Mastery

This page was last updated for (v0.19.1).

Mastery

Mastery is a secondary system of levels tied to individual items within a skill. Each item in a non-combat skill (with the exception of Alt. Magic spells) has a level associated with it.

The bonuses unlocked by leveling Mastery depend on the specific skill the Mastery is associated with. To see a full list of bonuses for a given skill, check the in-game Mastery guide page for that skill or visit the wiki page for that skill.

Earning Mastery XP

Each time a player completes an action with an associated Mastery Level, they will receive Mastery XP for that item. The XP per action calculation is:

[math]\displaystyle{ \biggl[ \Bigl( \text{Unlocked Milestones} \times \frac{\text{Player Total Mastery for Skill}}{\text{Total Mastery for Skill}} \Bigr) + \Bigl( \text{Item Mastery Level} \times \frac{\text{Total Items in Skill}}{10} \Bigr) \biggr] \times \text{Seconds Per Action} \times 0.5 }[/math]

Where:

• Unlocked Milestones is the number of milestones the player has unlocked for the relevant skill. These can be seen in game with a level number highlighted in green when viewing milestones from the skilling minibar or skills section of the completion log. This number includes "Skill Mastery" if the player is skill level 99
• Player Total Mastery for Skill and Total Mastery for Skill are both numbers shown on each skill tile within the mastery section of the completion log
• Item Mastery Level is the mastery level of the item/action currently being crafted/performed
• Total Items in Skill is the number of items/actions within the relevant skill, and can also be expressed as [math]\displaystyle{ \tfrac{\text{Total Mastery for Skill}}{99} }[/math]
• Seconds per Action for gathering skills (such as Woodcutting) is the number of seconds taken to complete the action. For other skills, please see below

For the following skills, Seconds per Action is replaced with the following values, being the lowest possible seconds per action after applying all available interval reduction bonuses (except for Firemaking, where the value used is less than the lowest possible burn interval):

Skill	Seconds per Action
Firemaking	60% of the log's base burn interval
Cooking	2.55
Smithing	1.7
Fletching	1.3
Crafting	1.65
Runecrafting	1.7
Herblore	1.7

In other words, there are two main factors that are added together to determine the XP per action:

• The first is based on how many total Mastery levels the player has in the skill. Each item in a skill adds up to +1 to this factor depending on its current Mastery level.
• The second is based on the Mastery level of the specific item gaining XP multiplied by one tenth of the total number of items in the skill.

After both of these factors are added together, they are multiplied by half of the time per action as measured in seconds.

There are two important takeaways from this:

1. Mastery XP per action increases substantially as Mastery level in an item increases.
2. Mastery XP is gained much more quickly for skills with a lot of items (such as Smithing) than it is for skills with only a few (such as Woodcutting).

Bonuses

Aside from increasing the factors mentioned in the formula above, there are several ways to increase the Mastery XP gained:

Name	Description
Ancient Ring of Mastery	The Ancient Ring of Mastery is a rare drop that can be found while Fishing. It increases Mastery XP gained by 7%.
Firemaking	Each Firemaking item at level 99 Mastery grants +0.25% Mastery XP to other skills. In addition, reaching the 95% Mastery Pool Checkpoint for Firemaking increases global Mastery XP by +5%.
Ty	Once acquired, the Mastery pet provides a +3% Mastery XP bonus.
Mastery Pool Checkpoints	The 10% Mastery Pool checkpoint for each skill is a +5% bonus to Mastery XP gained for that skill.
Agility Obstacles	Several Agility Obstacles provide bonuses to Mastery XP for one or more skills. However, others will reduce the amount of Mastery XP earned, so players focused on levelling Mastery should make sure their Agility course isn't slowing them down.

The Mastery Pool

Whenever the player gains Mastery XP, 25% of the amount received is also added to the Mastery Pool for that skill. After Skill level 99, this is increased to 50% of the item Mastery XP. The maximum Mastery Pool XP for a given skill is equal to 500,000 multiplied by the total number of items in that skill.

Mastery XP Pool has two uses:

First, it can be spent to level up any item mastery for a skill. Mastery Pool XP spent this way is converted to item mastery XP at a 1:1 rate.

Second, Checkpoints are reached when the Mastery Pool reaches 10%, 25%, 50%, and 95% filled. These bonuses vary by skill, but are often quite powerful. Checkpoints only remain active as long as the Mastery Pool has enough XP in it to meet the requirement - If enough Mastery Pool XP is spent on leveling items to dip below the threshold for a given checkpoint, the bonus will be lost until enough XP is gained to reach it again.

Mastery tokens can be claimed from the bank to fill the Mastery Pool for the relevant skill by 0.1% of the maximum pool XP.

Mastery Level XP

Mastery Experience follows the same XP progression as skills do.

