
In Dungeons & Dragons, a character's Constitution modifier is added to their maximum HP every time they level up. This can be a negative number if their Constitution score is low. For example, if a character's Constitution score drops, they lose 1 hit point per Hit Die for every point by which their Constitution modifier drops. Conversely, if a character's Constitution modifier increases, their hit point maximum changes as well, and their HP would also increase retroactively for past levels.
| Characteristics | Values |
|---|---|
| Constitution modifier changes | HP changes |
| Constitution score drops | Lose 1 hit point per Hit Die for every point by which the modifier drops |
| Gain hitpoints | Roll all remaining dice, add them together, and add bonuses like Constitution modifier |
| Lose hitpoints | Lose 1 hit point per Hit Die for every point by which the modifier drops |
| Hit Dice | Number and size determined by class and level |
| Tough feat | Maximum HP increased by 2 HP for each character level |
| Hill dwarf character | Gain 1 HP for each character level |
| Sorcerer with draconic bloodline | Gain 1 HP for each level in the sorcerer class |
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What You'll Learn

Constitution modifiers and HP
In D&D, a character's Constitution modifier has a direct impact on their hit points (HP). The Constitution modifier is added to the character's maximum HP every time they level up. This can be a positive or negative number, depending on the character's Constitution score. For example, if a character has a Constitution modifier of +2 and gains a level, their maximum HP will increase by 2 for that level.
The impact of Constitution modifiers on HP is retroactive. This means that if a character's Constitution modifier increases, their maximum HP for all previous levels is adjusted as though they had the new modifier from the first level. For instance, if a character's Constitution modifier increases from +1 to +2 at the fourth level, they will add 3 hit points to their first three levels and then roll their hit points for the fourth level using the new modifier.
On the other hand, if a character’s Constitution score drops, they will lose hit points. Specifically, they will lose 1 hit point per Hit Die for every point by which their Constitution modifier drops. For example, if a character's Constitution modifier drops from +3 to +1 at the seventh level, they will lose 14 hit points (2 per level).
Constitution modifiers can be gained or lost through various means, such as drawing the Star from the Deck of Many Things or being affected by poison. The number of hit points gained or lost due to a change in Constitution modifier is determined by the character's level and the amount of change in the modifier.
In summary, a character's Constitution modifier directly affects their HP in D&D. Changes to the Constitution modifier, whether increases or decreases, will result in adjustments to the character's maximum HP, with the potential for significant gains or losses in hit points.
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Constitution score drop
In the game of Dungeons and Dragons, the Constitution score is a crucial determinant of a character's health and ability to withstand damage. A character's Constitution score directly influences their Hit Points (HP), which represent their overall health and resilience. When a character's Constitution score drops, it has a significant impact on their HP and, consequently, their survivability.
The effect of a Constitution score drop on HP is governed by the rules of the specific edition of D&D being played. In editions such as 3e and 3.5e, a decrease in Constitution modifier leads to a corresponding loss in HP. For instance, if a character's Constitution modifier drops by 1, they lose 1 HP per Hit Die. This loss in HP can be substantial, especially if the character has a high level or a significant Constitution modifier change.
For example, let's consider a scenario where Tordek, a 7th-level character, is poisoned, causing his Constitution score to decrease. His Constitution modifier drops from +3 to +1, resulting in a loss of 14 HP (2 per level). Subsequently, the poison inflicts additional temporary Constitution damage, reducing his score further to 5 and his modifier to -3. This additional modifier drop leads to a loss of another 28 HP, resulting in a total loss of 42 HP due to the overall 6-point drop in his Constitution modifier.
It is important to note that the rules for calculating HP and the impact of Constitution score changes may vary between editions of D&D. In 5th Edition (5e), for instance, the Constitution modifier is added to the maximum HP every time the character levels up. This can be a positive or negative number, depending on the Constitution score. Certain character traits or feats can also influence HP calculation, such as the Tough feat, which increases the maximum HP by 2 HP for each character level.
In summary, a drop in Constitution score can significantly impact a character's HP in D&D. The specific rules governing this relationship may vary depending on the edition being played. Constitution modifiers directly affect HP, and any changes to the modifier will result in corresponding adjustments to the character's overall health and resilience. Understanding these rules is essential for players to effectively manage their characters' health and make strategic decisions during gameplay.
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Hit Dice and HP
In Dungeons & Dragons, a character's hit points (HP) are determined by their hit dice and Constitution modifier. Each class has a specific type of hit die, such as a d6, d8, or d12, which increases in number as the character levels up. For example, a 5th-level barbarian has 5d12 hit dice. During a short rest, players can roll these hit dice to regain hit points, adding their Constitution modifier to each die rolled.
