Variance: While the math shows high probabilities (e.g., 95%), there is always a “statistical tail” where a player might not get a 6-star until pull 90+.
Frequently Asked Questions (FAQ)
Q: Does pity carry over between banners?
A: Yes, for standard “Headhunting” and “Standard Kernel” banners. However, Limited Banners have their own separate pity that does not carry over to any other banner type.
Q: Is it better to do single pulls or 10-rolls?
A: Mathematically, there is no difference in 6-star rates. However, single pulls allow you to stop immediately once you hit a 6-star, potentially saving resources.
Q: What is “Soft Pity” in Arknights?
A: Soft pity refers to the increased 6-star rate (starting at the 51st pull) calculated by our arknights pull calculator.
Q: How many pulls do I need to guarantee a limited operator?
A: To be 100% sure via the Spark system, you need 300 pulls. Probability-wise, you have a very high chance to get them much earlier.
Q: Should I use Originite Prime for pulls?
A: Only if you don’t care about skins or level-up packs. Skins are exclusive to OP, while Orundum is only for pulling.
Q: How accurate is the 6-star probability?
A: The arknights pull calculator uses the official rates provided by Hypergryph/Yostar. It is a statistical model based on the cumulative binomial distribution and pity scaling.
Q: Can I get two 6-stars in one ten-pull?
A: Yes, it is possible. Each pull within the ten-roll is calculated individually.
Q: What happens to my pity after I get a 6-star?
A: It resets immediately to 0, and the 2% base rate applies again.
Related Tools and Internal Resources
- Orundum Farming Guide – Learn how to maximize your weekly income.
- Arknights Pity Tracker – A tool to log your pull history manually.
- Arknights Limited Banner Schedule – See which operators are coming next.
- Gacha Probability Math – Deep dive into the statistics of mobile gaming.
- Originite Prime Value Analysis – Should you spend on skins or pulls?
- Arknights Headhunting Tips – Strategy for building a balanced roster.