Genshin Impact Tool · Free · Offline
Genshin Impact Damage Calculator
Plug in your build — get expected Vaporize/Melt hit damage with crit weighting, defense, resistance and EM scaling. No guessing, no spreadsheets.
Team DPS Comparison
Save up to 2 builds side-by-side to compare expected damage.
How the math works
Genshin damage is a chain of independent multipliers, which is why one weak link (enemy resistance, defense from fighting up-level bosses, missing reaction) can cost you more than a whole artifact set. The calculator multiplies your attack by your talent's scaling, then applies your damage-bonus bucket, the crit factor, the defense multiplier from both combatant levels, the resistance curve of the enemy, and finally any amplifying reaction — Vaporize or Melt — with your Elemental Mastery on top.
The EM curve is the part most players misjudge: Mastery bonuses stack on top of the 1.5×/2.0× base reaction multiplier, so 200 EM is worth roughly 39% extra and 400 EM roughly 56%. That makes EM sands worth real math instead of vibes on every reaction carry — Halve-level defense penalties hit just as hard: a level-90 character against level-95 content loses nearly half its damage to defense before resistance applies, which is why enemy level is one of the biggest levers in the calculator.
All formulas match the community-documented damage model used by theorycrafting libraries — single-hit amp-reaction scope only, no transformative-reaction or multi-hit ICD modeling. For leveling and pull planning around your new damage numbers, see our Genshin beginner guide and banner pull strategy.
Frequently asked questions
Does this calculator need an account or send data anywhere?
No. All math runs in your browser — nothing is transmitted, so it works offline and never touches your game account.
Which damage formula does it use?
The standard community-verified formula: ATK × talent multiplier × (1 + damage bonus%) × crit factor × enemy defense multiplier × enemy resistance multiplier × reaction multiplier, with Elemental Mastery scaling for Vaporize and Melt.
How does Elemental Mastery change Vaporize and Melt?
Amplifying reactions multiply by 1.5× or 2.0× depending on trigger order, then gain a bonus of 2.78 × EM / (EM + 1400). 200 EM adds roughly 39% on top of the base reaction multiplier.
Why does enemy level matter so much?
Enemy defense scales with level: attacking a level 95 boss with a level 80 character roughly halves your damage versus a same-level target, before resistance is even applied.
Example: Vaporize hit calculation
2200 ATK, 400% talent, 90% DMG%, 70% CR / 160% CD, lvl 90 vs lvl 93, 10% res, 220 EM, Vaporize 2.0×. Result: expected 89,432 dmg, non-crit 52,607, crit 134,141. Def mult 96.6%, res mult 90.9%.