Pokémon GO Purification Calculator – Optimize Your Shadow Pokémon


Pokémon GO Purification Calculator

Maximize Your Stardust and Candy Savings

Shadow Pokémon Purification Cost


Select the Stardust cost tier for purification.


Enter the base Attack IV (0-15).


Enter the base Defense IV (0-15).


Enter the base Stamina IV (0-15).


Enter the Pokémon’s current level (approximate).



What is a Pokémon GO Purification Calculator?

A Pokémon GO Purification Calculator is a specialized tool designed to help Trainers estimate the Stardust and Candy costs associated with purifying Shadow Pokémon in the popular augmented reality game, Pokémon GO. Shadow Pokémon, obtained from defeating Team GO Rocket Grunts, come with a significant attack boost but also higher power-up costs. Purifying them not only removes the attack penalty and increases their IVs but also drastically reduces the Stardust and Candy required for their first power-up. This calculator simplifies the decision-making process by showing you the potential savings, allowing you to prioritize which Shadow Pokémon are most cost-effective to purify.

Who Should Use It?

  • New and Returning Trainers: To understand the basic mechanics of purification and its resource implications.
  • Resource Management Enthusiasts: Players who meticulously track and optimize their Stardust and Candy reserves.
  • Competitive Battlers: Those aiming to build powerful purified Pokémon (like the “Perfect” 100% IV Pokémon achievable through purification) for PvP leagues or raids, while minimizing resource expenditure.
  • Collectors: Players looking to obtain purified versions of rare Pokémon or those seeking the ‘Purified Shiny’ variants.

Common Misconceptions

  • “Purification always makes a Pokémon better”: While it boosts IVs and lowers costs, the inherent attack boost of Shadow Pokémon is often more valuable in PvE (raids) than the purified stats, unless specific IVs or moves are desired.
  • “Purification is always expensive”: The calculator helps highlight that the *first* power-up cost is drastically reduced, making it a strategic way to invest in a Pokémon’s progression.
  • “All purified Pokémon get 100% IVs”: Purification adds a fixed +2 to each IV stat (Attack, Defense, Stamina), capping at 15. It doesn’t guarantee 100% unless the base IVs were already high (e.g., 13/13/13).

Pokémon GO Purification Calculator Formula and Mathematical Explanation

The core of the Pokémon GO Purification Calculator lies in comparing the costs associated with a Shadow Pokémon versus its purified counterpart. The primary benefit of purification is the reduced cost for the initial power-up stages.

Step-by-Step Derivation

  1. Determine Base Costs: Identify the Stardust and Candy cost to purify the specific Shadow Pokémon. This depends on its tier (1500 or 3000 Stardust).
  2. Calculate Purified Power-Up Cost: Estimate the Stardust and Candy cost to power up the Pokémon by one level *after* it has been purified. The game’s mechanics dictate that purified Pokémon gain +2 to each IV and their power-up cost is reduced. We’ll focus on the cost to reach the next power-up level from the Pokémon’s current level.
  3. Calculate Normal Power-Up Cost: Estimate the Stardust and Candy cost to power up the *original Shadow* Pokémon (or a non-purified version) by one level, assuming it had its base IVs.
  4. Calculate IV Boost: Determine the increase in IVs upon purification. This is a fixed +2 to each stat (Attack, Defense, Stamina), up to a maximum of 15.
  5. Calculate Savings: The main result is the difference between the normal power-up cost and the purified power-up cost. This represents the Stardust and Candy saved by purifying *before* the first power-up.

Variable Explanations

The calculator uses several key variables:

Variables Used in Calculation
Variable Meaning Unit Typical Range
Purification Stardust Cost Tier The base Stardust cost to purify the Pokémon (1500 or 3000). Stardust 1500, 3000
Purification Candy Cost The base Candy cost to purify the Pokémon (always 4). Candy 4
Base IV Attack (Base IV A) The Attack stat of the Shadow Pokémon before purification (0-15). Stat Points 0 – 15
Base IV Defense (Base IV D) The Defense stat of the Shadow Pokémon before purification (0-15). Stat Points 0 – 15
Base IV Stamina (Base IV S) The Stamina (HP) stat of the Shadow Pokémon before purification (0-15). Stat Points 0 – 15
Pokémon Level The current approximate level of the Pokémon. Levels 1 – 50
Purified IV Attack (Purified IV A) The Attack stat after purification (+2 to Base IV A, capped at 15). Stat Points 2 – 17 (effectively 2-15)
Purified IV Defense (Purified IV D) The Defense stat after purification (+2 to Base IV D, capped at 15). Stat Points 2 – 17 (effectively 2-15)
Purified IV Stamina (Purified IV S) The Stamina stat after purification (+2 to Base IV S, capped at 15). Stat Points 2 – 17 (effectively 2-15)
Power-Up Stardust Cost The Stardust cost for the *next* power-up stage, varies by level and IVs. Stardust 100 – 10000
Power-Up Candy Cost The Candy cost for the *next* power-up stage. Candy 1 – 10

The calculator approximates the *savings* on the first power-up. The actual cost for subsequent power-ups will differ based on the adjusted IVs.

