You are watching: Do you add proficiency to damage
So, please tell me if I"ve gained this right:
I"m competent with a longbow. That method my attack roll is 1d20 + prof bonus + Dex modifier.The damages roll but is 1d8 + Dex modifier.I"m simply a tiny confused about working the end the number (without even going into spells and also when to roll for attack, etc.)


Yes, you"re expertise it correctly.
You roll your attack roll for the bow with proficiency and Dex modifier (PHB p. 194), and damage with just Dex (PHB p. 196).


All of the details presented below is gathered and also derived from the declared rules uncovered in chapter 9: Combat, that the Player"s Handbook for 5th Edition D&D, beginning with page 189. Any added rules (or effects, choose from spells) cite their origin.Attack Bonus
There are 4 parts the get included together:
Your ability ModifierFor many Melee weapons, this is Strength; for most Ranged weapons, this is Dexterity; because that attack-roll spells, this is your Spellcasting ability (typically Intelligence, Wisdom, or Charisma)The notable exemption to this rule is the Finesse property, i m sorry when discovered on a weapon explicitly enables you come choose between Dexterity or Strength as soon as you choose to make the attack, and use the exact same modifier because that the damages roll together well. In the main point game, this property only shows up on Melee Weapons.Also, thrown weapons typically count together melee weapons, also if they might be offered at range; check the weapon"s statblock for possible exceptions to this rule.Another notable exemption is special course features or spells that enable alternative capacity modifiers. Because that example, a Druid casting ShillelaghSo for example, a level 5 Fighter wielding a +1 Rapier (has the Finesse property), v a toughness Score of 16 and also a Dexterity of 18, would have the following bonus because that their strike Roll:
Ability Modifier: +3 if they use Strength, or +4 if they usage DexterityProficiency: Fighters gain proficiency in Rapiers, for this reason +3 for a Level 5 characterMagic Weapon: Weapon is a +1 Rapier, for this reason +1.Total: +7 through Strength; +8 v DexterityDamage BonusYour capability ModifierSame together above: stamin for melee, Dexterity for Ranged, strength or Dexterity for tools that have the Finesse building (though it have to be the same capacity that was offered to make the assault roll), Intelligence/Wisdom/Charisma for attributes that permit this modifier come be replaced by a different stat.Spells carry out NOT get this damages bonus uneven the character has a details feature that permits their spells come benefit, like the Evocation magicianSo utilizing the Fighter instance from above, suspect they took the Dueling Fighting style (which confers a +2 bonus to damage rolls when a personality is no wielding an ext than one weapon and also only wields the weapon in one hand), their damages Bonus would certainly be:
Ability Modifier: +3 if they use Strength, or +4 if they use DexterityMagic Weapon: +1Buffs/Other Effects: The Dueling Fighting style adds +2 to damage rolls because that one-handed weapons if the personality is not wielding another weapon, so +2Total: +6 for Strength; +7 for DexterityNote that for damage, proficiency was explicitly not added. Proficiency is normally not included to damages rolls unless some feature specifically says it should.
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Additionally, the is essential to psychic that v Finesse weapons, the fighter has the choice of i m sorry modifier come use, yet they have to use the same modifier because that both attack and defense. For this reason they could not, for example, choose to use strength for the assault roll and also Dexterity for the damage roll.
A few other ExamplesLevel 5 Wizard spreading Fire Bolt, knowledge 18Attack Roll: 1d20 + 4 (Intelligence) + 3 (Proficiency) == 1d20 + 7Damage Roll: 2d10 (Firebolt)Level 10 Evocation Wizard spreading Fire Bolt, intelligence 20Attack Roll: 1d20 + 5 (Intelligence) + 4 (Proficiency) == 1d20 + 9Damage Roll: 2d10 (Firebolt) + 5 (Intelligence, Empowered Evocation