The Gold efficiency of an item tells you how much stats it provides for its price (gold cost). This is a theoretical value with no direct game impact, used mainly to compare items.

A base gold value for each stat has to be defined in order to calculate gold efficiency. This is a form of "theory-crafting" because gold value is not a part of the game's rules; the number has to be derived from the prices of in-game items (see below).

Gold efficiency is then the ratio of the item's theoretical gold value to its actual in-game price.

In general the theoretical gold efficiency is most useful for comparing items' relative, theoretical values. The "real" value of an item during an actual game is influenced by many other factors that are not easily modeled (in terms of gold or otherwise).

## Calculating Gold Efficiency

The formula for the gold efficiency of an item (as a percentage figure) is simple:

The difficulty is in determining the gold value given the stats on the item. It is done by using the price of "reference items" (see next section).

If the item has passive or active effects they are only taken into account if they provide stats with a gold value (e.g. if an item's effect added a temporary flat movement speed, the gold value of this effect could be determined, because there is a reference value for movement speed). See the next section for how the base gold value of various stats is derived from "reference items".

The item price is simply the price from the in-game shop.

Since gold efficiency is usually given as a percentage value, we have to multiply the ratio by 100.

An item is said to be gold efficient if its gold efficiency is at least 100%. Usually, items that are less than 100% gold efficient have other (passive or active) effects that are not taken into account when determining their gold value. This then results in a theoretical gold deficit in the item's value; in those cases, the items passive or active effects usually make up for the deficit.

## Base Statistic Prices

The gold  values assigned to stats are not measures of the effectiveness of those stats. They are simply base values meant to be used in determining the theoretical value of other items (or effects that are not item-related, such as Dragon buffs or Runes).

A stat's gold  value is derived from the least expensive basic item that provides only that stat:

Champion Statistic Base Item Item Cost Stat Raised Gold  / Stat Bonus
Attack damage 350  10 AD 35
Ability power 435  20 AP 21.75
Armor 300  15 Armor 20
Magic resistance 450  25 MR 18
Health 400  150 HP 2.67
Mana 350  250 MP 1.4
Health regeneration 150  50% HP5
Mana regeneration 250  50% MP5
Critical strike chance 600  15% Crit 40
Attack speed 300  12% AS 25
Flat movement speed 300  25 MS 12

Life steal, lethality, magic penetration, on-hit damage, cooldown reduction, percent movement speed, and heal and shield power are not found isolated on any single item, so their gold  values are calculated using the least expensive items that provide the stat: , , , , , and  for each of the aforementioned stats respectively. Spell vamp (on an item) is currently only found on the non-static passive Lifegrip on , making its gold  value incalculable.

Champion Statistic Base Item Item Cost Stat Raised Gold  / Stat Bonus
Life steal 900  10% LS
37.5
35
Lethality 1100  10 Lethality

35
Magic penetration 1100  {{{mpen}}} MC Pen
45 MS

12
On-hit damage 1000  15 OH Dmg
25% AS
25
25
Cooldown reduction 800  % CDR
200 HP

2.67
Percent movement speed 850  % MS
30 AP

21.75
Heal and shield power 800  10% HS Power
50% Base MP5
{{{cdrunique}}}% CDR

## Item Statistics

### Basic Tier Items

350  10 35 N/A
875  25 35 100% Efficiency
1300  40 32.5 107.69% Efficiency

Base Item Item Cost AP Value Gold  / AP Equivalence
435  20 21.75 N/A
850  40 21.25 102.35% Efficiency
1250  60 20.83 104.4% Efficiency

Base Item Item Cost Armor Value Gold  / Armor Equivalence
300  15 20 N/A
800  40 20 100% Efficiency

Base Item Item Cost MR Value Gold  / MR Equivalence
450  25 18 N/A
900  50 18 100% Efficiency

Base Item Item Cost HP Value Gold  / HP Equivalence
400  150 2.67 N/A
900  350 2.57 103.7% Efficiency

Base Item Item Cost MP Value Gold  / MP Equivalence
350  250 1.4 N/A

Base Item Item Cost Hp5 Value Gold  / Hp5 Equivalence
150  50 3 N/A

Base Item Item Cost Mp5 Value Gold  / Mp5 Equivalence
250  50 5 N/A

Base Item Item Cost Crit Value Gold  / Crit chance Equivalence
600  15 40 N/A

Base Item Item Cost AS Value Gold  / % AS Equivalence
300  12 25 N/A

## All items base efficiency

The following table displays all the item base gold efficiencies (without considering passives and actives). Full item gold efficiencies (with passives) can be found on the respective items' pages.

