Magic item resizing and weight


Rules Questions

Dark Archive

most worn magic item that aren't weapons or armor resize to fit the wearer.

Does that mean if a small sized creature puts on a belt of dex +2, for example, the belt now weighs less? or is the weight of a magic item unaffected?

I know items made for small characters weigh less, but is that also true for resizing magic items since they aren't specifically made for small size?

Liberty's Edge

Yes, they would weigh less. I am not sure if it was in a post by SKR or an actual faq about armor and wildshape, but the idea is that you stay at the same level of encumbrance if the gear works, if it is subsumed into your new form it doesn't encumber you.

Found it:

FAQ wrote:


Wild armor and other transforming armor: When I use a wild armor and gain the armor’s benefits, what restrictions, if any, apply to me? In general, when I transform with a polymorph effect and some of my gear melds into the form, what restrictions do I have for melding with large amounts of heavy gear? What about other types of transforming armor?

If you were in medium or heavy load from encumbrance before transforming, you continue to take those penalties in your melded form. Otherwise, ignore the weight of melded items and calculate your encumbrance in your polymorphed form entirely based on non-melded items. When wearing melded armor and shields, if you gain no benefit from the melded armor, you still count as wearing an armor of that type, but you do not suffer its armor check penalty, movement speed reduction, or arcane spell failure chance. If you do gain any benefits (as with the wild property), then you do suffer the armor check penalty, movement speed reduction, and arcane spell failure chance. This also applies to all other situations where you or an armor transform: you always count as wearing an armor of that type, and if you gain any benefit at all from the armor (such as mistmail), you apply the armor check penalty, movement speed reduction, and arcane spell failure chance.

Not as useful as I thought to reply to your question.

CRB wrote:
If your new form does not cause your equipment to meld into your form, the equipment resizes to match your new size.

If your gear resizes but its weight doesn't change, becoming Tiny or smaller will make you unable to move. It seems against the logic of the spell.

BTW: armor and weapon resize too.

The Exchange

Unless I missed a rule somewhere, it varies by equipment type. In the specific case of a Belt of Incredible Dexterity +2, the weight would probably not change.

Weapons and armor weigh half as much for small creatures as for medium creatures. (CRB pages 144 and 150.) Certain other items weigh 1/4 as much (marked with a superscript "1" on Table 6-9 on page 158.) If it's not a weapon, armor, or on that table, it doesn't change.

There is no special rule for magical items as a whole. There's certainly room to argue that a "belt" is clothing, and therefore should be 1/4 weight. But there's also room to argue that a magic item requires a certain amount of "magical materials" to "hold the magic" and that's where the weight is. I mean otherwise every caster would just buy small handy haversacks all the time. Rather than argue about what is and isn't covered, most people just say the weight of magic items doesn't change unless it's armor or a weapon. That's the way HeroLab (which I am not suggesting is the final word on rules) handles it.

Liberty's Edge

The Handy haversack and the Bag of holding have a fixed weight regardless of size and content because the item says they have a fixed weigth.

Dark Archive

Diego Rossi wrote:


BTW: armor and weapon resize too.

Do you have a source on that? because that would make oversized magic weapons impossible, and render the spell resize item useless.

im talking about
Size and Magic Items
When an article of magic clothing or jewelry is discovered, most of the time size shouldn’t be an issue. Many magic garments are made to be easily adjustable, or they adjust themselves magically to the wearer. Size should not keep characters of various kinds from using magic items.

There may be rare exceptions, especially with race-specific items.

While wearable wondrous items typically resize themselves to fit a creature trying to wear them, the situation becomes a little more complicated if the creature simply lacks the requisite appendage or body part.

but as far as i know magic weapons and armor don't auto resize

i feel like if weapons/armor did resize for free that there would inevitably be the argument to cause a massive system break somewhere with material weight value or something.

like why would you ever not craft an item at diminutive size for cost/required material amount reasons, then let it magically resize?
any item that cost based on weight is severely thrown off

Liberty's Edge

I misread your question. I thought you were speaking of resizing because magic size changes, through polymorph or size alteration magic.

You instead are speaking of items adapting to the size of the creature wearing them.

My bad.

Weapon and armor don't resize to adapt to a different-sized user.

CRB wrote:

Size and Magic Items

When an article of magic clothing or jewelry is discovered, most of the time size shouldn’t be an issue. Many magic garments are made to be easily adjustable, or they adjust themselves magically to the wearer. Size should not keep characters of various kinds from using magic items.
There may be rare exceptions, especially with race specific items.

Armor and Weapon Sizes: Armor and weapons that are found at random have a 30% chance of being Small (01–30), a 60% chance of being Medium (31–90), and a 10% chance of being any other size (91–100).

As I see it:

If the item adapts magically to the new wearer site, its weight should change.

If the item is adjusted to the new wearer size, its weight should change (but then adapting it again for a larger wearer should be a problem, removed parts don't regrow).
If the item is adapted, the change in weight will not always give it the same weight as an item produced for a creature of that size.

You need GM input on a case-by-case basis.

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