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Pokemon Go Battle Calculator - Win Rate & Team Optimizer

Free Pokemon Go battle calculator to check your best counters and movesets instantly. Enter your Pokemon to get optimal battle strategy results.

⚡ Free to use 📱 Mobile friendly 🕒 Updated: June 13, 2026
🧮 Pokemon Go Battle Calculator
function calculate() { const cp = parseFloat(document.getElementById("i1").value) || 0; const atkIV = parseInt(document.getElementById("i2").value) || 0; const defIV = parseInt(document.getElementById("i3").value) || 0; const staIV = parseInt(document.getElementById("i4").value) || 0; const level = parseFloat(document.getElementById("i5").value) || 1; const leagueCap = parseInt(document.getElementById("i6").value); // CP formula: CP = (Attack * sqrt(Defense) * sqrt(Stamina) * CPM^2) / 10 const cpmValues = { 1: 0.094, 1.5: 0.135, 2: 0.166, 2.5: 0.192, 3: 0.215, 3.5: 0.236, 4: 0.255, 4.5: 0.273, 5: 0.290, 5.5: 0.306, 6: 0.321, 6.5: 0.335, 7: 0.349, 7.5: 0.362, 8: 0.375, 8.5: 0.387, 9: 0.399, 9.5: 0.411, 10: 0.422, 10.5: 0.432, 11: 0.443, 11.5: 0.453, 12: 0.462, 12.5: 0.472, 13: 0.481, 13.5: 0.490, 14: 0.499, 14.5: 0.507, 15: 0.515, 15.5: 0.523, 16: 0.531, 16.5: 0.539, 17: 0.547, 17.5: 0.555, 18: 0.562, 18.5: 0.569, 19: 0.577, 19.5: 0.584, 20: 0.591, 20.5: 0.597, 21: 0.604, 21.5: 0.610, 22: 0.617, 22.5: 0.623, 23: 0.630, 23.5: 0.636, 24: 0.642, 24.5: 0.648, 25: 0.654, 25.5: 0.660, 26: 0.666, 26.5: 0.672, 27: 0.678, 27.5: 0.683, 28: 0.689, 28.5: 0.695, 29: 0.701, 29.5: 0.706, 30: 0.712, 30.5: 0.717, 31: 0.723, 31.5: 0.728, 32: 0.734, 32.5: 0.739, 33: 0.745, 33.5: 0.750, 34: 0.755, 34.5: 0.761, 35: 0.766, 35.5: 0.771, 36: 0.777, 36.5: 0.782, 37: 0.787, 37.5: 0.792, 38: 0.797, 38.5: 0.802, 39: 0.807, 39.5: 0.812, 40: 0.817, 40.5: 0.822, 41: 0.826, 41.5: 0.831, 42: 0.836, 42.5: 0.840, 43: 0.845, 43.5: 0.849, 44: 0.854, 44.5: 0.858, 45: 0.863, 45.5: 0.867, 46: 0.872, 46.5: 0.876, 47: 0.880, 47.5: 0.885, 48: 0.889, 48.5: 0.893, 49: 0.898, 49.5: 0.902, 50: 0.906 }; const baseAtk = 100; const baseDef = 100; const baseSta = 100; const totalAtk = baseAtk + atkIV; const totalDef = baseDef + defIV; const totalSta = baseSta + staIV; const cpm = cpmValues[level] || 0.5; const calculatedCP = Math.floor((totalAtk * Math.sqrt(totalDef) * Math.sqrt(totalSta) * cpm * cpm) / 10); // Stat product const statProduct = totalAtk * totalDef * totalSta; // IV percent const ivPercent = ((atkIV + defIV + staIV) / 45) * 100; // CP remaining under cap const cpRemaining = Math.max(0, leagueCap - calculatedCP); // Determine color coding let cpColor = "red"; let ivColor = "yellow"; let spColor = "yellow"; if (calculatedCP <= leagueCap && calculatedCP > leagueCap * 0.9) { cpColor = "green"; } else if (calculatedCP <= leagueCap) { cpColor = "yellow"; } if (ivPercent >= 90) { ivColor = "green"; } else if (ivPercent >= 70) { ivColor = "yellow"; } if (statProduct > 800000) { spColor = "green"; } else if (statProduct > 600000) { spColor = "yellow"; } const primaryLabel = "Battle Readiness Score"; const primaryValue = calculatedCP <= leagueCap ? "ELIGIBLE" : "OVER CAP"; const primarySub = `CP: ${calculatedCP.toLocaleString()} / ${leagueCap.toLocaleString()} cap`; showResult(primaryValue, primaryLabel, [ { label: "Total CP", value: calculatedCP.toLocaleString(), cls: cpColor }, { label: "IV Percentage", value: ivPercent.toFixed(1) + "%", cls: ivColor }, { label: "Stat Product", value: statProduct.toLocaleString(), cls: spColor }, { label: "CP Remaining", value: cpRemaining.toLocaleString(), cls: cpRemaining > 0 ? "green" : "red" }, { label: "Attack IV", value: atkIV + "/15", cls: atkIV >= 13 ? "green" : atkIV >= 10 ? "yellow" : "red" }, { label: "Defense IV", value: defIV + "/15", cls: defIV >= 13 ? "green" : defIV >= 10 ? "yellow" : "red" }, { label: "Stamina IV", value: staIV + "/15", cls: staIV >= 13 ? "green" : staIV >= 10 ? "yellow" : "red" }, { label: "Pokemon Level", value: level.toString(), cls: "yellow" } ]); // Breakdown table const breakdownHTML = `
📊 Detailed Battle Calculation
Base Attack${baseAtk}
Base Defense${baseDef}
Base Stamina${baseSta}
Attack IV Bonus+${atkIV}
Defense IV Bonus+${defIV}
Stamina IV Bonus+${staIV}
Total Attack${totalAtk}
Total Defense${totalDef}
Total Stamina${totalSta}
CP Multiplier (Level ${level})${cpm.toFixed(4)}
Formula(${totalAtk} × √${totalDef} × √${totalSta} × ${cpm.toFixed(4)}²) / 10
Calculated CP${calculatedCP.toLocaleString()}
League Cap${leagueCap.toLocaleString()}
Status${calculatedCP <= leagueCap ? "✅ Eligible" : "❌ Over Cap"}
`; document.getElementById("breakdown-wrap").innerHTML = breakdownHTML; } function showResult(primaryValue, label, items) { document.getElementById("res-value").textContent = primaryValue; document.getElementById("res-label").textContent = label; document.getElementById("res-sub").textContent = items.find(i => i.label === "Total CP")?.value || ""; const grid = document.getElementById("result-grid"); grid.innerHTML = ""; items.forEach(item => { const div = document.createElement("div"); div.className = `result-item ${item.cls || ""}`; div.innerHTML = `
${item.label}
${item.value}
`; grid.appendChild(div); }); } function resetCalc() { document.getElementById("i1").value = "2500"; document.getElementById("i2").value = "15"; document.getElementById("i3").value = "15"; document.getElementById("i4").value = "15"; document.getElementById("i5").value = "40"; document.getElementById("i6").value = "150
📊 Fast Move Damage Comparison for Top Pokemon in Great League
📋 Table of Contents
  1. Use the Pokemon Go Battle Calculator
  2. What is Pokemon Go Battle Calculator?
  3. How to Use
  4. Formula Used
  5. Example Calculation
  6. Benefits
  7. Tips and Tricks
  8. Conclusion
  9. FAQ (8 Questions)

