CK3 Database · Crusader Kings III, read from the game files · unofficial
CK3 Database answers as text
The interactive map and the planners on CK3 Database draw in the browser. Put /calc in front of the page's own address and its query, and the server answers with one paragraph, tables and links — no scripts needed. Built for assistants that read pages for a player (ChatGPT, Perplexity, Claude, Copilot) and for anyone who wants the answer without the page. Names work as well as keys. Add format=json for JSON.
The interactive map at a start date
Who holds a county and who is above them, a title's or realm's land, vassals, cultures and faiths, a region, or every culture or faith by counties — at the 867, 1066 or 1178 start. /calc/map is 1066.
Address: https://ck3db.com/calc/map/:date?… — example: https://ck3db.com/calc/map?c=Paris
c— a county: its key (c_ile_de_france), its name or one of its baronies' names (Paris)t— a de jure duchy, kingdom or empire by key or name (k_france or France), or a realm of that date, titular ones too (e_hre or Holy Roman Empire)r— one of the game's geographical regions (key or name)m— culture or faith: every culture or faith on the map by counties
Ruler designer points
Customization points of a designed ruler — age, base skills, traits and generated children — against the 400-point achievements limit.
Address: https://ck3db.com/calc/ruler-designer?… — example: https://ck3db.com/calc/ruler-designer?a=25&t=Genius,Brave,Diligent
a— age, 16–100 (default 25)s— base skills diplomacy.martial.stewardship.intrigue.learning.prowess, e.g. 10.10.10.5.5.5t— traits, keys or names joined by . or , (brave.genius or Brave,Genius)c— generated sons.daughters, e.g. 1.1
Culture builder (hybrid or divergent culture)
The prestige cost of each tradition for an ethos and heritage, starting from a culture's own set or a list of traditions.
Address: https://ck3db.com/calc/tools/culture-builder?… — example: https://ck3db.com/calc/tools/culture-builder?c=Norse
c— the culture to start from (key or name)e— ethos key (default: the culture's)h— heritage key (default: the culture's)p— traditions, keys or names joined by , (default: the culture's starting set)x— DLC features you don't own, joined by ,
Faith builder (reforming a faith)
The piety cost of a reformed faith — each tenet and changed doctrine — with the fervor discount.
Address: https://ck3db.com/calc/tools/faith-builder?… — example: https://ck3db.com/calc/tools/faith-builder?f=Catholicism&t=Communion,Struggle and Submission,Monasticism
f(required) — the faith to reform (key or name)t— tenets, keys or names joined by , (default: the faith's own)d— doctrines to change, group.doctrine pairs joined by ,fv— fervor in % (default: the game's base)x— DLC features you don't own, joined by ,
Data: Crusader Kings III 1.20.1.2 (Steam build 26046173), read from the game's files. Unofficial; not affiliated with Paradox Interactive.