pokemon showdown damage calculator

What this Pokémon Showdown damage calculator does

This tool gives you a practical damage range based on the same core structure used in mainline Pokémon damage calculations and mirrored in competitive simulators like Pokémon Showdown. You get the minimum and maximum possible damage rolls, percent damage against defender HP, estimated hit count to KO, and an approximate OHKO chance across the 16 random rolls.

If you are building teams for OU, VGC, Ubers, Monotype, or draft leagues, this is the exact kind of quick math you want before locking in EV spreads or move choices.

How damage is calculated (simplified Showdown-style formula)

The calculator uses this core structure:

• Base Damage: floor(floor(((((2 × Level) / 5) + 2) × Power × Atk / Def) / 50) + 2)
• Final Modifier: STAB × Type Effectiveness × Critical × Burn × Other × Random(0.85 to 1.00)
• Final Damage: floor(Base Damage × Final Modifier)

This captures the most important variables for day-to-day competitive prep. It is intentionally fast and transparent so you can test many scenarios in seconds.

How to use this calculator effectively

1) Start with final battle stats

Use the attacker and defender stats that will actually exist in battle. If you have Dragon Dance boosts, Intimidate drops, or item effects already reflected in your stats, enter those effective values directly.

2) Set your move power and modifiers

Enter move base power, then apply STAB, typing, burn, critical, and any other effects (weather, Light Screen/Reflect, item multipliers not already baked into your stat numbers).

3) Use HP percentage and KO ranges for decisions

Raw damage is useful, but percent range and KO thresholds are what win games. A move that does 42%–50% can be dramatically different from one that does 47%–55% once hazards and recovery are included.

Competitive tips: turn damage numbers into better plays

• Plan around guaranteed outcomes: prioritize lines with guaranteed 2HKO/3HKO instead of low-probability OHKOs.
• Check defensive benchmarks: test whether your spread survives key threats after Stealth Rock or chip.
• Compare item choices: test Life Orb vs Choice Specs/Band vs utility items by changing the modifier inputs.
• Respect random rolls: 16 damage rolls means “almost always” is still not “always.”
• Validate speed-control plans: damage output only matters if your Pokémon moves first often enough.

Frequently searched topics for damage calcs

Players commonly look up:

• pokemon showdown calc gen 9
• pokemon damage calculator with EVs and IVs
• best competitive damage ranges for OU
• how STAB and type effectiveness stack
• pokemon OHKO chance calculator

Important note on edge mechanics

This page is a high-quality quick calculator, not a full engine for every edge case in every generation. Certain mechanics (multi-hit move distributions, exact generation-specific critical rules, Parental Bond, spread move reductions, terrain interactions, and very specific ability/item exceptions) may require a full simulator-grade calc tool.

For most practical ladder and tournament prep, though, this calculator is excellent for fast, accurate decision support.