Mass
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Mass is a stat: The physical mass of an object. Its minimum allowed value is 0 kg. Its default value is 1 kg.
How heavy an object is to carry in a caravan or a transport pod.
Take note that for stackable items (like resources), the displayed mass corresponds to a single item, not the whole stack. Thus a full stack of 75 steel (mass equals 0.5 kg each) actually weights 32.5 kg in total.
Calculating Mass[edit]
 | This section is suggested to be rewritten. Reason: Verify that all of the factors that apply to pawns apply to corpses as well. You can help the RimWorld Wiki by improving it. |
For pawns and corpses, the base mass is multiplied by the body size (which is first determined by a base body size, and a body size factor depending on the pawn's lifestage) and the combined coverage of natural (not missing) body parts.
After these factors, pawn/corpse mass is offset by the mass of gear (worn apparel and equipped weapon) and inventory items.
For added body parts (artificial items that fully or partially replace limbs: not internal organs or implants), the mass of the item spawned when surgically removed (i.e. the item installed) is multiplied by 90%. This is repeated for each added body part, and the sum of these adjusted masses is added as a singular offset.
Overall, this equates to:
Total Pawn or Corpse Mass = (Base Mass × (Base Body Size × Body Size Factor) × Coverage of Natural Body Parts) + Gear + Inventory + (Added Body Part Item Masses × 0.9)
For unfinished items, the base mass is offset by the combined mass of all ingredients:
Unfinished Item Mass = Mass Base + ((Ingredient 1 Mass × Ingredient 1 Amount) + (Ingredient 2 Mass × Ingredient 2 Amount) etc...)
Base Values[edit]
Stat Def Data[edit]
| Name | Description | Category | Parameters | Complex Parameters | Display Priority In Category |
|---|---|---|---|---|---|
|
The physical mass of an object. |
|
|
|
1500 |
Version history[edit]
 | This section is a stub. You can help RimWorld Wiki by expanding it. Reason: General Version history. |
- Capacities
- Pain • Consciousness • Moving • Manipulation • Talking • Eating • Sight • Hearing • Breathing • Blood Filtration • Blood Pumping • Digestion
- Basics | Important
- Market Value • Market Value Ignoring Hitpoints • Honor Value
- Non Pawn Important
- Nutrition • Medical Potency • Medical Tend Quality Maximum • Max Hit Points
- Basics
- Mass • Flammability • Psychic Sensitivity Factor • Psychic Sensitivity Offset • Neural Heat Limit Offset • Neural Heat Recovery Rate Offset • Slave Suppression Offset
• Terror (Source) • Max Install Count 
- Pawn
- Recreation Fall Rate • Sleep Fall Rate • Eating Speed • Foraged Food Amount • Minimum Handling Skill • Mental Break Threshold • Immunity Gain Speed • Pain Shock Threshold • Lifespan Factor • Minimum Comfortable Temperature • Maximum Comfortable Temperature • Injury Healing Factor • Caravan Riding Speed • Carrying Capacity • Filth Rate • Crawl Speed • Move Speed • Max Nutrition • Rest Rate Multiplier • Toxic Environment Resistance • Toxic Resistance • Animals Learning Factor • Global Learning Factor • Neural Heat Limit • Psychic Sensitivity • Leather Amount • Meat Amount • Neural Heat Recovery Rate • Meditation Psyfocus Gain • Neural Heat Gain (Factor) • Ideoligion Spread Chance • Global Certainty Loss Factor • Terror • Raw Nutrition Multiplier • Learning Rate Factor • Cancer Rate Factor • Fertility • Hemogen Gain Multiplier
- Non Pawn
- Construction Speed (Material Factor) • Deterioration Rate • Sell Price Multiplier • Beauty • Outdoor Beauty • Cleanliness • Comfort • Work To Make • Food Poison Chance (Food Stat) • Shooting Accuracy (Turrets) • Style Dominance
