Weight

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v50.14 · v0.47.05 This article is about the current version of DF. Note that some content may still need to be updated. More Info · V

Weight, or sometimes more correctly termed mass, is an item property, and is measured in the unit Γ, also sometimes known as urists, or more commonly as the kilogram, its equivalent real-life unit.

Weight is largely used by the game to determine how fast someone or something should move, due to encumbrance effects and carry weight restrictions; to calculate damage, since object mass factors into impact momentum; and to some extent to make temperature calculations, as mass factors into heat capacity. Note that, for DF, weight and mass are currently indistinguishable because, as it stands, DF gravity is uniform both across the whole universe and from world to world and buoyancy isn't implemented.

Weight is displayed as a quantity associated with an item. Weight calculation is not entirely straightforward, since each item category — or sometimes even individual items — have their own formula for determining weight.

Weight Calculation

The general form for calculating weight in DF is to take the material density (as found in the raws) multiplied by the item's volume.

Weight (in Γ) = Density (in kg/m³) * Volume (in cm³) / 1,000,000 (cm³/m³)

Internally, all custom volume/capacity numbers are rounded down to the nearest multiple of 10 - thus, if you define a tool with [SIZE:15], it will actually behave as if you had specified [SIZE:10].

An item's volume is also used to determine workshop clutter as well as how many items can fit into a container.

Item Type	Volume	Capacity	Notes
Bars	6000
Cut gems	200
Blocks	6000
Rough gems	2500
Mined stone	100000
Wood logs	50000
Door	30000
Floodgate	30000
Bed	30000
Chair	30000
Chain	5000
Flask	1000	1800
Goblet	1000	1800
Instrument	4000
Toy	1000
Window	20000
Cage	30000	60000
Barrel	20000	60000
Bucket	3000	6000
Animal trap	3000	30000
Table	30000
Coffin	30000	60000
Statue	60000
Corpse	Special		Based on the size of the corpse and what it's made of.
Weapon	SIZE
Body armor	?		Based on UBSTEP, LBSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it.
Shoes	?		Based on UPSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it.
Shields	?		Based on UPSTEP and the race that crafted it.
Helms	?		Based on COVERAGE, LAYER_SIZE, and the race that crafted it.
Gloves	?		Based on UPSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it.
Box	20000 or 1000	60000	Bags have a volume of 1000, boxes/chests/coffers have a volume of 20000.
Bin	15000	60000
Armor stand	10000	60000
Weapon rack	10000	60000
Cabinet	30000	60000
Figurine	1000
Amulet	500
Scepter	3000
Ammo	SIZE
Crown	1000
Ring	50
Earring	30
Bracelet	200
Large gem	50
Anvil	10000
Body part	Special		Based on the size of the body part and what it's made of.
Remains	2000
Meat	2000
Fish	2000
Unprepared fish	2000
Live vermin	Special		Based on creature's adult size.
Tame vermin	Special		Based on creature's adult size.
Seeds	100
Plant	1000
Leather	5000
Leaves	50
Thread	ceil(Dimension/50)		200 for freshly extracted/gathered thread.
Cloth	ceil(Dimension/50)		300 for freshly woven cloth
Totem	5000
Pants	?		Based on LBSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it
Backpack	5000	30000
Quiver	3000	12000
Catapult parts	20000
Ballista parts	20000
Siege ammo	30000
Ballista arrow head	10000
Mechanisms	20000
Trap component	SIZE
Drink	2000
Powder	2000
Cheese	1000
Prepared meal	1000
Misc. liquid	600
Coin	10/16
Glob	600
Small rock	2000		As thrown by adventurers.
Pipe section	30000
Hatch cover	10000
Grate	10000
Quern	30000
Millstone	30000
Splint	2000
Crutch	2000
Traction bench	30000
Orthopedic cast	2000
Tool	SIZE	CAPACITY
Slab	60000
Egg	Special		Presumably the caste's EGG_SIZE.
Book	1000
Sheet	10

"Weight" in other Languages Dwarven: âl Elven: eba Goblin: deslo Human: ketas