What is the base accuracy for moves?

Each move has its own base accuracy, ranging from 100 (always hits unless accuracy is dropped) to 70 or 50 (risky power moves).

How do accuracy stages affect hit rate?

Accuracy and Evasion work on a 3-point denominator system. At +1 Accuracy, your hit rate is multiplied by 4/3. At -1, it is 3/4.

What is the "Evasion" stat?

Evasion is the defender’s ability to avoid attacks. It uses the same stage system as accuracy but in reverse; +1 Evasion halves your hit rate exactly like -1 Accuracy.

Does "Wide Lens" help with accuracy?

Yes. Wide Lens provides a 10% (1.1x) boost to the accuracy of all moves held by that Pokémon.

What is the "Victory Star" ability?

Victory Star (Victini’s ability) increases the accuracy of Victini and its allies by a flat 1.1x multiplier in battle.

How much does "Compound Eyes" increase accuracy?

Compound Eyes provides a massive 1.3x (30%) boost to accuracy, making moves like Hurricane and Sleep Powder much more reliable.

Does "Gravity" affect accuracy?

Yes. While Gravity is active, all moves have their accuracy increased by a factor of 1.67x (5/3), making almost every move in the game 100% accurate.

Are there moves that never miss?

Yes. Moves like Swift, Aerial Ace, and Aura Sphere are "Aura" moves that bypass the accuracy check entirely and always hit (unless the target is in a semi-invulnerable state like Fly).

What is the effect of "No Guard"?

The No Guard ability makes every move used by or against the owner 100% accurate. This is commonly used by Machamp for Dynamic Punch.

How does weather affect moves like Thunder and Hurricane?

In Rain, Thunder and Hurricane bypass the accuracy check and always hit. In Sun, their accuracy is reduced to 50%.

Pokémon Accuracy Calculator

Calculate the hit probability of your moves in Pokémon. Factor in base accuracy, accuracy and evasion stages, items like Wide Lens, and abilities like Compound Eyes.

Move Base Accuracy

Gravity Field Effect

Attacker Accuracy Stage

Enemy Evasion Stage

Abilities

Held Items

Interpreting Your Result

Use this to manage your risk. If a move has an 80% hit rate, you will miss 1 in every 5 times. High-power moves often trade reliability for strength.

✓ Do's

•Combine low-accuracy moves (like Sleep Powder) with the Compound Eyes ability to increase reliability.
•Use Wide Lens on moves with 90% accuracy to bring them to a "near-guaranteed" 99%.
•Consider "Accuracy Benchmarks" for setup sweepers to avoid being walled by Evasion-boosting opponents.
•Switch to "Never Miss" moves if an opponent is stacking Evasion via Double Team.

✗ Don'ts

•Don't rely on 70% accuracy moves (like Focus Blast) as your only offensive option; they are infamous for missing at critical moments.
•Don't ignore the "Victory Star" boost in Doubles; it affects your partner Pokémon too.
•Don't assume a move is 100% accurate if the opponent has a "Sand Veil" or "Snow Cloak" ability in sand/hail.
•Don't forget that "Haze" or "Clear Smog" can reset accuracy and evasion stages to zero.

How It Works

The Pokémon Accuracy Calculator determines the exact percentage chance of a move hitting its target. Accuracy in Pokémon is a combination of the move’s base accuracy (e.g., Fire Blast’s 85%) and the relative stat stages of both the attacker and the defender. This tool allows you to input your active modifiers, such as abilities, held items, and environmental effects like Gravity, to see your true hit rate before you risk a crucial miss.

Formula Used

Hit Rate = (Base Accuracy * (Accuracy Stage / Evasion Stage) * Item/Ability Modifiers) / 100. Accuracy and Evasion stages range from 3/3 (0) to 9/3 (+6) or 3/9 (-6).

Real Calculation Examples

1Using Fire Blast (85 Accuracy) with Wide Lens (1.1x) results in a 93.5% hit rate.
2A Pokémon with Compound Eyes (1.3x) using Thunder (70 Accuracy) has an impressive 91% hit rate.
3Against an opponent with +2 Evasion, your standard 100% accuracy move only has a 60% chance to hit.

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The Comprehensive Guide

Pokémon Accuracy Calculator: The Math of Hitting and Missing

Every Pokémon battle is a series of calculated risks. One of the most frustrating moments for any trainer is missing a crucial move that would have secured a win. The Pokémon Accuracy Calculator is designed to help you understand the mechanics behind these misses and how to manipulate the odds in your favor. This guide dives deep into hit rates, stages, and the hidden modifiers that determine the fate of every attack.

How is Accuracy Calculated in Pokémon?

