Attack Range

The attack range is the maximum distance of how far a normal attack would hit between the attacker and the unit being attacked. The attack range itself is not what decides if a unit is classified as Ranged or  Melee. This characteristic is set for each unit individually, regardless of their actual attack range. This means that it is possible for a melee unit to have a higher attack range than a ranged unit.

Definitions
Some heroes have abilities that allow them to switch between melee and  ranged form, allowing them to benefit from both forms for a timed duration.

Miss Chance
For melee units, if the target is farther than  range more than the melee unit's attack range, the attack will always miss, true strike does not guarantee hits on units outside of the buffer range. For most melee heroes attack buffer range is the sum of the hero's base attack range and range.

For ranged units, they are affected by the uphill miss chance.

Motion Buffer
The default motion buffer range for attack range is, this range prevents attacks (and unit-targeted abilities) from canceling when the target moves out of the attack range, or before reaching the attack point.

Acquisition Range
In order to prevent units from automatically attacking any visible enemy unit, they have a certain acquisition range. This range determines how close an enemy has to get in order for the unit to attack it automatically. Since this only goes for auto attacks, this range has no influence on units that have auto attack set to autoattack/never in the game options.

The default acquisition range is 600 for melee heroes, and 800 for ranged heroes. There are some exceptions to this mainly due to abilities.

Base Attack Range
Base Attack Range consists of one fixed value set for each unit individually. It can be further modified by attack range bonuses based on the unit's attack range type.

Heroes
Most melee heroes have an attack range of 150.

Spell Steal
Most abilities acquired with which modifies attack range also fully affect 's attack range for their duration when stolen and used, with the exception of  and. See here for details.

Increasing Sources
The following list also includes certain active attack modifiers' that grant attack range bonus. The cast range of active attack modifiers can only be further increased by attack range bonuses of the same range type as the caster.

Ranged Heroes
The following sources only affect ranged heroes.

Talents
Besides these, the following heroes have other specific attack range talents:

Melee Heroes
The following sources only affect melee heroes.

Reducing Sources
Percentage-based reductions are calculated after all flat values, and can be defined as:

Σ Attack Range = (Base Attack Range ± Σ Flat Values) × %-Attack Range Multipliers

Set Base Attack Range
These abilities sets the attack range of the caster or affected unit to a value.

Active Attack Modifiers
All active attack modifier-based abilities' cast range is based on the caster's attack range. The cast range can be further increased by other attack range bonuses of the caster's range type. For example, for  ranged heroes and  for  melee heroes. These active attack modifiers are not affected by cast range bonuses.

Depending on the ability itself, certain abilities use the cast range when cast manually (or when using the designated Hotkey) and use the hero's attack range when set to. This information can be found in the abilities' respective notes.

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