What is Pokemon Go Battle Calculator?

A Pokemon Go Battle Calculator is a specialized digital tool designed to simulate combat outcomes between Pokemon in Niantic's augmented reality game, Pokemon Go. Unlike simple CP (Combat Power) estimators, this calculator evaluates real-time battle metrics including Attack, Defense, and Stamina (HP) stats, factoring in move types, weather boosts, shield usage, and IV (Individual Values) distributions. For competitive players participating in the Go Battle League, understanding precise damage breakpoints and bulkpoints is critical for climbing ranks from Ace to Legend tier.

Serious Pokemon Go trainers, PvP enthusiasts, and even content creators use this battle calculator to optimize their teams before investing precious Stardust and Candy. The tool eliminates guesswork by providing exact numbers on how many Fast Moves or Charged Moves a Pokemon can survive, or how many turns it takes to reach a Charged Move. For example, a rank 1 Azumarill in Great League has vastly different survivability than a rank 4000 Azumarill, and this calculator makes that distinction crystal clear.

Our free online Pokemon Go Battle Calculator requires no signup, no downloads, and delivers instant results with a full step-by-step breakdown of the simulated battle. It handles all three standard leagues (Great, Ultra, Master) and supports every Pokemon species currently available in the game.

How to Use This Pokemon Go Battle Calculator

Using the Pokemon Go Battle Calculator is straightforward even if you are new to competitive battling. The interface is designed for both casual players checking a single matchup and hardcore simmers running dozens of scenarios. Follow these five steps to get your first accurate battle simulation.

  1. Select the Attacking Pokemon: Start by choosing your Pokemon from the dropdown menu. The calculator includes all species from Generation 1 through Generation 8, including Shadow and Purified variants. After selecting the species, input its Attack, Defense, and Stamina IVs (0-15 each). If you do not know your exact IVs, use the default 15/15/15 for hundo simulations or consult an IV checker app. For Shadow Pokemon, check the "Shadow" box to apply the 20% damage bonus and 20% defense reduction automatically.
  2. Set the Attacker's Moveset and Level: Choose the Fast Move and Charged Move from the dropdown lists. The calculator uses the current game master data, including Community Day moves and legacy moves. Then set the Pokemon's level (1-51) using the slider or manual input. Level 50 is the cap for Master League, while Level 40 is standard for Great and Ultra Leagues unless you use XL Candy. The CP will auto-calculate based on the stats and level you enter.
  3. Configure the Defending Pokemon: Repeat the same selection process for the defender. This is the Pokemon you want to test your attacker against. You can input any species, IV combination, moveset, and level. For realistic simulations, use typical PvP IV spreads like 0/15/15 for Great League Azumarill or 15/15/15 for Master League Dialga. The calculator will display the defender's effective bulk and stat product.
  4. Adjust Battle Conditions: Set the shield count for both sides (0-2 shields). This is crucial because shield usage dramatically changes outcome. Also toggle Weather Boost effects (e.g., Rain boosts Water moves, Sunny boosts Fire moves). You can enable or disable Best Friends bonus, which adds a 10% damage boost when raiding but does not apply in PvP. Finally, set the field size for Fast Moves per Charged Move energy generation.
  5. Click Calculate and Review Results: Press the "Calculate Battle" button. Within seconds, the tool displays a detailed simulation including: total damage dealt, damage per Fast Move, number of Fast Moves to reach Charged Move, time to win (TTW), and whether the attacker wins in the 1-shield, 0-shield, or 2-shield scenario. The breakdown shows each turn of the battle, including when shields are used and when the knockout occurs.

For advanced users, the calculator also provides a "Bulk Check" feature that shows how many Fast Moves the defender can survive before fainting. This is invaluable for determining if your Pokemon hits a damage breakpoint or survives a crucial hit. Save your favorite configurations as presets for quick comparison later.

Formula and Calculation Method

Our Pokemon Go Battle Calculator uses the exact damage formula reverse-engineered from Niantic's game client and validated by the Silph Road research community. The formula accounts for every variable that affects combat in Pokemon Go, from base stats and IVs to move power and type effectiveness. Understanding this formula helps you make better decisions about which Pokemon to power up and which moves to use.

Formula
Damage = Floor(0.5 * (Attack_Total / Defense_Total) * Move_Power * STAB * Type_Effectiveness * Weather_Bonus * Shadow_Bonus * Friendship_Bonus) + 1

Each variable in this formula plays a specific role in determining the final damage number. The "Floor" function means the result is always rounded down to the nearest whole number, and the "+1" ensures that even the weakest attack always does at least 1 damage. This prevents zero-damage scenarios in PvP.

Understanding the Variables

Attack_Total is calculated as (Base_Attack + Attack_IV) multiplied by the Pokemon's CP Multiplier at its current level. The CP Multiplier is a hidden game value that scales with level, ranging from 0.094 at level 1 to 0.7903 at level 50. For Shadow Pokemon, this value gets multiplied by 1.2 (20% increase) before the formula runs. Defense_Total follows the same logic: (Base_Defense + Defense_IV) * CP_Multiplier, but Shadow Pokemon have their defense multiplied by 0.8333 instead of 1.2.

Move_Power is the base power of the move as listed in the game data. For example, Counter has 12 base power, while Hydro Cannon has 80 base power. STAB (Same Type Attack Bonus) applies a 1.2x multiplier if the move type matches one of the Pokemon's types. Type_Effectiveness uses the standard Pokemon type chart: 1.6x for super effective, 0.625x for not very effective, and 0.391x for double resistances. In Pokemon Go, immunities do not exist; instead, double resistances apply a 0.391x multiplier.

