DF2014:Weight
This article is about the current version of DF. 
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 reallife 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[edit]
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/m^{3}) * Volume (in cm^{3}) / 1,000,000 (cm^{3}/m^{3})
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^{1}  
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^{1}  
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  
Plant growths  50  
Thread  ceil(Dimension/50)^{1}  Freshly gathered/produced thread has a dimension of 15000 and thus has a volume of 300  
Cloth  ceil(Dimension/50)^{1}  Freshly woven cloth has a dimension of 10000 and thus has a volume of 200  
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^{1}  
Drink  2000  
Powder  2000  
Cheese  1000  
Prepared meal  1000  
Misc. liquid  600  
Coin  10/16^{1}  
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^{1}  CAPACITY^{1}  
Slab  60000  
Egg  Special  Presumably the caste's EGG_SIZE.  
Book  1000  
Sheet  10 
 ^{1}  As noted above, all values are rounded down to the nearest multiple of 10, down to a minimum value of 1.
"Weight" in other Languages
