pokemon accuracy calculator

How this Pokémon move accuracy calculator helps in battle

Pokémon battles are full of risk management. Sometimes a 70% accurate move wins you the game. Other times it misses and you lose momentum instantly. This calculator gives you a precise hit chance after stage boosts and extra effects so you can decide whether to click the high-power move or choose a safer line.

• Estimate real hit probability after accuracy/evasion changes
• Model ability and item effects like Compound Eyes and Wide Lens
• See multi-turn odds such as “What is the chance I hit at least once in 3 turns?”

Core formula used

For most modern mainline games, effective accuracy can be modeled with:

Effective Accuracy = Base Accuracy × (User Accuracy Multiplier ÷ Target Evasion Multiplier) × Other Modifier

The result is then clamped between 0% and 100% for practical play.

Stage multipliers (accuracy and evasion)

• If stage is 0: multiplier = 1.0
• If stage is positive: multiplier = (3 + stage) / 3
• If stage is negative: multiplier = 3 / (3 - stage)

Example: +2 accuracy gives 5/3 (~1.667x), while +2 evasion on the target gives the same multiplier to their dodge chance in the denominator.

Common modifiers to include

Abilities

• Compound Eyes: boosts move accuracy (typically 1.3x)
• Hustle: lowers physical move accuracy (typically 0.8x)
• No Guard: moves used by or against the user do not miss

Items

• Wide Lens: small boost to move accuracy (typically 1.1x)
• Bright Powder / Lax Incense: may lower opponent hit chance depending on ruleset/game

Move and effect interactions

• Moves such as Aerial Ace and Swift usually bypass standard accuracy checks
• Lock-On / Mind Reader can force a hit on the next move
• Some weather/field/ability interactions can alter accuracy in specific generations

Practical examples

Example 1: Thunder with no weather support

Base 70%, no stage changes, no modifier: effective accuracy is 70%. Over 2 attempts, chance to hit at least once is 91%.

Example 2: Stone Edge + Wide Lens

Base 80%, modifier 110%: effective accuracy is 88%. If you need to connect twice in a row, your chance is 0.88 × 0.88 = 77.44%.

Example 3: Opponent used Double Team once

With target evasion at +1 (4/3), your 100% move effectively becomes 75% before other effects.

Accuracy strategy tips

• If your win condition needs multiple hits, prioritize consistency over raw power.
• Track boosts carefully: one stage can dramatically shift expected outcomes.
• Use this calculator before team building to decide if a low-accuracy move is worth the slot.
• In long games, “safe damage now” often outperforms “high roll later.”

Final note

Accuracy mechanics can vary slightly by generation, battle format, and specific move exceptions. This calculator is designed for practical decision-making and works well for most competitive scenarios.