The experience difference between level [math]\displaystyle{ L-1 }[/math] and level [math]\displaystyle{ L }[/math] is approximately [math]\displaystyle{ \left\lfloor \frac{1}{4} \left( L-1+300\times 2^{\frac{L-1}{7}} \right) \right\rfloor }[/math]. The table below shows this experience difference for each level and also the cumulative experience from level 1 to level [math]\displaystyle{ L }[/math]. Note that experience levels are nonlinear and so the amount of experience between 1 and 92 is the same as the amount of experience between 92 and 99. Experience also doubles about every 7 levels. For example, the experience between 7 and 8 is 138 and the experience between 14 and 15 is 274, which is roughly double.

The base game has a maximum skill and Mastery level of 99, with the Throne of the Herald Expansion the skill level maximum is increased to 120.

Level	XP	Difference		Level	XP	Difference		Level	XP	Difference		Level	XP	Difference		Level	XP	Difference
1	0	0		26	8,740	898		51	111,945	10,612		76	1,336,443	126,022		101	15,889,109	1,497,949
2	83	83		27	9,730	990		52	123,660	11,715		77	1,475,581	139,138		102	17,542,976	1,653,867
3	174	91		28	10,824	1,094		53	136,594	12,934		78	1,629,200	153,619		103	19,368,992	1,826,016
4	276	102		29	12,031	1,207		54	150,872	14,278		79	1,798,808	169,608		104	21,385,073	2,016,081
5	388	112		30	13,363	1,332		55	166,636	15,764		80	1,986,068	187,260		105	23,611,006	2,225,933
6	512	124		31	14,833	1,470		56	184,040	17,404		81	2,192,818	206,750		106	26,068,632	2,457,626
7	650	138		32	16,456	1,623		57	203,254	19,214		82	2,421,087	228,269		107	28,782,069	2,713,437
8	801	151		33	18,247	1,791		58	224,466	21,212		83	2,673,114	252,027		108	31,777,943	2,995,874
9	969	168		34	20,224	1,977		59	247,886	23,420		84	2,951,373	278,259		109	35,085,654	3,307,711
10	1,154	185		35	22,406	2,182		60	273,742	25,856		85	3,258,594	307,221		110	38,737,661	3,652,007
11	1,358	204		36	24,815	2,409		61	302,288	28,546		86	3,597,792	339,198		111	42,769,801	4,032,140
12	1,584	226		37	27,473	2,658		62	333,804	31,516		87	3,972,294	374,502		112	47,221,641	4,451,840
13	1,833	249		38	30,408	2,935		63	368,599	34,795		88	4,385,776	413,482		113	52,136,869	4,915,228
14	2,107	274		39	33,648	3,240		64	407,015	38,416		89	4,842,295	456,519		114	57,563,718	5,426,849
15	2,411	304		40	37,224	3,576		65	449,428	42,413		90	5,346,332	504,037		115	63,555,443	5,991,725
16	2,746	335		41	41,171	3,947		66	496,254	46,826		91	5,902,831	556,499		116	70,170,840	6,615,397
17	3,115	369		42	45,529	4,358		67	547,953	51,699		92	6,517,253	614,422		117	77,474,828	7,303,988
18	3,523	408		43	50,339	4,810		68	605,032	57,079		93	7,195,629	678,376		118	85,539,082	8,064,254
19	3,973	450		44	55,649	5,310		69	668,051	63,019		94	7,944,614	748,985		119	94,442,737	8,903,655
20	4,470	497		45	61,512	5,863		70	737,627	69,576		95	8,771,558	826,944		120	104,273,167	9,830,430
21	5,018	548		46	67,983	6,471		71	814,445	76,818		96	9,684,577	913,019
22	5,624	606		47	75,127	7,144		72	899,257	84,812		97	10,692,629	1,008,052
23	6,291	667		48	83,014	7,887		73	992,895	93,638		98	11,805,606	1,112,977
24	7,028	737		49	91,721	8,707		74	1,096,278	103,383		99	13,034,431	1,228,825
25	7,842	814		50	101,333	9,612		75	1,210,421	114,143		100	14,391,160	1,356,729

Melvor Idle version v1.2.2 (Released: 15th November 2023)
Combat: Attack Strength Defence Hitpoints Ranged Magic Prayer Slayer
Skills: Woodcutting Fishing Firemaking Cooking Mining Smithing Thieving Farming Fletching Crafting Runecrafting Herblore Agility Summoning Astrology Township Cartography Archaeology Alternative Magic
Other: Beginners Guide Guides Bank Combat Mastery Money Making Shop Easter Eggs Pets Golbin Raid Full Version Throne of the Herald Atlas of Discovery
Reference Tables: Items, Equipment, Experience Table, Upgrading Items, Combat Areas, Slayer Areas, Dungeons, Chest Loot Tables, Monsters, Monster Loot Tables