When a character levels up, their Constitution modifier is added to their maximum HP. This can be a positive or negative number depending on their Constitution score. For example, if a character has a Constitution modifier of +2 at level 10, they would gain 2 HP for each of their previous levels, resulting in a total of 20 additional HP.
Additionally, certain items, abilities, and features can increase a character's Constitution modifier, thereby increasing their maximum HP. For instance, the Tough feat increases maximum HP by 2 HP for each character level, while a hill dwarf gains 1 HP for each character level.
On the other hand, if a character’s Constitution score drops due to damage or drain, their HP will also decrease. They will lose 1 hit point per Hit Die for every point by which their Constitution modifier drops. This can be dangerous, as it reduces the amount of HP available to absorb damage.
In summary, a character's hit dice and Constitution modifier work together to determine their HP in D&D. Hit dice provide the base value, while the Constitution modifier adds or subtracts from this value, depending on the character's attributes and abilities.
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Constitution and character class
In Dungeons and Dragons, a character's Constitution score is a measure of their physical fortitude, endurance, and health. It is one of the six core abilities that make up a character's attributes, along with Strength, Dexterity, Intelligence, Wisdom, and Charisma. A character's Constitution score directly affects their Hit Points (HP), which represent their ability to withstand damage and injury.
When creating a character, the player assigns ability scores, including Constitution, which can be generated randomly or chosen by the player within certain guidelines. The Constitution score is then modified by the character's race, class, and other factors, resulting in a Constitution modifier. This modifier is added to the character's Hit Dice to determine their maximum HP.
For example, a first-level sorcerer with a Constitution modifier of +2 and a 6-sided Hit Die would have a maximum HP of 8 (6 from the die roll + 2 from the modifier). As the character advances in level, they gain more Hit Dice and their Constitution modifier may change, resulting in an increased maximum HP.
Different character classes have different ways of calculating their maximum HP. For instance, a barbarian gains a large number of Hit Dice as they level up, reflecting their robust health, while a wizard may have fewer Hit Dice but can gain bonuses to their maximum HP through certain class features or abilities.
Additionally, certain items, feats, or abilities can further modify a character's Constitution score or maximum HP. For example, a periapt of vitality is an item that can increase a character's Constitution, and the Tough feat increases their maximum HP by 2 for each level.
In summary, a character's Constitution score and modifier directly influence their Hit Points, which represent their physical resilience and ability to withstand damage in combat. The interaction between Constitution and character class determines the specific way in which HP is calculated and modified as the character progresses through their adventures.
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HP calculation
In role-playing games like Dungeons and Dragons (D&D), the number of hit points (HP) a character has is influenced by their Constitution score. Constitution refers to the character's physical health, and a higher Constitution score results in more HP. When creating a character, their initial HP is determined by their class and level, with each class having a specific hit die. For example, a barbarian uses a 12-sided die, while a fighter uses a 10-sided die. At level one, the character's maximum HP is the highest roll of their hit die, and they gain additional HP as they level up.
The Constitution modifier also affects HP. If a character's Constitution modifier increases, their hit point maximum increases as well, as if they had the new modifier from the first level. For instance, if a character's Constitution modifier increases from +1 to +2 at the fourth level, they add 3 HP to their first three levels and then roll their hit points for the fourth level using the new modifier. Conversely, if a character's Constitution score drops, they lose 1 hit point per Hit Die for every point their Constitution modifier decreases.
The calculation of HP also depends on the edition of the game being played. In D&D 5th Edition (5e), players can roll all the remaining dice, add them together, and then add any relevant bonuses, such as their Constitution modifier or class features. For example, a fifth-level barbarian might roll 4d12 (one less than their level) and add 12 (the maximum of their d12 for level one). Additionally, certain character races or feats can provide bonuses to HP. For instance, a hill dwarf gains 1 HP for each character level, and the Tough feat increases maximum HP by 2 HP for each level.
In summary, the HP calculation in D&D involves considering the character's class, level, Constitution score, and any relevant modifiers or bonuses. The specific rules may vary slightly depending on the edition of the game, but the core principle of linking HP to a character's Constitution remains consistent.
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Frequently asked questions
You get 3 HP from Constitution because your Constitution modifier contributes to your hit points. You add your Constitution modifier to each Hit Die you roll for your hit points.
If your character’s Constitution score drops, they lose 1 hit point per Hit Die for every point by which their Constitution modifier drops.
Your Constitution modifier is added to your maximum HP every time you level up.

























