Whenever a unit in DotA dies, all nearby heroes that are allied with the unit that killed it gain an amount of experience dependent on the killed unit's level. The experience is equally shared among all allies of the killing unit, the killing unit itself does not gain more experience than any other unit.

A few important things about experience:

• Experience range in DotA is 1200, all allied heroes in that area gain experience from the kill.
• Any hero kill done outside of this 1200 area grants experience to the killer.
• Killing a unit that you are allied with does not grant you experience.
• Heroes continue to take a portion of the experience even when they are level 25.
• Even building kills give experience.

Denies

Whenever a unit owned by the Sentinel or Scourge is killed by an allied player, it counts as a deny, and normal experience is not granted to nearby enemy heroes.

The amount of experience enemy heroes get for a denied unit is determined by the following:
Each melee enemy hero in 1200 range of the killed unit gets 36/n experience, and each ranged enemy hero gets 18/n experience, where n is the total number of enemy heroes within 1200 range.

Example: A Sentinel player denies a Treant, there are 2 Scourge melee heroes and one Scourge ranged hero within 1200 range of the killed unit.

• Each melee hero gets 12 (36/3) experience.
• The ranged hero gets 6 (18/3) experience.

Summons, Easy Mode, and extra hero experience

There are 3 factors that can cause units to give a different experience value than normal.

Summons

Units considered by Warcraft 3 to be summoned only give 50% (rounded down) of their normal experience when killed. Most units created by spells and items are considered as summoned.

The Unit Statistics guide lists which units are summons and which are not.

Easy Mode

When Easy Mode (-EM) is active, all units give 150% (rounded up) of their normal experience when killed.

Extra hero experience

Heroes that are in a 1200 area of a dying enemy hero will be granted a certain amount of XP, depending on the total number of allied heroes in that area.

• 1 Hero: 120+20*LevelOfDyingHero
• 2 Heroes: 90+15*LevelOfDyingHero
• 3 Heroes: 30+7*LevelOfDyingHero
• 4 Heroes: 20+5*LevelOfDyingHero
• 5 Heroes: 15+4*LevelOfDyingHero

Hero Experience Table

The table below shows experience required for heroes to be at a certain level, as well as experience gained from killing heroes and units. Below is an explanation of each of the columns.

Level: This indicates what level unit is being referred to by the other columns.

Experience Required: This is the minimum total experience a hero must have to be at the indicated level.

Hero Kill Experience: This is the base amount of experience given by killing a hero, it is split amongst all allied heroes of the killing unit within 1200 range. This value does not include the bonus experience that hero kills also give. This value will be 50% greater if Easy Mode is enabled.

Unit Kill Experience: This is the base amount of experience given by killing a unit, it is split amongst all allied heroes of the killing unit within 1200 range. This value will be 50% greater if Easy Mode is enabled, and 50% less if the killed unit counts as a summoned unit.

 

 

Level	Experience Required	Hero Kill Experience	Unit Kill Experience
1	0	100	25
2	200	120	41
3	500	160	62
4	900	220	88
5	1400	300	119
6	2000	400	155
7	2600	500	196
8	3200	600	242
9	4400	700	293
10	5400	800	349
11	6000	900	410
12	8200	1000	476
13	9000	1100	547
14	10400	1200	623
15	11900	1300	704
16	13500	1400	790
17	15200	1500	881
18	17000	1600	977
19	18900	1700	1078
20	20900	1800	1184
21	23000	1900	1295
22	25200	2000	1411
23	27500	2100	1532
24	29900	2200	1658
25	32400	2300	1789

Experience Formulae (advanced)

This section probably won't be understood unless you know how functions work in algebra.

The experience gained by killing units and heroes, and the experience required for a hero to level up are determined by the formulae below.

Experience required to level up

The total experience required to reach level x for most levels can be expressed as a function f(x):

• f(x) = f(x-1) + 100x

Where f(1)=0, or explicitly as:

• f(x) = 50x² + 50x - 50

For levels 7, 8, 11, and 12, different values are used.


Experience gained from killing a hero

The total experience gained by killing a hero of level x < 6 is expressed as a function f(x):

• f(x) = f(x-1) + 20(x-1)

Where f(1) = 100, or explicitly as:

• f(x) = 10x² - 10x + 90

The total experience gained by killing a hero of level x > 5 is expressed as a function f(x):

• f(x) = f(x-1) + 100

Where f(5) = 300, or explicitly as:

• f(x) = 100x - 200

Combined into a single function using the Heaviside (step) function, we obtain the general formula:

• f(x) = (10x² - 10x + 90) H(5.5 - x) + (100x - 200) H(x - 5.5)

Experience gained from killing a unit

The total experience gained by killing a unit of level x is expressed as a function f(x):

• f(x) = f(x-1) + 5x + 6

Where f(1) = 25, or explicitly as:

• f(x) = 2.5x² + 8.5x + 14