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# DF2012:Weight

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 * Volume / 100,000

An item's volume is also used to determine workshop clutter as well as how many items can fit into a container. Standard containers (bins, barrels, and bags) have a capacity of 3000 units, while tools have a capacity equal to 1/10 of their CONTAINER_CAPACITY value.

Item Type Volume Notes
Bars 600
Cut gems 20
Blocks 600
Rough gems 250
Mined stone 10000
Wood logs 5000
Door 3000
Floodgate 3000
Bed 3000
Chair 3000
Chain 500
Goblet 100
Instrument 400
Toy 100
Window 2000
Cage 3000
Barrel 2000
Bucket 300
Animal trap 300
Table 3000
Coffin 3000
Statue 6000
Corpse Special Based on the size of the corpse and what it's made of
Weapon SIZE / 10
Body armor (layer size/ material size)/
1 010
Based on UBSTEP, LBSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it
Shoes layer size/ 7 500 Based on UPSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it
Shields 1/ 100 000 Based on UPSTEP and the race that crafted it
Helms layer size/ 60 000 Based on COVERAGE, LAYER_SIZE, and the race that crafted it
Gloves 1/ 100 000 Based on UPSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it
Box 2000 or 100 Bags weigh 100, boxes/chests/coffers weigh 2000
Bin 1500
Armor stand 1000
Weapon rack 1000
Cabinet 3000
Figurine 100
Amulet 50
Scepter 300
Ammo SIZE / 10
Crown 100
Ring 5
Earring 3
Bracelet 20
Large gem 5
Anvil 1000
Body part Special Based on the size of the body part and what it's made of
Remains 200
Meat 200
Fish 200
Unprepared fish 200
Live vermin Special Based on creature's adult size
Tame vermin Special Based on creature's adult size
Seeds 10
Plant 100
Leather 500
Leaves 5
Cloth ceil(Dimension/500) 30 for freshly woven cloth
Totem 500
Pants layer size/ 5 190 Based on LBSTEP, COVERAGE, LAYER_SIZE, and the race that crafted it
Backpack 500
Quiver 300
Catapult parts 2000
Ballista parts 2000
Siege ammo 3000
Mechanisms 2000
Trap component SIZE/10
Drink 200
Powder 200
Cheese 100
Prepared meal 100
Misc. liquid 60
Coin 1/16
Glob 60
Small rock 200 As thrown by adventurers
Pipe section 3000
Hatch cover 1000
Grate 1000
Quern 3000
Millstone 3000
Splint 200
Crutch 200
Traction bench 3000
Orthopedic cast 200
Tool SIZE/10
Slab 6000
Egg Special Presumably the caste's EGG_SIZE
Book 100