Pokemon Sword Catch Rate Calculator

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Pokemon Sword Catch Rate Calculator

Poke Ball (1x) Great Ball (1.5x) Ultra Ball (2x) Dusk Ball (In Cave/Night) (3x) Repeat Ball (Already Caught) (3.5x) Timer Ball (Turn 10+) (4x) Quick Ball (Turn 1) (5x) Net Ball (Water/Bug) (3.5x) Master Ball (Auto)
None (1x) Paralyzed (1.5x) Poisoned (1.5x) Burned (1.5x) Asleep (2.5x) Frozen (2.5x)
Enter values to see your probability

How the Catch Rate Formula Works in Sword & Shield

Catching Pokemon in Pokemon Sword and Shield isn't just luck. The game uses a complex mathematical formula to determine if the ball shakes once, twice, three times, or successfully clicks. Our calculator utilizes the standard Gen 8 capture logic.

The core variables involved are the Base Capture Rate of the species (legendaries like Zacian usually have a low rate of 10, while Magikarp is 255), the current HP ratio of the target, and multipliers from your Poke Ball and any status conditions inflicted.

Pro Tip: Bringing a Pokemon to 1 HP using the move False Swipe and inflicting Sleep increases your odds significantly more than any other combination.

Catch Probability Multipliers

  • Status Conditions: Sleep and Freeze provide a 2.5x bonus. Paralysis, Burn, and Poison provide a 1.5x bonus.
  • Ball Bonuses: While an Ultra Ball is reliable (2x), specialized balls like the Quick Ball (5x on the first turn) or the Dusk Ball (3x in caves/night) are often superior.
  • HP Factor: The lower the HP, the higher the catch value. Reducing a Pokemon to below 25% of its max health is crucial for difficult targets.

Realistic Examples

Scenario 1: Catching a Legendary (Rate 10)
If you are facing a legendary at 1 HP, using an Ultra Ball while it is Paralyzed, your success chance per ball is approximately 5.8%. It might take about 12-15 balls on average.

Scenario 2: Turn 1 Quick Ball
A Quick Ball used on a standard Pokemon (Rate 45) at full HP on the very first turn has a massive 42% success rate, making it one of the most efficient strategies for filling your Pokedex quickly.

function calculateCatchRate() { var baseRate = parseFloat(document.getElementById("baseRate").value); var maxHp = parseFloat(document.getElementById("maxHp").value); var curHp = parseFloat(document.getElementById("currHp").value); var ballBonus = parseFloat(document.getElementById("ballType").value); var statusBonus = parseFloat(document.getElementById("statusBonus").value); if (isNaN(baseRate) || isNaN(maxHp) || isNaN(curHp)) { document.getElementById("finalChance").innerHTML = "Error"; document.getElementById("shakeLogic").innerHTML = "Please enter valid numerical values."; return; } if (curHp > maxHp) curHp = maxHp; if (curHp = 255) { document.getElementById("finalChance").innerHTML = "100%"; document.getElementById("shakeLogic").innerHTML = "A Master Ball never fails! Guaranteed catch."; return; } // Capture Value Formula (a) // a = (((3 * MaxHP – 2 * CurrHP) * Rate * Ball) / (3 * MaxHP)) * Status var captureValue = (((3 * maxHp – 2 * curHp) * baseRate * ballBonus) / (3 * maxHp)) * statusBonus; var probability = 0; if (captureValue >= 255) { probability = 100; } else { // Modern Gen probability approximation P = (a/255)^0.75 // This accounts for the 4 shake checks probability = Math.pow(captureValue / 255, 0.75) * 100; } if (probability 100) probability = 100; document.getElementById("finalChance").innerHTML = probability.toFixed(2) + "%"; var ballsNeeded = Math.ceil(100 / probability); var feedback = "On average, you will need " + ballsNeeded + " " + (ballsNeeded == 1 ? "ball" : "balls") + " to succeed."; if (probability > 90) { feedback = "Excellent odds! You are almost guaranteed to catch it."; } else if (probability < 5) { feedback = "Very low odds. Try reducing HP further or using a better Status (Sleep)."; } document.getElementById("shakeLogic").innerHTML = feedback; }

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