Sanctuary arithmetic // model reviewed 2026-10-08
Your build's damage, in numbers you can audit.
The community bucket model as a free calculator: every input maps to a stat-screen number, every formula is published. No black boxes, no sign-up.
Blizzard's exact formulas are unpublished and shift between seasons — so this model is
parameterized and labeled [VERIFY], never asserted as truth. Read the methodology →
The toolkit
⚔️
Damage Calculator
The bucket model: weapon, main stat, crit, vulnerable and additive damage — expected hit numbers.
Flagship 🧿Stat Priority Comparator
Is +18% additive better than +20% crit damage? Marginal-gain math for your exact build.
Calculator 🛡️Toughness Calculator
Effective HP from life, armor and resistances — how many hits you actually survive.
Calculator 🕯️Paragon Planner
Levels to your target, XP needed, and days of grinding at your real pace.
CalculatorWhich tool do I need?
| Your question | Use |
|---|---|
| "How hard does my build actually hit?" | Damage Calculator |
| "This affix or that affix — which wins?" | Stat Priority Comparator |
| "Why am I getting one-shot in the Pit?" | Toughness Calculator |
| "How long to paragon 260?" | Paragon Planner |
Why D4 DAMAGE
- Transparent by design. Every formula is on the methodology page — the antidote to disputed planner numbers.
- No ads, no account, no paywall. The tools are the offering.
- All client-side. Your build numbers never leave your browser.
- Season-proof honesty. Constants are editable [VERIFY] flags, not fake confidence.