Fall Damage Explained - Project Zomboid Build 42.19

Fall damage is not only about how many floors you fall. The game mainly considers:

The game does not simply check “one floor, two floors, three floors”. It calculates the impact from the fall height / landing speed. The values below are simplified, but useful for understanding the danger.

Before traits, skills, carried weight, surface and previous injuries are applied, the base damage can be roughly understood like this:


Important: these are not final values. The real result can be much higher or lower depending on your character and situation.

Carried weight has a major impact. The game compares your current carried weight against your maximum carry capacity.


The game does not directly check the Heavy Load moodle itself for fall damage. Instead, it checks the actual carried weight. The moodle is just a visible warning that your weight is becoming dangerous.

Some weight-related traits directly increase fall damage.


This means both extreme high weight and extreme low weight are dangerous when falling.

Fitness and Nimble both reduce fall damage.

Because both Fitness and Nimble apply, a character with high levels in both skills can survive much better than an unfit character.
So a very fit and nimble survivor can take much less fall damage than a weak, clumsy or untrained survivor.

Landing on natural ground can reduce damage.

Natural ground also has a small extra chance to avoid damage, but this is not reliable enough to depend on.
Previous injuries can multiply the final fall damage. This is especially dangerous with fractures or deep wounds.
These modifiers can stack. Falling while already injured, especially with a fractured leg or torso injury, can turn a survivable fall into a deadly one.

After the impact damage, the game can also create extra injuries.


Light falls usually affect legs and feet. Severe falls can affect more body parts and may roll for more than one injury.

Most moodles do not directly modify the fall-impact damage calculation.


In practice, the most important “moodle-related” danger is Heavy Load, because it usually means your carried weight is high.

• Do not jump from high places while overloaded.
  
• Drop heavy bags before climbing or jumping if possible.
  
• Injured legs, feet or torso make falls much more dangerous.
  
• Fitness and Nimble can greatly reduce fall damage.
  
• Obese, Overweight, Emaciated and Very Underweight characters are more vulnerable.
  
• Natural ground is safer than hard surfaces, but it is not a guarantee.
  
• A fall that is survivable once can still kill you if the random damage roll is worse or if you are carrying more weight.

The worst fall situation is:


Short version: the safest survivor is light, healthy, fit, nimble, and not already injured. The most vulnerable survivor is overloaded, injured, unfit, and falling onto a hard surface.