Arknights Calculator
Estimate your future Orundum and total Headhunting pulls for upcoming banners.
Total Estimated Pulls
Ready for your next 6-star operator!
Income Source Distribution
| Source | Weekly Rate | Total for Period |
|---|
*Calculation assumes 1 pull = 600 Orundum. Does not include yellow certificate shop resets or maintenance compensation.
What is an Arknights Calculator?
An Arknights Calculator is a specialized tool designed for players of the tower-defense gacha game, Arknights. Its primary function is to help Doctors manage their premium currencies, specifically Orundum and Originite Prime, to plan for future banners. Whether you are a F2P (Free to Play) player or a monthly card holder, knowing exactly how many pulls you will have by the time a limited banner arrives is crucial for strategic resource allocation.
Who should use it? Any player aiming for specific operators like Chen the Holungday, Texas the Omertosa, or Mlynar. A common misconception is that Orundum income is random; however, daily and weekly mission rewards, along with Annihilation, provide a very predictable baseline for savings.
Arknights Calculator Formula and Mathematical Explanation
The math behind an Arknights Calculator is deterministic, based on fixed cycles. The core formula combines static inventory with time-based generation.
The Core Formula:
Total Pulls = (Current Inventory + (Daily Income × Days) + (Weekly Income × Weeks) + (Annihilation × Weeks)) / 600
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Daily Missions | Guaranteed daily reward | Orundum | 100 per day |
| Weekly Missions | Guaranteed weekly reward | Orundum | 500 per week |
| Annihilation | Weekly clearance reward | Orundum | 1200 – 1800 per week |
| Monthly Card | Paid subscription bonus | Orundum | 200 per day |
Practical Examples (Real-World Use Cases)
Example 1: The F2P Saver
A player has 12,000 Orundum and 20 OP. They have 60 days until a limited banner. They do not have a monthly card and have a 1800 Annihilation cap.
Results: In 60 days (roughly 8.5 weeks), they gain 6,000 from dailies, 4,500 from weeklies, and 15,300 from Annihilation. Total Orundum becomes 37,800 + (20 * 180) = 41,400. That is 69 pulls.
Example 2: The Monthly Card User
A player starts with 0 Orundum but has a monthly card. In 30 days, they earn 3,000 (dailies) + 6,000 (monthly card) + 2,000 (weeklies) + 7,200 (Annihilation) = 18,200 Orundum, equivalent to roughly 30 pulls.
How to Use This Arknights Calculator
- Enter Dates: Select today's date and the estimated date of the banner you want. Our Arknights Calculator will automatically compute the number of days and weeks.
- Input Inventory: Add your current Orundum, Originite Prime, and tickets. Note that 1 OP is treated as 180 Orundum for pull calculations.
- Select Income Sources: Choose your Annihilation tier and toggle the Monthly Card option.
- Review Results: The primary green card shows your total pulls. The breakdown table helps you see where your income is coming from.
- Decision Making: If you are short of the "spark" (300 pulls for limited banners), you may need to reconsider your spending or prioritize Orundum farming.
Key Factors That Affect Arknights Calculator Results
- Event Rewards: Most events provide 10-20 OP and sometimes special Headhunting tickets. These are not included in baseline calculations.
- Maintenance Compensation: Typically, 200 Orundum is given per maintenance. This adds up over several months.
- Yellow Certificate Shop: Experienced players use 258 Yellow Certificates to buy 38 pulls monthly. Check out our pulls guide for details.
- Green Certificate Shop: The first and second tiers of the green cert shop provide Orundum and tickets.
- Originium Shard Crafting: Trading sanity for Orundum in the base is a factor for end-game players using an sanity calculator.
- Daily Login Bonuses: Occasional login campaigns can provide extra resources that an Arknights Calculator might not predict.
Frequently Asked Questions (FAQ)
How many pulls are needed for a guaranteed 6-star?
Arknights has a pity system. At 50 pulls without a 6-star, the rate increases by 2% per pull. On average, you get a 6-star every 35-40 pulls.
What is a "Spark" in Arknights?
For limited banners, 300 pulls allow you to directly buy the featured operator from the shop. This tool helps you reach that goal.
Should I convert Originite Prime to Orundum?
F2P players often do this for pulls. However, many players save OP for high-quality character skins. Always account for skins in your Arknights Calculator planning.
Does this calculate Recruitment?
No, recruitment is a separate mechanic. Use our Arknights recruitment tool for tag combinations.
How accurate is the Annihilation income?
Extremely accurate. As long as you clear your weekly cap, the income is guaranteed. Make sure your leveling calculator reflects a team strong enough to clear it.
Does the Monthly Card stack?
Buying multiple monthly cards extends the duration; it does not double the daily income. Our calculator treats it as a flat daily bonus.
How many pulls do I get per month?
A F2P player gets roughly 15-20 pulls per month from missions and Annihilation, while a monthly card user gets around 25-30 pulls.
Is it worth it to craft Orundum?
Usually no, as it consumes Sanity that could be used for materials. Refer to gacha savings tips for more efficient methods.
Related Tools and Internal Resources
- Arknights Recruitment Tool – Find the best tag combinations for 4, 5, and 6-star operators.
- Orundum Farming Guide – Maximize your weekly currency gain with these tips.
- Leveling Calculator – Calculate the LMD and EXP required for Elite 2 promotions.
- Sanity Management Tool – Plan your farm runs and potion usage efficiently.
- Comprehensive Pulls Guide – Understanding pity, soft-pity, and limited banner rules.
- Gacha Savings Tips – How to manage your resources for the long term.