arknights calculator

How this Arknights calculator helps you plan smarter

Resource planning in Arknights is really about reducing regret. Banners come fast, limited banners create pressure, and it is easy to spend without a clear target. This calculator gives you two things quickly: how many pulls you can realistically reach and your probability of pulling a specific operator.

Instead of guessing, you can test scenarios in seconds: “What if I save for 45 more days?”, “What if an event gives another 3,000 Orundum?”, or “Do I have enough to aim for spark?”

What the calculator is actually computing

1) Pull income projection

The planner adds together:

• Your current Orundum
• Projected daily income across remaining days
• Weekly Annihilation gains based on full weeks left
• Any one-time event income you expect
• Originite Prime converted into Orundum equivalent
• Existing Headhunting permits

That gives your total expected pull count. It also compares your total to a pull goal (such as 300 for spark planning).

2) Probability of getting your target

You enter an effective target chance per pull. For example, if your target is roughly 1% per pull, enter 1. The calculator estimates:

• Chance of getting at least 1 copy
• Chance of getting at least your desired number of copies
• Expected number of copies over all pulls

Choosing a realistic target-rate input

The most common mistake is entering 2% because that is the six-star rate. But if your target is only one unit on rate-up, your effective chance is lower.

• Example: 2% six-star rate and roughly 50% chance the six-star is your target → about 1% effective per pull.
• If your banner structure is split or diluted, your effective rate can be lower than 1%.

If you are unsure, test multiple values (0.7%, 1.0%, 1.2%) to see best-case and worst-case outcomes.

Important caveat: pity mechanics are simplified

Real Arknights pity systems are more nuanced than a flat per-pull probability. This calculator intentionally uses a simplified model so you can plan quickly. It is best used for budgeting and expectation management, not exact banner simulation.

If your plan is very tight (for example, deciding whether to skip one banner), combine this tool with event schedules, upcoming shop cert purchases, and your own play consistency.

Practical saving strategy before a major banner

A simple 4-step approach

• Set one clear target: single copy, potential copies, or spark safety.
• Enter conservative income: use lower estimates for event rewards and daily consistency.
• Track weekly: update inputs each reset so your forecast stays honest.
• Use a stop rule: decide in advance when to stop pulling if luck is poor.

Final thoughts

The biggest value of an Arknights calculator is not math for its own sake; it is emotional control. When your pull plan is visible and realistic, you avoid panic spending and make better long-term choices for your account.

Use this page as your quick planning dashboard whenever a new banner is announced. Update numbers, compare scenarios, and commit to a pull strategy before the banner starts.