Combat formulas and shard limits
From UO:PvE Wiki
Quick access to exact formulas, casting costs, equipment caps, difficulty and loot rules.
Development source reviewed on 29 October 2026. In-game availability is unverified.
Combat and character formulas#
- Melee hit chance: skills, HCI and DCI
- Swing speed, stamina and SSI
- Weapon damage: calculation order and caps
- Armor, elemental resistance and direct damage
- Parrying with shields and melee weapons
- Spell damage: rolls, Intelligence, SDI and resistance
- Resisting Spells: resistance floors and resist rolls
- Casting success and skill thresholds
- Faster Casting, FCR and cast delay
- LRC, LMC and resource consumption
- Stats, health, stamina and mana limits
- Equipment tiers and effective caps
- The full difficulty formula
- Exact ordinary loot budgets
- Crafting success and exceptional quality
Reading formulas#
Values describe the configured Endless Journey branch and the shard’s custom changes. Integer truncation, ordering and caps matter; each linked article explains the sequence and exceptions.
The acronym LCD does not identify a standalone item property in the audited code. For casting delay, see Faster Casting and FCR; for resource reduction, see LRC and LMC. Hit Lower Defense is a separate combat effect.
Source notes
Show 2 references
These references identify the reviewed shard files. Source presence does not establish live availability.
Projects/UOContent/Items/Weapons/BaseWeapon.cs:1
Weapon combat formulasProjects/UOContent/Spells/Base/Spell.cs:1
Shared casting formulas
Category: Character & combat