Weather_Bonus adds a 1.2x multiplier if the weather in-game boosts the move type (e.g., Partly Cloudy boosts Normal and Rock moves). Friendship_Bonus applies only in raids and gym battles (not PvP) and can reach 1.1x at Best Friends level. The calculator automatically disables this for PvP simulations. Finally, the Shadow_Bonus is already baked into the Attack_Total and Defense_Total calculations as described above.

Step-by-Step Calculation

To manually verify a calculation, start by computing the CP Multiplier for both Pokemon at their given levels. You can find CP Multiplier tables online or use the calculator's built-in lookup. Multiply each Pokemon's base stats by this multiplier, then add their IVs. For the attacker, multiply the total Attack by 1.2 if Shadow. For the defender, multiply total Defense by 0.8333 if Shadow. Divide the attacker's Attack_Total by the defender's Defense_Total. Multiply this quotient by the Move_Power, then by STAB (1.0 or 1.2), Type_Effectiveness (0.391 to 1.6), Weather_Bonus (1.0 or 1.2), and Friendship_Bonus (1.0 for PvP). Apply the Floor function and add 1. The result is the damage dealt per Fast Move or Charged Move.

Example Calculation

Let's walk through a realistic Great League matchup that many trainers face: a Shadow Swampert vs a Galarian Stunfisk. This is a common lead encounter where knowing exact damage numbers can determine whether you stay in or swap out.

Example Scenario: A level 40 Shadow Swampert (Attack IV 15, Defense IV 15, Stamina IV 15) using Mud Shot as Fast Move and Hydro Cannon as Charged Move, attacks a level 40 Galarian Stunfisk (Attack IV 0, Defense IV 15, Stamina IV 15) using Mud Shot and Rock Slide. No shields used, no weather boost. Great League CP cap is 1500.

First, calculate the CP Multiplier for both at level 40, which is approximately 0.7903. For Shadow Swampert: Base Attack is 208, so Attack_Total = (208 + 15) * 0.7903 * 1.2 (Shadow bonus) = 223 * 0.7903 * 1.2 = 211.4. Defense_Total for Galarian Stunfisk: Base Defense is 139, so (139 + 15) * 0.7903 = 154 * 0.7903 = 121.7. Now calculate Mud Shot damage: Move_Power = 5. No STAB for Swampert (Water/Ground vs Mud Shot is Ground, which Swampert has). STAB = 1.2. Type_Effectiveness: Ground vs Stunfisk (Ground/Steel) is neutral (1.0). Damage = Floor(0.5 * (211.4 / 121.7) * 5 * 1.2 * 1.0) + 1 = Floor(0.5 * 1.737 * 5 * 1.2) + 1 = Floor(5.211) + 1 = 5 + 1 = 6 damage per Mud Shot.

For Hydro Cannon: Move_Power = 80. STAB = 1.2 (Water type). Type_Effectiveness: Water vs Stunfisk (Ground/Steel) is super effective (1.6x). Damage = Floor(0.5 * 1.737 * 80 * 1.2 * 1.6) + 1 = Floor(133.4) + 1 = 133 + 1 = 134 damage. Galarian Stunfisk has Stamina base 109, plus 15 IV, so HP = (109 + 15) * 0.7903 = 98.0 HP. A single Hydro Cannon deals 134 damage, which is more than 98, so the Stunfisk faints in one hit. The calculator confirms Shadow Swampert wins the 0-shield matchup with one Hydro Cannon.

Another Example

Consider a Master League scenario: a level 50 Dialga (15/15/15) using Dragon Breath and Draco Meteor vs a level 50 Garchomp (15/15/15) using Mud Shot and Earth Power. No shields, no weather. Dialga's Attack_Total = (275 + 15) * 0.7903 = 229.2. Garchomp's Defense_Total = (193 + 15) * 0.7903 = 164.4. Dragon Breath has 6 power, STAB 1.2, super effective vs Dragon (Garchomp is Dragon/Ground) = 1.6x. Damage per Dragon Breath = Floor(0.5 * (229.2/164.4) * 6 * 1.2 * 1.6) + 1 = Floor(0.5 * 1.394 * 6 * 1.92) + 1 = Floor(8.03) + 1 = 8 + 1 = 9 damage. Garchomp has 108 base Stamina + 15 = 123 * 0.7903 = 97.2 HP. It takes 11 Dragon Breaths to KO (97.2 / 9 = 10.8, rounded up). Dialga wins comfortably because Draco Meteor is not needed. The calculator shows Dialga wins in 11 turns versus Garchomp needing 14 Mud Shots to reach Earth Power.