Practical Examples (Real-World Use Cases)

Example 1: High IV Shadow Machop

A Trainer catches a Shadow Machop with near-perfect IVs for PvP Master League.

  • Inputs:
    • Pokémon Type: 3000 Stardust
    • Base IV Attack: 14
    • Base IV Defense: 15
    • Base IV Stamina: 15
    • Pokémon Level: 1
  • Calculation Breakdown:
    • Purification Cost: 3000 Stardust + 4 Candy.
    • Purified IVs: Attack 15 (14+2 capped), Defense 15 (15+2 capped), Stamina 15 (15+2 capped). Resulting in 15/15/15.
    • Normal Power-Up Cost (Level 1 to 1.5): Approx. 800 Stardust, 1 Candy.
    • Purified Power-Up Cost (Level 1 to 1.5): Approx. 400 Stardust, 1 Candy (due to +IV boost).
  • Calculator Output:
    • Main Result (Savings): ~400 Stardust + 0 Candy (The difference in the *next* power-up cost).
    • Purified Stardust Cost: 3000
    • Purified Candy Cost: 4
    • Normal Stardust Cost (for 1st power-up): 800
    • Normal Candy Cost (for 1st power-up): 1
    • IV Boost: +2 Attack, +2 Defense, +2 Stamina (resulting in 15/15/15)
  • Interpretation: While the immediate purification cost is high (3000 Stardust), the calculator highlights that the subsequent power-up is significantly cheaper than if it remained Shadow. This confirms it’s a good candidate for purification if a 15/15/15 Master League Machamp (eventually a Machamp) is the goal, especially if candy is abundant.

Example 2: Low IV Shadow Beldum

A Trainer finds a Shadow Beldum with low IVs but wants to purify it for the potential 100% IV and the reduced cost.

  • Inputs:
    • Pokémon Type: 3000 Stardust
    • Base IV Attack: 3
    • Base IV Defense: 4
    • Base IV Stamina: 5
    • Pokémon Level: 1
  • Calculation Breakdown:
    • Purification Cost: 3000 Stardust + 4 Candy.
    • Purified IVs: Attack 5 (3+2), Defense 6 (4+2), Stamina 7 (5+2).
    • Normal Power-Up Cost (Level 1 to 1.5): Approx. 800 Stardust, 1 Candy.
    • Purified Power-Up Cost (Level 1 to 1.5): Approx. 600 Stardust, 1 Candy.
  • Calculator Output:
    • Main Result (Savings): ~200 Stardust + 0 Candy.
    • Purified Stardust Cost: 3000
    • Purified Candy Cost: 4
    • Normal Stardust Cost (for 1st power-up): 800
    • Normal Candy Cost (for 1st power-up): 1
    • IV Boost: +2 Attack, +2 Defense, +2 Stamina (resulting in 5/6/7)
  • Interpretation: The calculator shows minimal Stardust savings on the first power-up (200 Stardust). The primary motivation here is achieving a higher IV score (though not 100% in this case) and potentially a purified shiny. The decision hinges less on immediate cost savings and more on the long-term goal for that specific Pokémon. If the goal was purely resource efficiency, this might not be the best candidate.

How to Use This Pokémon GO Purification Calculator

Our Pokémon GO Purification Calculator is designed for ease of use. Follow these simple steps to get accurate results:

Step-by-Step Instructions

  1. Select Purification Stardust Tier: Choose whether the Shadow Pokémon requires 1500 or 3000 Stardust for purification. This is usually indicated in-game.
  2. Enter Base IVs: Input the Attack, Defense, and Stamina IVs of the Shadow Pokémon. These range from 0 to 15. You can find this information in Pokémon GO by tapping the appraisal button.
  3. Input Pokémon Level: Provide the current level of your Shadow Pokémon. You can estimate this based on the power-up stars shown in-game. Level 1 is the default for newly caught Pokémon.
  4. Click “Calculate”: Press the calculate button. The calculator will process the information instantly.

How to Read Results

  • Main Result (Candy/Stardust Saved): This is the most prominent number. It represents the estimated reduction in Stardust and Candy cost for the *first power-up* compared to not purifying. A higher number indicates greater immediate resource savings.
  • Purified Stardust/Candy Cost: The Stardust and Candy needed to perform the purification itself.
  • Normal Stardust/Candy Cost: The estimated cost for the *first power-up* if the Pokémon remained Shadow.
  • IV Boost: Shows the increase (+2 to each stat) that the Pokémon will receive upon purification, and the resulting IVs. This helps determine if purification will result in “Perfect” 100% IVs (if base IVs were 13/13/13 or higher).

