pokemon showdown calculator

Pokémon Showdown Damage Calculator

Use this quick calculator to estimate min/max damage, damage percentages, and KO odds using the core Pokémon damage formula.

Attacker Level

Move Base Power

Move Category

Defender HP

Attacking Stat (Atk/SpA)

Defending Stat (Def/SpD)

STAB Multiplier

Type Effectiveness

Critical Hit

Burn Modifier (Physical only)

Weather Modifier

Spread Move Modifier

Other Modifier (items, abilities, terrain, screens, etc.)

Enter your values and click Calculate Damage to see the range.

Note: This is a streamlined Showdown-style calculator and does not model every generation-specific rule interaction.

What is a Pokémon Showdown calculator?

A Pokémon Showdown calculator is a tool that estimates how much damage one Pokémon does to another under specific conditions. Competitive battles are often decided by tiny margins, so understanding whether a move is an OHKO, 2HKO, or just short can change your entire line of play.

Instead of guessing, a damage calc lets you test realistic scenarios: boosted attacks, defensive walls, weather teams, status conditions, and type matchups. This is one of the fastest ways to improve in singles and doubles formats.

How this calculator works

Core inputs

Level and Base Power determine base damage scaling.
Attacking Stat and Defending Stat represent final in-battle stats (Atk/SpA vs Def/SpD).
Defender HP converts raw damage into useful percentage ranges.

Battle modifiers

STAB (Same Type Attack Bonus): usually 1.5×, or 2× with Adaptability.
Type Effectiveness: from immunity (0×) to double super-effective (4×).
Critical Hit: modeled as 1.5×.
Burn: applies a 0.5× penalty to physical damage in this tool.
Weather and Spread Modifier: useful for rain/sun and doubles calculations.
Other Modifier: combine remaining effects like items, abilities, screens, and terrain.

Understanding your results

After you calculate, you get a min-max damage range based on the random damage roll (85% to 100%). You also get percentage damage, KO chances (1-hit, 2-hit, and 3-hit), and a rough expected number of hits to KO.

The most practical metric is usually minimum damage. If your minimum damage secures a 2HKO, you can play aggressively. If only high rolls secure the KO, you may need hazards, chip damage, or a stronger line.

Practical competitive tips

1) Build around thresholds, not max rolls

Many players overestimate damage because they remember the best roll. Team consistency improves when you plan around low rolls and guaranteed outcomes.

2) Check defensive benchmarks while team building

Before locking in EV spreads, test common threats and ask:

Can this spread avoid a guaranteed 2HKO?
Does it live a boosted hit after Stealth Rock?
Can it survive long enough to recover or pivot?

3) Use chip damage intelligently

Entry hazards, Rocky Helmet, weather chip, and status can all convert borderline rolls into clean KOs. If your calculator result is close, a tiny amount of chip often changes the game.

Common mistakes when using a damage calc

Using base stats instead of final battle stats.
Forgetting STAB or using the wrong type effectiveness multiplier.
Applying burn to special attacks (burn only affects physical in this simplified model).
Ignoring field state such as weather, terrain, and spread penalties in doubles.
Treating a high-roll OHKO as guaranteed damage.

Final thoughts

A good Pokémon Showdown damage calculator is less about flashy numbers and more about decision quality. It helps you identify safe switches, evaluate win conditions, and avoid risky assumptions. Use it while laddering and during team prep, and your battle planning will become sharper very quickly.