League of Legends Build Calculator

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Reviewed by: Alex “RivenMaster” Sterling Lead Game Analyst & Math Specialist

Optimize your League of Legends build with scientific precision. Our build calculator helps you determine the exact Average Damage per Second (DPS) of your items and runes, allowing you to maximize your late-game carry potential.

League of Legends Build Calculator

Estimated Basic Attack DPS
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League of Legends Build Calculator Formula:

DPS = AD × AS × [1 + (CritChance% / 100) × ((CritDamage% – 100) / 100)]

Formula Source: LoL Wiki: Basic Attack Damage | Official League Site

Variables:

  • Attack Damage (AD): The raw damage value of your basic attacks before modifiers.
  • Attack Speed (AS): The number of basic attacks you perform per second (Capped at 2.5 normally).
  • Crit Chance: The percentage probability that a basic attack will deal critical damage.
  • Crit Damage: The total damage multiplier applied on a critical strike (Base is 175%).

Related Calculators:

What is League of Legends Build Calculator?

The league of legends build calculator is a tool designed for theorycrafters and competitive players to determine the mathematical effectiveness of their item choices. In League of Legends, damage isn’t just about high numbers; it’s about the synergy between Attack Damage, Speed, and Critical Strike modifiers.

By calculating your DPS, you can compare whether an item like Infinity Edge provides more value than a high-attack-speed item like Phantom Dancer in your current build path. This helps in making informed decisions during the mid-to-late game transitions.

How to Calculate League of Legends Build Calculator (Example):

  1. Identify your base AD from items and levels (e.g., 200 AD).
  2. Note your Attack Speed (e.g., 1.5 attacks/sec).
  3. Check your Crit Chance (e.g., 50%).
  4. Assuming standard Crit Damage (175%):
  5. Average Hit = 200 * [1 + (0.5 * 0.75)] = 275.
  6. Total DPS = 275 * 1.5 = 412.5 DPS.

Frequently Asked Questions (FAQ):

Does this include Armor calculations?

This calculator focuses on raw output. To find true damage, you must multiply this result by the damage reduction factor (100 / (100 + Target Armor)).

Is there an Attack Speed cap?

Yes, standard champions are capped at 2.5 attacks per second unless using runes like Lethal Tempo or specific abilities.

What is the base Critical Damage?

As of recent patches, the base critical strike damage is 175% of your AD, though Infinity Edge can increase this to 215%.

Does this calculator work for On-Hit builds?

On-hit effects (like Blade of the Ruined King) are typically flat additions per hit and should be added to the Average Hit value before multiplying by Attack Speed.