The Witcher Build and Combat Calculator

Level

Vitality

Base Sword Damage

Attacks / Second

Crit Chance %

Crit Damage %

General Damage Bonus %

Potion Attack Bonus %

Oil Bonus %

Enemy Damage Reduction %

Your Armor Reduction %

Sign Intensity %

Base Potion Duration (s)

Potion Duration Bonus %

Current Toxicity

Toxicity Limit

Potion Toxicity

Decoctions (count)

Each Decoction Toxicity

Oil Matches Enemy

The table shows your last calculation. Use Export to download.

Level	Base Dmg	APS	Crit% / CritDmg%	Non‑Crit Dmg	E[Hit]	DPS	Vitality	Eff. Vitality	Potion Dur (s)	Toxicity After	Over Limit?
No calculations yet. Enter inputs and press Compute.

Multipliers: Dmg Mult = (1 + General%) × (1 + PotionAtk%) × OilMult where OilMult = 1 if oil not matched, else 1 + Oil%.
Non‑crit Damage: NonCrit = BaseDmg × DmgMult × (1 − EnemyDR).
Expected Damage per Hit: E[Hit] = NonCrit × [ (1 − Crit%) + Crit% × (1 + CritDmg%) ].
DPS: DPS = E[Hit] × AttacksPerSecond.
Effective Vitality (approx): EffHP ≈ Vitality ÷ (1 − ArmorDR).
Potion Duration: Duration = BaseDuration × (1 + DurationBonus%).
Toxicity After Use: ToxicityAfter = CurrentTox + PotionTox + Decoctions × EachDecoctionTox; Over‑limit if ToxicityAfter > ToxicityLimit.
Quen Absorb (simple): Absorb% ≈ SignIntensity% (demonstrative only, tune as desired).

These formulas are simplified approximations intended for theorycrafting convenience, not exact in‑game reverse‑engineering.

Preset scenarios show how inputs influence results.

Scenario	Level	Base Dmg	APS	Crit% / CritDmg%	Non‑Crit Dmg	E[Hit]	DPS	Potion Dur (s)	Toxicity After
Early Game Fast Attacks vs. Bandits	8	165	2.00	12.0 / 40.0	194.9	204.3	408.5	60.0	25.0/100
Mid Game Thunderbolt + Necrophage Oil	18	320	1.90	18.0 / 60.0	541.2	599.6	1,139.3	72.0	70.0/100
Late Game Crit Build vs. Armored	35	540	1.70	38.0 / 110.0	599.5	850.1	1,445.2	78.0	110.0/100

Oil bonus applies only when matched to the enemy type.
Enemy reduction represents armor/resistances; higher values cut your damage more.
Consider potion duration bonuses from gear and alchemy skills.
Watch toxicity when stacking decoctions and potions.