Pathfinder damage dice progression chart & calculations explained

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Pathfinder damage dice progression

Pathfinder damage dice progression

There’s a new official table of Pathfinder damage dice progression with rules to adjust the damage of weapons across the entire scale. (Announced only a few weeks in the past via Paizo’s Paizo board.) These are available on the Paizo FAQ.

What does Pathfinder damage dice progression say?

Size Changes Effective Size Changes and the Progression of Damage Dice: how to increase or decrease the number of manufactured and natural damage dice for weapons when the weapon’s size or effective size changes. There are a variety of charts, and I’m not sure which one to choose.

Suppose the amount of damage caused to a creature’s weapons or natural attacks changes due to changes in the size of its body (or the weapon’s dimensions). Follow the following guidelines to determine the damage that has changed.

  • If the size is increased by one step or more, you can look at the actual damage on the chart and then increase damages by 2 steps. If the original size is smaller or less (or is regarded as smaller or smaller) or the damage is less than 1d6, raise the amount by one stage.
  • When the amount decreases one step, check the actual damage on the chart, and reduce it by two steps. If the size of the initial damage is smaller or larger (or is regarded as medium and lower) or the damage is less than 1d8 or less, then decrease the damage by one step.
  • When the number on the original dice is not listed on this chart, follow these steps before adjusting the dice that cause damage. When the loss is of d6, locate the next-lowest number of d6 listed on the chart. Use the number of d8 you find as the original value for damage (for example, 10d6 will instead be interpreted as 8d8). Suppose the damages are of d8, locate the next-highest number of d8 in the chart and apply for the d6 number as the original value for damage (for instance, 5d8 could be replaced with 6d6). You can adjust the updated damage amount by the number of steps outlined above when you have the updated damage amount.
  • If the die type is not listed on the chart, follow the following rules before adjusting to the damaged dice. 2d4 counts as 1d8 in the chart, while 3d4 counts as 2d6 on the chart for a larger number of d4. 1d12 is considered 2d6 in the chart, then on to larger amounts of d12.
  • Then, 2d10 grows by 4d8 and then decreases by 2d8 regardless of its initial size for greater amounts of d10.

What exactly does this chart replace? What exactly does it not replace?

This chart replaces the general size progression charts in the PRD used to determine sizes that increase or decrease. If a particular number was announced (for instance, the shillelagh), the chart doesn’t alter that number. It also does not affect the base monk because the monk’s flurry die does not result from the size of his increase. If the monk were to be an increase in size Person, the chart above could be used.

For a quick overview of That errata update:

  • The Bestiary chart
  • The INA feat
  • The Small and Large Chart of Weapon Dmg
  • Spells are used here and there (but look up the previous paragraph)

Size Increase Stacking

Paizo FAQ Increases in size and effectiveness increase How does damage work when I have different factors that affect my size, adequate size, and damage dice?

Following the rules regarding size changes, these changes don’t stack. That means when you have multiple size-altering effects. For example, an effect that makes you larger by one step and another one that increases the dimension by 2 steps), only the biggest is applicable. Similar is the case for actual size increments. It includes “deal damage as if they were one size category larger than they are,” “your damage die type increases by one step,” and similar words). They do not stack on top of each other. You only take the one with the most serious damage. But, you can use one of each. They collaborate (for instance, an enlarger person making your size large and then a bashing shield increases your shield’s effective dimension by 2 steps for total damage of two damage of 2d6).

Pathfinder damage dice progression chart

Damage Dice Progression Chart
If the Size is on the Chart 1 Original is Medium
1d2 +1 Size Damage: Increase the damage by 2 steps
1d3 -1 Size Damage: Decrease the damage by 2 steps
1d4 Original Damage is 1d8 or Less: Decrease damage by 1 step
1d6 Original is Small
1d8 +1 Size Damage: Increase the damage by 1 step
1d10 -1 Size Damage: Decrease the damage by 1 step
2d6 Special
2d8 +1 Size Damage: If the initial damage is 1d6 or less, instead increase the damage by one step
3d6 -1 Size Damage: If the initial damage is 1d8 or lower
If the Size is NOT on the Chart 3d8 Original is Xd6
4d6 1. Find the next lower of d6
4d8 2. Use that number of d8 as the original damage value
6d6 Example: 10d6 -> 8d8
6d8 Original is Xd8
8d6 1. Find next highest number of d8
8d8 2. Use that number of d6
Example: 5d8 -> 6d6
12d6 Original is 2d10 or Xd10
12d8 2d10 increases to 4d8 and decreases to 2d8, regardless of the initial size, and so on for higher numbers of d10. From Mark Seifter: 4d8->4d10->8d8 and 2d12=4d6, 5d12=10d6 is correct.
Size Not Referenced 16d6 2d4 counts as 1d8 on the chart, 3d4 counts as 2d6 on the chart, and so on for higher numbers of d4. 1d12 counts as 2d6 on the chart, and so on for higher numbers of d12.

The chart used in this solution was constructed by studying the table in reverse to find damage per size category. It is not officially recognized.

For smaller dice, the formula is to alternate 150 percent of damage with 133% for each size class, beginning with 3d6 representing 150 percent of 2d6, 3d8 being 150 percent of 2d8, and so on. 4d6 being 133 percent of 3d6, 4d8 being 133 percent of 3d8, etc.

If you take a look at 1d12, the maximum damage is 12 times 150%. 18. The maximum damage for 3d6 is 18.

Add that number to 2d12; maximum loss is 24. Multiply the damage by 150%, and we’ll have 36. The smallest dice we could utilize to make the 36-digit multiplication is 3d12, which means 2d12 multiplied becomes 3d12.

Once you’ve gotten over the 3D damage, the formula is changed to twice the damage dice you used 2 sizes back. Example, [2d6]->(3d6)->[4d6]->(6d6)->[8d6]->(12d6)->[16d6]…

Each (xd6) has twice as large as the previous (xd6), and each [yd6] has twice as big as the last [yd6].

The above applies to the d8, d10, as well, as the d12s too.