D&D Ability Scores Explained: What All Six Stats Actually Do

26 March 2026

Every character in D&D 5e has six ability scores. They’re the foundation of everything your character does—every attack roll, every skill check, every saving throw. Understanding what each one does (and why the modifier matters more than the score) will immediately make you a more effective player.

The six ability scores

According to the Player’s Handbook, the six abilities each describe a broad category of physical or mental capability:

A score of 10–11 is human average. Adventurers typically start higher. 18 is about as high as a person can naturally reach. Scores can go up to 20 through character improvement (beyond that only through special magic).

Scores vs. modifiers — what you actually use

Your raw score (like 14 or 8) rarely comes up directly. What you add to dice rolls is your modifier — a smaller number derived from the score.

The formula: subtract 10, then divide by 2 (round down).

So a Dexterity of 16 gives you a +3 modifier. A Wisdom of 8 gives −1. This modifier is what you add to your d20 rolls.

Because modifiers come up constantly—on every attack, every skill check, every save—they matter far more than the raw score.

What each ability covers

Strength

Strength governs melee attacks with most weapons, grappling, and anything requiring raw physical power: forcing open doors, breaking free from restraints, lifting and carrying heavy loads.

Carrying capacity is your Strength score × 15 pounds — so a character with Strength 15 can carry 225 pounds before being encumbered.

Key skill: Athletics (climbing, jumping, swimming in rough conditions).

Best for: Fighters, Barbarians, Paladins who fight in melee.

Dexterity

Dexterity governs ranged attacks, finesse weapon attacks (daggers, rapiers), stealth, and your Armor Class if you’re wearing light or no armour.

It also determines your initiative roll at the start of combat — a high Dexterity means you often act before enemies.

Key skills: Acrobatics, Sleight of Hand, Stealth.

Best for: Rogues, Rangers, Monks, anyone using ranged weapons or relying on light armour.

Constitution

Constitution affects two things above all else: your hit point maximum (you add your Constitution modifier to HP at every level) and your concentration saving throws (when you take damage while concentrating on a spell, you roll a Constitution save to maintain it).

No skills are tied to Constitution, but it has saving throws against poison, disease, and exhaustion. Every class benefits from a decent Constitution.

Best for: Every character — but especially spellcasters who rely on concentration spells.

Intelligence

Intelligence covers knowledge, memory, and analytical thinking. It’s the primary spellcasting ability for Wizards, and it governs most knowledge-based skills.

Key skills: Arcana, History, Investigation, Nature, Religion.

Best for: Wizards. Useful for any character who wants to investigate, research, or recall lore.

Wisdom

Wisdom covers perception, intuition, and awareness of the world. It’s the spellcasting ability for Clerics, Druids, and Rangers. It also governs Passive Perception — a fixed number (10 + Wisdom modifier + proficiency if applicable) that the DM uses to determine what your character automatically notices.

A low Wisdom means your character is easy to surprise and misses things others would catch.

Key skills: Animal Handling, Insight, Medicine, Perception, Survival.

Best for: Clerics, Druids, Rangers — and any character who wants to notice what’s happening around them.

Charisma

Charisma covers persuasion, deception, performance, and sheer force of presence. It’s the spellcasting ability for Bards, Sorcerers, Warlocks, and Paladins. It also governs how effectively your character interacts with NPCs.

Key skills: Deception, Intimidation, Performance, Persuasion.

Best for: Bards, Sorcerers, Warlocks, Paladins — and any character playing the face of the party.

Proficiency bonus

Your proficiency bonus is a flat number that scales with your character level (+2 at level 1–4, up to +6 at level 17–20). When you’re proficient in a skill, saving throw, or tool, you add this bonus to the relevant check.

You can never add it twice to the same roll.

The three types of rolls

Every die roll in D&D uses one of these three formats:

1. Ability check: Roll d20 + ability modifier (+ proficiency if applicable). Compare to a Difficulty Class (DC). Easy = DC 10, Hard = DC 20.
2. Saving throw: Roll d20 + ability modifier (+ proficiency if you’re proficient in that save). Triggered when something happens to your character.
3. Attack roll: Roll d20 + ability modifier + proficiency bonus. Compare to the target’s Armor Class.

All three follow the same pattern. Once you understand one, you understand all of them.

Practical advice

Put your highest score in your main ability. If you’re playing a Fighter, that’s usually Strength or Dexterity. If you’re playing a Wizard, that’s Intelligence. Everything else flows from this.

Your second-highest score should go to Constitution. It affects your HP at every level and helps you hold concentration. No character regrets having a solid Constitution.

Don’t dump-stat so hard that it breaks your character’s story. A Charisma of 6 on your character means they’re genuinely off-putting. Play that honestly, or pick something else to be weak in.

Go deeper: The Player’s Handbook has the complete ability score rules including all skill descriptions and the full DC table. (Affiliate link — we earn a small commission at no cost to you.)