Accuracy in Pokémon isn't just a static number written in the move description. It is a dynamic formula that changes every turn based on stat modifiers, items, and abilities. The basic hit probability of any move is determined by this formula:

Hit Rate % = Base Accuracy * (Accuracy Modifier / Evasion Modifier) * Other Multipliers

Understanding Accuracy and Evasion Stages

Like Attack or Defense, Accuracy and Evasion can be modified by up to six stages (+6 to -6). However, the math they use is unique. Accuracy and Evasion stages are based on a 3-point scale.

1. The Accuracy Stage Multipliers

When your Accuracy is modified, your hit rate is multiplied by the following values:

Stage	Multiplier	Percentage
-6	3/9	33.3%
-3	3/6	50%
0	3/3	100%
+3	6/3	200%
+6	9/3	300%

2. The Evasion Stage Multipliers

Evasion works exactly like accuracy but in reverse. A +1 increase in Evasion by the opponent has the same effect on your hit rate as a -1 decrease in your Accuracy. If an opponent has +6 Evasion, your moves are multiplied by 3/9 (only a 33% chance to hit).

Ability Modifiers: The Game Changers

Abilities are often more consistent than stat-boosting moves because they are always active. Top-tier players prioritize these abilities to make high-power, low-accuracy moves viable.

Compound Eyes: Increases accuracy by 30% (1.3x). This transforms Hurricane (70 Acc) into a reliable 91% hit, and Sleep Powder (75 Acc) into a devastating 97.5% hit.
No Guard: Sets the hit rate of every move used by or against the Pokémon to Infinite. It completely bypasses the calculation. This is why Machamp can spam Dynamic Punch without fear.
Victory Star: A rare ability that boosts accuracy for the owner and its partner by 10% (1.1x).

Item Modifiers: Fine-Tuning Your Hit Rate

If you don't have an accuracy-boosting ability, you can use held items. While the boosts are smaller, they can reach specific "Benchmarks" of reliability.

Wide Lens (1.1x)

The Wide Lens is the standard accuracy item. It is most effective on moves that are already close to 100%. For example, it turns a 90% accuracy move into a 99% accuracy move, virtually eliminating the chance of a miss.

Zoom Lens (1.2x)

The Zoom Lens provides a larger 20% boost, but it only applies if the holder moves after the target. This makes it an ideal choice for slow, bulky attackers with low-accuracy nukes.

The Environment: Gravity and Weather

The battlefield itself can dictate your hit probabilities.

Gravity: For 5 turns, the accuracy of all Pokémon is multiplied by 1.67x (5/3). Under Gravity, even the most inaccurate moves (like Hypnosis or Zap Cannon) become nearly 100% accurate.
Rain & Sun: Specifically for the moves Thunder and Hurricane, Rain grants 100% accuracy, while Sun drops them to a risky 50%.
Sandstorm & Hail: Some Pokémon have abilities (Sand Veil/Snow Cloak) that increase their Evasion by 1.25x in these weather conditions.

The Competitive "Never-Miss" Clause

Some moves ignore the Pokémon Accuracy Calculator entirely. These moves (Swift, Aura Sphere, Magic Leaf) have no accuracy check. In competitive formats like VGC, having at least one "Never-Miss" option is a great failsafe against opponents who use "Minimize" or "Double Team" strategies, which are common in "Stall" archetypes.

Conclusion: Accuracy is a Strategy

In mid-to-high level play, missing is rarely "bad luck"—it's usually the result of a bad risk assessment. By using the Pokémon Accuracy Calculator to understand your true hit rates, you can build teams that are statistically robust. Decide whether the 10% risk of Fire Blast is worth the power upgrade over Flamethrower, or use items like Wide Lens to stabilize your offensive core. Master the math, and hit your mark every time.

Frequently Asked Questions

Usage of This Calculator

Who Should Use This?

Competitive Pokémon players, Speedrunners relying on specific hit sequences, and Nuzlocke runners who cannot afford a single miss during a Boss battle.

Limitations

Does not account for "Ohko" moves (Guillotine, etc.) which use a completely different level-based accuracy formula. Does not factor in Flinch or Paralyze chances.

Real-World Examples

The Risky Sweep

Scenario: A Galvantula (Compound Eyes) is using Thunder (70 Base Accuracy) to sweep a team.

Outcome: The calculator shows 70 * 1.3 = 91% Accuracy. The player decides this is reliable enough to prioritize over the weaker Thunderbolt.

The Evasion Wall

Scenario: A player targets a Blissey that has +2 Evasion with a 100% accuracy move.

Outcome: Calculation shows hit rate drops to 60%. The player decides to switch to a Pokémon that knows "Aerial Ace" to bypass the Evasion entirely.

Summary

The Pokémon Accuracy Calculator is your tool for logical risk management. By quantifying your hit probabilities, you can make smarter decisions about which moves to run and when to risk the big play. Stop blaming bad luck and start calculating your success.