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Formulas

Every formula in one place. L is a level, ⌊x⌋ rounds down and ⌈x⌉ rounds up. "Economy speed", "lore speed" and "march speed" come from the world's charter.

Costs and times

What Formula
Building cost at level L base cost × factor^(L − 1), rounded down
Lore cost at level L base cost × factor^(L − 1) (factor 2 unless noted; Cartography rounds to 100)
Mana needed at level L base mana × factor^(L − 1)
Raze fee cost of that level × (1 − 4% × Stormcalling)
Build time (h) (iron + runestone) ÷ (2,500 × max(4 − L ÷ 2, 1) × (1 + Builders' Guild) × 2^Golem Foundry × economy speed) × (1 − kindred reduction)
Study time (h) (iron + runestone) ÷ (1,000 × (1 + linked Mage Tower levels) × lore speed) × (1 − study reduction, at most 75%)
Muster time per piece (h) (iron + runestone) ÷ (2,500 × (1 + Muster Hall) × 2^Golem Foundry × economy speed) × (1 − kindred reduction)
Finish now max(10, ⌈minutes left × 6⌉) Fateshards
Halve max(10, ⌈minutes left ÷ 2 × 6⌉) Fateshards

Times are never shorter than 1 second. Kindred reductions are capped at 50%.

Production

What Per hour, before bonuses
Iron Mine 30 × L × 1.1^L
Runestone Quarry 20 × L × 1.1^L
Aether Condenser 10 × L × 1.1^L × (1.44 − 0.004 × highest temperature)
Mana used by a mine or quarry 10 × L × 1.1^L
Mana used by a condenser 20 × L × 1.1^L
Mana used by a Delver Golem 50
Ley Tap mana 20 × L × 1.1^L
Aether Furnace mana 30 × L × (1.05 + 0.01 × Mana Theory)^L
Aether Furnace burn 10 × L × 1.1^L aether
Sun Prism mana ⌊(highest temperature + 140) ÷ 6⌋
Tithe 30 iron and 15 runestone

Yield = tithe × economy speed + mine output × throttle × min(1, mana produced ÷ mana required) × (1 + yield bonuses + golem bonus) × economy speed

Mana produced = (Ley Tap + Aether Furnace + Sun Prisms) × throttle × (1 + mana bonuses)

Golem bonus = min(50%, 0.02% × min(golems, 8 × (Iron Mine + Runestone Quarry + Aether Condenser levels)))

Vault capacity = 5,000 × ⌊2.5 × e^(20 × L ÷ 33)⌋ × (1 + storage bonuses)

Plots, holds and slots

What Formula
Stronghold plots site plots + world bonus plots + Earthshaper plots + grants
Earthshaper plots 5 per odd level + 6 per even level
Skyhold plots min(⌊(span ÷ 1,000)²⌋, 1 + 3 × Sky Keep) + Sky Grants
Strongholds held 1 + ⌈Cartography ÷ 2⌉
Quest slots ⌊√Cartography⌋ (+1 Marshal, +2 Wayfarer)
Longest quest max(1, Cartography) hours
Banners 1 + Banner Command (+2 Marshal, +2 Warlord, +1 full council)
Spell Battery slots 10 × level (Counterspell 1, Meteor Spell 2)

Marching

What Formula
Distance, same site 5
Distance, same province 1,000 + 5 × |Δ site|
Distance, same continent 2,700 + 95 × |Δ province| (wrapping in a round world)
Distance, other continent 20,000 × |Δ continent| (wrapping in a round world)
Unit speed base speed × (1 + drive bonus × drive lore level + other bonuses)
Host speed the slowest unit's speed
One-way time (s) (10 + (35,000 ÷ pace) × √(10 × distance ÷ speed)) ÷ march speed
March aether ⌈Σ units × base aether × distance ÷ 35,000 × (pace ÷ 100 + 1)² × consumption⌉ + 1
Camp aether ⌈Σ units × base aether ÷ 10 × hours × consumption⌉
Unit load base load × (1 + 5% × Planar Lore + other bonuses)

Drive bonuses: Pathfinding 10%, Beastmastery 20%, Leystriding 30% per level. Consumption: the world's aether consumption × 0.75 for a Warlord × (1 − kindred march aether reduction).

Battle

What Formula
Might might × (1 + 10% × Weaponsmithing + kindred)
Ward ward × (1 + 10% × Warding + kindred)
Fortitude (iron + runestone) ÷ 10 × (1 + 10% × Armoursmithing + kindred)
Glancing blow might < 1% of the target's full ward
Rout chance 1 − fortitude left ÷ full fortitude, when hit below 70%
Flurry chance (v − 1) ÷ v per extra strike
Plunder share 100% outlaw; 50% dormant (75% Wayfarer); 75% if renown ≥ half the attacker's; else 50%
Spoils spoils share × (iron + runestone) of each destroyed unit
Fortifications rebuilt 70% chance each (≤ 100 lost), else 60–80%; Master Mason restores half of the rest
Skyhold chance min(20%, 1% per 100,000 spoils)
Skyhold span random from 2,000 + 300 × chance to 3,000 + 300 × chance paces
Healers' Lodge share min(45%, 30% + 1% × (L − 1)) × (1 + kindred)
Lodge restoration time max(10 min, 2 h ÷ L ÷ economy speed)
Ordered retreat attackers ≥ 5 × defenders (3 × with the Marshal), strength = Σ √(might × (fortitude + ward))
Retreat fee 2 × Σ units × base aether
Reavers' take up to 30% of the new spoils

Scouting, spells and Skyholds

What Formula
Effective ravens ravens ± (difference in Spycraft)², + when yours is higher
Interception chance min(100%, ravens × units stationed ÷ 4 × 2^(their Spycraft − yours) %)
Meteor range 5 × Beastmastery − 1 provinces, same continent
Meteor flight 30 s + 60 s per province
Meteor damage 12,000 × (1 + 10% × Weaponsmithing) per spell
Scrying range (level² − 1) provinces (× 1.2 for a Wayfarer)
Scrying cost 5,000 aether
Waygate cooldown 3,600 s × max(0.5, 1 − 0.1 × (L − 1)) ÷ economy speed
Sunder fall chance (100 − √span) × √Colossi %
Sunder Colossi loss √span ÷ 2 %

Quests and kindreds

What Formula
Quest points min(cap, Σ units × (iron + runestone) × 5 ÷ 1,000)
Picked clean max(30%, 100% − 10% × (quests in that province in 24 h − 3))
Treasure points × tier factor × picked clean × (1 + finds) (×2 Rangers, ×1.5 × economy speed Wayfarer) ÷ (1 iron, 2 runestone, 3 aether)
Population cap 50 + 200 × L × 1.15^L (50 with no dwelling)
Food 30 + 110 × L × 1.16^L per hour
People fed food ÷ 0.5
Population growth 2% of the cap per hour × economy speed × (1 + growth bonuses)
Artisan cap 300 × L × 1.12^L
Master cap 50 × L × 1.12^L
Standing the highest S (up to 10) with favour ≥ 1,000 × S²
Art bonus value × level × (1 + 2% × standing)

Renown and honour

What Formula
Renown resources invested ÷ 1,000
Fledgling renown < 50,000, not dormant, not an oathbreaker
Protected from lords with more than 5 × the fledgling's renown
Honour won renown destroyed, if the foe has ≥ half your renown
Honour lost renown destroyed (at least 1), if an active foe has < a fifth of your renown