### Attack Speed mechanics

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toomad

Senior Member

I want to know how exactly attack speed works for my calculations. I couldn't find any thread about it (or one containing the info I need)

So my questions are:

1. Does attack speed gain by level, gain IAS based on level 1 attack speed? (seems so)
2. When using items with IAS, does the bonus apply on the current level based AS or the level 1 AS?
3. I heard there is a cap at 2.5 AS. Is it true?

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Savage

Senior Member

Heroes gain attack speed with every level. This is a percentage boost that applies to the hero's base attack speed, and which stacks arithmatically with attack speed boosts from other sources.

As an easy example, Twisted Fate has a base attack rate of 0.65 attacks per second, and gains 3% attack speed per level. So at level 18, he has an attack rate of 0.9815 (0.65 * (1 + 0.03 * 17)) attacks per second. If you bought a Recurve Bow, you would then attack at a rate of 1.2415 (0.65 * (1 + 0.03 * 17 + 0.40)) attacks per second.

There is a cap on attack rate of 2.5 attacks per second. The cap on attack speed varies per hero as a result, depending on their base attack speed - the lowest cap is on Teemo, at 311% attack speed to reach the cap.

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toomad

Senior Member

So it's all based off the level one AS.

This means the higher the base AS, the better IAS items are on your champion if I'm not mistaken.

edit: Champions gain the per level bonuses already at level one, so it should be (0.65 * (1 + 0.03 * 18)) = 1.001 ?

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Savage

Senior Member

Quote:
Originally Posted by toomad
edit: Champions gain the per level bonuses already at level one, so it should be (0.65 * (1 + 0.03 * 18)) = 1.001 ?
They gain the per level bonuses at level 1 for everything except attack speed.

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toomad

Senior Member

okay I think I dotta do some more sandboxing on this...

Have you seen the Champion stats calc? There it gives you always higher values.

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Savage

Senior Member

Quote:
Originally Posted by toomad
Have you seen the Champion stats calc? There it gives you always higher values.
When a calculator on some website disagrees with the values in the game, the calculator is wrong.