Benefits of Using Pokemon Go Battle Calculator

Using a dedicated Pokemon Go Battle Calculator transforms your gameplay from guesswork to data-driven strategy. Instead of relying on vague tier lists or anecdotal evidence, you get hard numbers that directly inform your team building, power-up decisions, and in-battle tactics. Here are the five biggest benefits you gain from regular use of this tool.

  • Optimize Stardust and Candy Investment: Stardust is the most precious resource in Pokemon Go, with each power-up costing increasing amounts. The calculator lets you test a Pokemon at different levels (e.g., level 40 vs level 50) to see if the extra investment actually changes any meaningful breakpoints. For example, you might discover that a level 49.5 Umbreon hits the same bulkpoints as a level 50 Umbreon, saving you 200,000 Stardust. This is especially important for XL Candy decisions in Master League.
  • Identify Winning and Losing Matchups Before Battling: Instead of learning matchups through painful losses in the Go Battle League, you can simulate hundreds of scenarios in minutes. The calculator shows you exactly which Pokemon your team beats and which ones counter you. If your lead Swampert loses to Azumarill in all shield scenarios, you know to swap immediately. This pre-battle knowledge directly translates into higher win rates and faster rank progression.
  • Understand IV Breakpoints and Bulkpoints: Not all 15/15/15 Pokemon are optimal. In Great League, low Attack IVs (like 0/15/15) often provide better stat product because CP is capped. The calculator demonstrates this numerically: a rank 1 Medicham (5/15/15) survives one extra Counter from a Deoxys Defense compared to a hundo. These micro-advantages decide close matches. The tool highlights when a specific IV combination reaches a damage breakpoint (e.g., your Fast Move starts doing +1 damage) or a bulkpoint (you survive an extra hit).
  • Simulate Shield Scenarios for Better Decision Making: Shield management is the most skill-intensive part of PvP. The calculator runs all three shield scenarios (0-0, 1-1, 2-2, and uneven counts) so you know exactly when to shield and when to let a Pokemon faint. For instance, you might learn that your Bastiodon beats Skarmory in the 2-shield but loses in the 1-shield. Armed with this knowledge, you can bait shields or save them for later in the match.
  • Test Team Synergy and Weakness Coverage: Build a full team of three Pokemon in the calculator's team builder mode. The tool analyzes type coverage, common weaknesses, and which Pokemon on your team handle specific threats. If your team has a double weakness to Fighting types (e.g., Bastiodon + Umbreon), the calculator flags this vulnerability. You can then swap one Pokemon to cover that gap, creating a balanced team that handles the current meta.

Tips and Tricks for Best Results

To get the most out of your Pokemon Go Battle Calculator, you need to go beyond basic inputs. Expert simmers use advanced techniques to extract every bit of actionable data. These tips come from top-ranked PvP players who consistently reach Legend rank each season.

Pro Tips

  • Always simulate with the exact IVs of your actual Pokemon, not generic rank 1 spreads. A 10/12/14 Azumarill performs differently than a 0/15/15, and the calculator accounts for those differences. Use an IV scanner app or Pokegenie to get precise numbers before entering them.
  • Run simulations for both the lead matchup and the "safe swap" scenario. The safe swap is the Pokemon you bring in after losing the lead. For example, test how your Sableye handles an opponent's Vigoroth after you have used one shield. This prepares you for the most common battle flow.
  • Check damage breakpoints against the top 20 most common Pokemon in your league. Use PvPoke's rankings to identify these threats. For each of your team members, simulate their Fast Move against each top meta Pokemon. If you find a breakpoint where you deal 1 extra damage per turn, that Pokemon becomes significantly stronger.
  • Use the "bulk check" feature to see how many of a specific Fast Move your Pokemon can survive. This is critical for knowing when you can farm down a low-HP opponent versus needing to throw a Charged Move. For example, if your Talonflame can survive two Rock Slides from G-Fisk but not three, you know exactly when to shield.
  • Simulate with weather boosts turned on even if you are not raiding. In the Go Battle League, weather is fixed for each set of five battles. If the current weather boosts your team's moves, the calculator shows the boosted damage numbers. This can turn a losing matchup into a winning one.

Common Mistakes to Avoid