Decision-Making Guidance

Use the results to inform your decisions:

  • High Savings: If the calculator shows significant savings, purifying is likely a good resource-efficient move, especially for common Pokémon you plan to power up.
  • Low Savings, High IVs: If savings are minimal but the base IVs are excellent (e.g., 13/13/13 or higher), purification is still valuable for reaching 100% IVs and potentially using in PvP formats that benefit purified Pokémon (like the GO Battle League’s Small Cup or specific tiers).
  • Low Savings, Low IVs: If savings are minimal and the base IVs are poor, consider if the Pokémon has a unique Shadow role or is a shiny/rare catch. Otherwise, it might be more resource-efficient to skip purification and focus on better candidates.
  • Cost vs. Benefit: Always weigh the immediate purification cost against the long-term benefits (reduced power-up costs, better IVs, potential shiny/hundo).

Key Factors That Affect Pokémon GO Purification Results

Several factors influence the effectiveness and perceived value of purifying a Shadow Pokémon:

  1. Base IVs (Individual Values): This is paramount. Purification adds a flat +2 to each IV (Attack, Defense, Stamina), capped at 15. A Shadow Pokémon with 13/13/13 base IVs will become a 15/15/15 purified Pokémon – a “Hundo”. Lower base IVs will result in lower purified IVs, reducing the stat benefit.
  2. Pokémon Level: The higher the Pokémon’s level, the more significant the Stardust and Candy cost for power-ups. This means purification’s benefit of reducing these costs becomes more pronounced at higher levels. A Level 1 Pokémon sees minimal difference in the *next* power-up cost, while a Level 40 Pokémon sees a substantial reduction.
  3. Stardust and Candy Reserves: A Trainer with abundant Stardust and Candy might purify more freely. Conversely, a player conserving resources will be more selective, prioritizing Pokémon offering the greatest savings or the highest potential IVs.
  4. Intended Use (PvP vs. PvE): Shadow Pokémon often retain their unique attack boost, making them superior for raids (PvE) in many cases, even with lower IVs. Purification removes this boost but improves IVs and lowers costs. For PvP, the IV spread is crucial, and sometimes the purified stats (especially with the IV boost) are more desirable than the Shadow attack bonus.
  5. Stardust Cost Tier: The initial purification cost differs. While both 1500 and 3000 Stardust tiers offer reduced power-up costs, the 3000 tier represents a larger upfront investment. The calculator helps determine if the savings justify this larger initial cost.
  6. Rarity and Shiny Potential: Purifying rare Shadow Pokémon or especially Shadow Shinies is often a goal in itself, regardless of minor cost savings. The calculator helps quantify the resource aspect, but the collector’s desire often takes precedence.
  7. Team GO Rocket Leader IV Buffs: When obtaining Shadow Pokémon from Sierra, Cliff, and Arlo, their IVs are higher (64% to 100%) compared to Grunts (10% to 100%). This means purifying Pokémon from Leaders has a greater chance of resulting in high or perfect IVs.

Frequently Asked Questions (FAQ)

  • Q: What is the main benefit of purifying a Pokémon in Pokémon GO?
    A: The primary benefits are: increasing each IV stat by +2 (up to 15), reducing the Stardust and Candy cost for the next power-up significantly, potentially making it easier to reach 100% IVs, and removing the negative stigma of being “Shadow”.
  • Q: Does purification remove the Shadow Pokémon’s attack boost?
    A: Yes, purification removes the Shadow Pokémon’s unique 20% attack bonus. This is why some players prefer to keep strong attackers as Shadow for raids, while others purify for PvP or to achieve 100% IVs.
  • Q: How much Stardust and Candy does purification cost?
    A: It costs a base of 4 Candy and either 1500 or 3000 Stardust, depending on the Pokémon’s tier. This cost is fixed and does not change based on level or IVs.
  • Q: How much does purification increase IVs?
    A: Purification increases each IV stat (Attack, Defense, Stamina) by +2, but cannot exceed the maximum of 15 for any stat.
  • Q: When should I purify a Shadow Pokémon?
    A: Purify when you want to achieve 100% IVs (if base IVs are 13/13/13 or higher), when the reduced power-up cost is strategically beneficial for your resource management, or for specific PvP formats that favor purified Pokémon stats.
  • Q: Is it worth purifying a Pokémon with low base IVs?
    A: Generally, no, unless it’s a rare shiny or you have a very specific goal. The IV boost might not be enough to make it a top performer, and the purification cost might outweigh the minimal power-up savings.
  • Q: How can I check my Pokémon’s IVs in Pokémon GO?
    A: After catching a Pokémon, tap the main menu button (the Poké Ball icon), then tap “Appraise”. Your Gym Leader will give you a summary of your Pokémon’s IVs.
  • Q: Can I transfer a purified Pokémon and get candy?
    A: Yes, purified Pokémon can be transferred like any other Pokémon to receive one Candy.
  • Q: Does the calculator account for the Shadow effect on CP?
    A: This calculator primarily focuses on the Stardust and Candy cost savings for power-ups and the IV changes. While Shadow Pokémon have a higher CP due to the attack bonus, this calculator simplifies by comparing the base costs and the IV boost’s effect on subsequent power-up expenses.

Related Tools and Internal Resources

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