Knowledge (Intelligence); Trained Only)

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The School of Athens - fresco by Raffaello Sanzio (1511) Raffaello Sanzio (1483–1520) The School of Athens - fresco by Raffaello Sanzio (1511) Raffaello Sanzio (1483–1520)

Like the Craft and Profession skills, Knowledge actually encompasses a number of unrelated skills. Knowledge represents a study of some body of lore, possibly an academic or even scientific discipline.

Below are listed typical fields of study.

The following list supplements the areas of expertise accessible to anyone with ranks in the Knowledge skill

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Anthropology and Archeology (ancient ruins and humanoids, ancient history, legends)


Architecture and engineering

Astrology and Astronomy (constellations, planetary movement, reading of omens, stellar phenomenon) (New)

Botany (plants, fungi, sentient plants)

Chemistry (properties of chemicals, compounds, organic materials)

Demonology (New)





Literature (epic poems, literary devices, mythology, plays, sonnets)


Martial Arts (fighting styles, combat)

Mathematics (algebra, calculus, geometry)

Music (instruments, hymns, reading music)


Nobility and royalty

Oceanography (underwater life, fishing, sailing, navigation)

Pathology and Physiology (disease, anatomy, birth processes, causes of death) Each creature type requires its own ranks, i.e., Pathology and Physiology of humanoids is vastly different to the Pathology and Physiology of dragons.


Physics (inertia, motion, acceleration, gravity)

The Planes

Sociology (cultures, traditions, city planning, streetwise)

Toxicology (organic and synthetic poisons, narcotics)

Undead (vampires, Zombies, skeletons)

Witchcraft (New)

The only other skill necessitating additional awareness is Decipher Script. Cryptographers, masters of secret codes, use this skill to measure the difficulty class required to decipher any encrypted message. They also use the skill to decipher encrypted messages. The exact specifics on adjudicating the creation and breaking of coded messages is thoroughly discussed under the cryptographer prestige class heading.


Answering a question within your field of study has a DC of 10 (for really easy questions), 15 (for basic questions), or 20 to 30 (for really tough questions).

In many cases, you can use this skill to identify monsters and their special powers or vulnerabilities. In general, the DC of such a check equals 10 + the monster's HD. A successful check allows you to remember a bit of useful information about that monster.

For every 5 points by which your check result exceeds the DC, you recall another piece of useful information.


Usually none. In most cases, making a Knowledge check doesn't take an action-you simply know the answer or you don't.

Try Again

No. The check represents what you know, and thinking about a topic a second time doesn't let you know something that you never learned in the first place.


An untrained Knowledge check is simply an Intelligence check. Without actual training, you know only common knowledge (DC 10 or lower).

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