2700 74.57%2800 88.93%1500 76%850 76.76%435 100%3000 70.46%3000 <span style="border-bottom:1px dotted gray;cursor:help;" title="表达式错误：未预料的<操作符。">表达式错误：未预料的<操作符。%2300 103.12%1300 107.69%1100 72.73%2600 98.08%1100 79.55%Remove from Template:Do for every item.3300 66.67%400 350%3200 77.34%850 102.35%Remove from Template:Do for every item.3400 102.21%1000 30%Remove from Template:Do for every item.900 80%1000 70%400 350.42%Remove from Template:Do for every item.1100 79.55%800 100%800 98.75%Remove from Template:Do for every item.2500 90%600 100%300 100%75 0%500 0%650 105.13%450 54.44%300 100%350 123.69%2900 71.18%3100 82.26%450 109.63%400 196.56%450 47.41%3200 65.63%2900 90.23%500 0%500 0%500 0%2900 93.97%800 65.63%250 100%900 84.58%800 102.08%2750 145.45%400 221.98%2700 148.64%2500 78.4%3100 94.09%3300 69.09%900 103.7%Remove from Template:Do for every item.2800 78.57%950 173.68%950 42.11%950 133.68%2800 68.75%400 190%Remove from Template:Do for every item.50 0%1150 0%2150 0%1300 102.31%2800 101.67%Remove from Template:Do for every item.2500 94.87%Remove from Template:Do for every item.Remove from Template:Do for every item.Remove from Template:Do for every item.2700 93.83%2700 <span style="border-bottom:1px dotted gray;cursor:help;" title="表达式错误：未预料的<操作符。">表达式错误：未预料的<操作符。%3400 95.59%900 60%1200 88.19%800 66.67%700 53.57%2300 85.51%1450 103.45%Remove from Template:Do for every item.3000 63.92%2500 66.93%350 100%2900 118.1%1300 99.23%3200 95.76%3200 127.08%2900 66.38%2900 66.38%3100 85.48%1600 43.85%2900 82.41%1100 90%2100 70.79%3400 136.76%2500 87.57%2500 96.06%3000 114.17%1250 104.4%900 100%1100 36.36%450 100%800 81.56%3300 <span style="border-bottom:1px dotted gray;cursor:help;" title="表达式错误：未预料的<操作符。">表达式错误：未预料的<操作符。%300 0%400 372.92%3000 0%1100 96.21%2600 84.67%875 100%Remove from Template:Do for every item.1300 41.54%2700 83.95%2500 78.06%3300 68.94%1000 62.5%2300 94.2%150 0%150 100%400 65.94%2650 100.13%Remove from Template:Do for every item. Rod of Ages (Quick Charge)Remove from Template:Do for every item.400 100%2600 84.67%400 156.67%Remove from Template:Do for every item.3000 96.36%2300 <span style="border-bottom:1px dotted gray;cursor:help;" title="表达式错误：未预料的<操作符。">表达式错误：未预料的<操作符。%350 100%3000 64.17%100 735%1100 95.45%400 392.5%700 0%2050 91.06%Remove from Template:Do for every item.1100 49.09%400 81.67%1250 89.33%2900 103.62%400 112.67%2900 76.55%Remove from Template:Do for every item.2600 87.56%400 65%3100 90.86%1100 79.55%650 0%2700 95.37%2750 84.85%400 158.54%400 84%400 84%2700 79.01%1200 72.92%3300 72.22%3333 68.51%2400 86.07%2600 67.31%900 100%2650 57.45%1000 80%3000 91.11%Remove from Template:Do for every item.3100 95.16%3000 70%3000 <span style="border-bottom:1px dotted gray;cursor:help;" title="表达式错误：未预料的<操作符。">表达式错误：未预料的<操作符。%1050 100%2400 63.19%2600 88.99%

