What is the size of the cone area of effect for Detect Magic?


Rules Questions


The rules say it's a cone shape that goes for 60ft. However, it doesn't say how wide the cone is, what the radius is at 60ft.

I would never sit there and do the math to figure out at 10 ft how wide the radius is or anything like that, that would be overkill, but I believe the question is relevant in cases where a Wizard might say, I use Detect Magic on this whole 100ft wall, or I Detect Magic for the whole left side of the room.

Thank you for reading my question!


Cones are always 1/4 circles.

If your caster is 40ft from the wall, the diagonals are 60ft long.
The cone-width at the wall would be 80ft.


Brf wrote:
Cones are always 1/4 circles.

Googling (Images)"60 ft cone template" you will give you graphical representations of cones laid out on a grid. Sorry I can't send you a link - blocked from work.


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Scroll up from here and you'll see examples of a 30-foot cone. You should be able to extrapolate from there. I believe the PFSRD site may have a page with larger templates on it.

But yes, Brf is correct - a cone is effectively a 90-degree wedge (or a quarter-circle) extending at its further point out to the range defined by the spell. A rough measurement is to choose the squares directly in front of and to the left or right of the character and count out the range distance in a line from there, then a rough diagonal between those two points.


Thank you for answering my question despite it being so obvious! I've seen that chart before and I always equated it to a flat sort of burst, but not a cone shape. Now I know all cone shape spells use this shape template. Thank you everyone.

Silver Crusade

Cone-shaped spells are 3 dimensional. They are just usually laid out on a flat plane. However, if you want to get all of the area on your level, you'll only get half the height of the cone.

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