- Mechanoid
- EMP Resistance • Bandwidth Cost • Energy Usage Multiplier • Wastepacks Per Recharge • Control Taking Time • Repair Energy Cost
- Apparel
- Armor - Material Effect Multiplier • Insulation - Cold - Material Effect Multiplier • Insulation - Heat - Material Effect Multiplier • Equip Delay • Pack Radius • Shield Recharge Rate • Shield Max Energy • Insulation - Heat • Insulation - Cold • Armor - Heat • Armor - Blunt • Armor - Sharp • Jump Range
- Weapon (Ranged)
- Ranged Damage Multiplier • Ranged Cooldown • Accuracy (Long) • Accuracy (Medium) • Accuracy (Short) • Accuracy (Close)
- Weapon (Melee)
- Melee Damage Multiplier • Melee Weapon Average Armor Penetration • Melee Damage Per Second
- Building
- Research Speed Factor • Max Power Output • Medical Tend Quality Offset • Work Speed Factor • Work Efficiency Factor • Work To Build • Door Opening Speed • Rest Effectiveness • Immunity Gain Speed Factor • Recreation Power • Surgery Success Chance Factor • Reading Bonus • Trap Spring Chance • Trap Melee Damage • Biosculpter Pod Speed Factor • Assembly Speed Factor • Baby Play Power • Birth Quality Offset • Genetic Complexity Increase
- Ability
- Detection Chance • Goodwill Impact • Effect Radius • Duration • Range • Psyfocus Cost • Neural Heat Gain • Casting Time • Psylink Level
- Stuff Stat Factors (Multipliers when made of this)
- Melee Cooldown • Sharp Damage • Blunt Damage • Insulation - Heat (Material Factor) • Insulation - Cold (Material Factor) • Armor - Heat (Material Factor) • Armor - Blunt (Material Factor) • Armor - Sharp (Material Factor)
- Mechanitor
- Mech Bandwidth • Mech Control Groups • Mech Gestation Speed • Mech Remote Repair Distance • Mech Remote Shield Distance • Mech Remote Shield Energy • Mech Repair Speed • Subcore Encoding Speed • Mech Work Speed Offset
- Pawn | Combat
- Stagger Time Multiplier • Ranged Cooldown Multiplier • Aiming Time • Pawn Trap Spring Chance • Incoming Damage Multiplier • Accuracy Factor (Long) • Accuracy Factor (Medium) • Accuracy Factor (Short) • Accuracy Factor (Close) • Shooting Accuracy (Indoors Dark • Indoors Lit • Outdoors Dark • Outdoors Lit ) • Mortar Miss Radius Multiplier • Melee Armor Penetration • Melee Dodge Chance (Indoors Dark • Indoors Lit • Outdoors Night • Outdoors Day ) • Melee Hit Chance (Indoors Dark • Indoors Lit • Outdoors Dark • Outdoors Lit ) • Melee DPS • Melee Damage Factor • Melee Cooldown • Melee Door Damage Factor • Shooting Accuracy Multiplier (Child)
- Social
- Bond Chance Factor • Train Animal Chance • Tame Animal Chance • Arrest Success Chance • Beauty (Pawn) • Social Impact • Drug Sell Price Improvement • Trade Price Improvement • Negotiation Ability • Suppression Power • Conversion Power • Slave Suppression Fall Rate • Animal Products Price Improvement
- Work
- Cleaning Speed Multiplier • Butchery Speed • Mechanoid Shredding Speed • Hunting Stealth • Research Speed • Smelting Speed • Smoothing Speed • Animal Gather Speed • Animal Gather Yield • Drug Cooking Speed • Drug Synthesis Speed • Butchery Efficiency • Mechanoid Shredding Efficiency • Cooking Speed • Food Poison Chance • Plant Work Speed • Plant Harvest Yield • Drug Crop Harvest Yield • Reading Speed • Repair Success Chance • Construct Success Chance • Construction Speed • Medical Tend Speed • Medical Tend Quality • Medical Operation Speed • Medical Surgery Success Chance • Mining Speed • Deep Drilling Speed • Mining Yield • General Labor Speed • Global Work Speed • Hacking Speed • Pruning Speed • Activity Suppression Speed
• Study Efficiency • Entity Study Rate - Hidden
- Bed Hunger Rate Multiplier