Item Cost Base Efficiency
3000 stats87%
2800 stats88.93%
1100 stats103.64%
850 stats100%
435 stats100%
3200 stats70.76%
stats Archangel's Staff (Quick Charge)3200 stats70.76%
2300 stats117.58%
2100 stats93.29%
1300 stats107.69%
900 stats59.26%
3000 stats99.26%
1100 stats79.55%
1600 stats78.13%
3000 stats100%
400 stats410.42%
3300 stats75%
850 stats102.35%
1625 stats76.92%
3500 stats80%
1000 stats0%
300 stats0%
900 stats0%
1000 stats70%
400 stats410.94%
1100 stats92.73%
1100 stats103.79%
800 stats100%
800 stats98.75%
1500 stats53.33%
2200 stats102.27%
800 stats100%
300 stats100%
stats Control Ward75 stats0%
500 stats0%
650 stats105.13%
450 stats54.44%
300 stats100%
350 stats102.14%
2900 stats80.46%
3600 stats87.69%
450 stats134.63%
400 stats196.56%
450 stats95.41%
2900 stats81.61%
2900 stats96.26%
500 stats0%
500 stats0%
500 stats0%
3300 stats120.71%
800 stats65.63%
125 stats100%
900 stats114.21%
800 stats100%
2750 stats145.45%
400 stats221.98%
2700 stats148.64%
2700 stats121.98%
3100 stats94.09%
2500 stats60.8%
1000 stats101.33%
900 stats112.96%
2800 stats84.82%
950 stats155.26%
950 stats117.89%
950 stats185.39%
3100 stats65.93%
400 stats190%
1500 stats86.31%
50 stats0%
1150 stats0%
2150 stats0%
1300 stats102.31%
2800 stats101.67%
3400 stats92.35%
2500 stats94.87%
1050 stats82.86%
350 stats0%
350 stats0%
2700 stats93.83%
3000 stats149.56%
3400 stats111.76%
900 stats29.63%
1200 stats88.19%
800 stats100%
700 stats53.57%
2200 stats78.79%
1450 stats48.28%
3100 stats78.43%
3200 stats82.29%
2200 stats76.36%
350 stats100%
2800 stats56.25%
1300 stats99.23%
3200 stats95.76%
3200 stats127.08%
2400 stats65.63%
2400 stats65.63%
3250 stats89.74%
1400 stats51.07%
3400 stats81.03%
1100 stats40.91%
stats Might of the Ruined King3300 stats102.27%
2100 stats124.76%
3400 stats142.65%
3000 stats77.42%
2800 stats56.25%
3000 stats117.44%
1250 stats104.4%
720 stats100%
1100 stats36.36%
450 stats100%
1600 stats60.52%
3000 stats136.67%
300 stats0%
400 stats406.25%
3000 stats0%
1250 stats84.67%
2600 stats77.94%
875 stats100%
1300 stats41.54%
3600 stats72.5%
2900 stats85.06%
2600 stats77.94%
3500 stats107.86%
1000 stats62.5%
2100 stats107.94%
150 stats0%
150 stats100%
400 stats65.94%
2650 stats100.13%
2600 stats97.12%
2600 stats97.12%
400 stats100%
2600 stats90.6%
400 stats156.67%
1500 stats161.78%
2600 stats106.06%
2100 stats146.83%
350 stats100%
3000 stats82.92%
1100 stats94.09%
1100 stats95.45%
400 stats463.54%
1050 stats58.73%
2050 stats118.7%
1000 stats0%
1100 stats50.91%
400 stats81.67%
1200 stats93.06%
2900 stats103.62%
400 stats112.67%
2800 stats98.45%
1000 stats0%
2600 stats87.56%
400 stats65%
3200 stats37.5%
1100 stats103.79%
650 stats0%
3200 stats97.66%
2750 stats84.85%
400 stats158.54%
850 stats41.18%
stats Tear of the Goddess (Quick Charge)850 stats41.18%
2900 stats78.16%
1325 stats77.36%
3500 stats82.86%
3733 stats97.04%
stats Trinity Fusion3733 stats127.18%
2400 stats86.07%
2400 stats84.03%
900 stats100%
2650 stats57.45%
1000 stats80%
2850 stats105.26%
1625 stats145.64%
2900 stats80.95%
2900 stats75.57%
2900 stats99.71%
1400 stats112.61%
2250 stats104.74%
2900 stats96.48%