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D4 Tools

Lightweight, clutter-free, web-based, open-source tools for Diablo 4 to calculate stats like damage or defense.

Common features

  • Super lightweight design with no external dependencies (<100kb total size)
  • Store calculators in your browser cache (localStorage) and export as JSON files
  • Open multiple calculators side by side
  • Disable properties temporarily (to quickly see changes)
  • Drag & drop sorting
  • Responsive design for large (desktop) and small (mobile) screens
  • Light/dark mode

Damage Calculator

The D4 Damage Calculator is a useful tool to assess your build, evaluate your damage and find ways to optimize it.
It combines all D4 damage buckets like weapon damage, main stat (str, dex, int, wil), additive damage ([+]%), multiplicative damage ([x]%) and more to calculate your total damage per hit. In addition it supports critical hit, vulnerable effect and overpower damage (including HP and fortify). To compare different variants of your build and test changes you can open multiple calculators next to each other and easily store, load and export the data (as JSON files).

URL: https://bytemind-de.github.io/apps/d4/damage.html

Typical questions to answer with this calculator:

  • What is the total damage per hit I can expect when using skill A with a fully charged aspect B and overpower + critical hit?
  • What is better with my current gear, +50% critical damage or 80 more strength?
  • What is the average DPS when I switch from 2h to 1h weapon?

Ideas to improve it

  • Better support DoT (damage-over-time) skills
  • Add predefined properties (skills, passives, glyphs, paragon nodes etc.) for the user to select (UPDATE: added BETA in v0.13.1)
  • Add damage groups to automatically switch between close/distant/stunned etc. (UPDATE: added some core types in v0.13.0)
  • Read the data from your actual account via some Blizzard API (d4armory seems to be able to do it, but how???)

Known bugs / quirks

  • DPS is a complex topic and often depends on multiple other factors that currently cannot be accounted for like the number of enemies in range, area of attack, secondary hits and more.
  • The calculations do not directly support DoT damage right now, but you should be able to adjust your base damage and attack speed to find the correct damage values.
  • Stored data will be lost anytime the browser cleans up its local-storage, so make sure to export your data often!

Screenshots

Damage Calculator S2 Damage Calculator S2

Defense Calculator

The D4 Defense Calculator is a tool to evaluate your defense and determine your "effective" life against certain attacks. It will also calculate your armor required to reach the 85% DR cap against a specific monster level.

URL: https://bytemind-de.github.io/apps/d4/defense.html

Typical questions to answer with this calculator:

  • What is my 'effective' life when defending vs bleeding enemies that do physical damage in close range?
  • What is better with my current gear, 4% more life or 3% damage reduction?

Ideas to improve it

  • Add damage groups to be able to calculate defense for multiple attack types at the same time (close, distant, fire, poison, etc.)
  • Take dodge into account (or at least show it as well)
  • Simplify handling of rubies and paragon nodes (% life), so you don't have to enter every single one

Known bugs / quirks

  • There might be slight rounding errors in the result, because the game often doesn't give you the full values (e.g. Doombringer is actually 41.44% life not 41.4% etc.)
  • Stored data will be lost anytime the browser cleans up its local-storage, so make sure to export your data often!

Credits

Screenshots

Defense Calculator S2 Beta