Experience to level

== Shadowlands ==
Patch 9.0.1 squished levels from 120 down to 50.
Experience data has been sourced from gametables/xp.txt
{| class="darktable zebra" style="text-align: right"	Level 	XP
1 	250 	
2 	655 	
3 	1,265 	
4 	2,085 	
5 	3,240 	
6 	4,125 	
7 	4,785 	
8 	5,865 	
9 	7,275 	
10	8,205 	
11	9,365 	
12	10,715	
13	12,085	
14	13,455	
15	14,810	
16	16,135	
17	17,415	
18	18,635	
19	19,775	
20	20,825	
== Battle for Azeroth ==
Patch 8.1.0 reduced the time to level from 1 to 110 by approximately 25%.
{| class="darktable zebra" style="text-align: right"	Level 	XP 	XP
8.0.1	Level 	8.1.0 	
1 	400 	400 	
2 	900 	900 	
3 	1,400 	1,400 	
4 	2,100 	2,100 	
5 	2,800 	2,800 	
6 	3,800 	3,800 	
7 	5,000 	5,000 	
8 	6,400 	6,400 	
9 	8,100 	8,100 	
10 	9,240 	9,240 	
11 	10,780	10,780	
12 	13,230	13,230	
13 	16,800	16,800	
14 	20,380	20,380	
15 	24,440	24,440	
16 	28,080	28,080	
17 	31,500	31,500	
18 	34,800	34,800	
19 	38,550	38,550	
20 	42,320	41,260	
== Legion ==
Patch 7.3.5 introduced the level scaling system.
{| class="darktable zebra" style="text-align: right"	Level 	XP 	XP
7.0.3	Level 	7.3.5 	
1 	400 	400 	
2 	900 	900 	
3 	1,400 	1,400 	
4 	2,100 	2,100 	
5 	2,800 	2,800 	
6 	3,800 	3,800 	
7 	5,000 	5,000 	
8 	6,400 	6,400 	
9 	8,100 	8,100 	
10 	8,800 	9,240 	
11 	9,800 	10,780	
12 	11,500	13,225	
13 	14,000	16,800	
14 	16,300	20,375	
15 	18,800	24,440	
16 	20,800	28,080	
17 	22,500	31,500	
18 	24,000	34,800	
19 	25,700	38,550	
20 	27,300	42,315	
==Equations (out of date)==
The XP required to advance to the next level is found by:
 XP = ((8 × CL) + Diff(CL)) × MXP(CL) × RF(CL)
 where CL = the current Character Level
Note that the XP is always rounded down to the nearest hundred.
The function MXP(CL) is the basic amount of XP earned for killing a mob of level equal to the character (see also: Mob experience#Basic Formula)
 MXP(CL) = 45 + (5 × CL) (mobs in Eastern Kingdoms and Kalimdor)
 MXP(CL) = 235 + (5 × CL) (mobs in Outland)
 MXP(CL) = 580 + (5 × CL) (mobs in Northrend)
The function Diff(CL) is an extra difficulty factor that starts around level 30 and increases by level:
 Diff(CL) = 0, CL <= 28
 Diff(CL) = 1, CL = 29
 Diff(CL) = 3, CL = 30
 Diff(CL) = 6, CL = 31
 Diff(CL) = 5 x (CL-30), CL >= 32, <=59
The function RF(CL) is an extra difficulty reduction factor added in patch 2.3. It is:
 RF(CL) = 1, CL <= 10
 RF(CL) = (1-(CL-10)/100), 11 <= CL <= 27
 RF(CL) = .82, 28 <= CL <= 59
 RF(CL) = 1 60 <= CL
XP to Level can be described as the following function of the character level represented by x (if and only if the character is level 32-59):
 XP to Level = (65x2 - 165x - 6750) × .82
XP to Level for levels 11-27 can be found by:
 XP to Level = -.4x3 + 40.4x2 + 396x
For all levels lower then 11 the XP to Level can be expressed as the second grade function:
 XP to Level = 40x2 + 360x 
The XP to Level for 61-69 is:
 XP to Level = 155 + MXP(CL) x (1344 - ((69-CL)*(3+(69-CL)*4)))
For 60:
 XP to Level = 155 + MXP(CL) x (1344 - 69 - ((69-CL)*(3+(69-CL)*4)))
==Experience to level pre-7.0 (Post-Squish)==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 19,200" means that if you are level 22, you need a total of 19,200 XP to advance to level 23).
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	7,000 	21 	17,900	31 	33,300	41 	78,500 	51 	126,100	61 	275,000	71 	415,000	81 	487,000	91 	783,900
2 	900 	12 	7,700 	22 	19,200	32 	35,700	42 	82,800 	52 	131,500	62 	301,000	72 	422,000	82 	492,000	92 	790,400
3 	1,400 	13 	8,700 	23 	20,400	33 	38,400	43 	87,100 	53 	137,000	63 	328,000	73 	427,000	83 	497,000	93 	798,200
4 	2,100 	14 	9,700 	24 	21,800	34 	41,100	44 	91,600 	54 	142,500	64 	359,000	74 	432,000	84 	506,000	94 	807,300
5 	2,800 	15 	10,800	25 	23,100	35 	44,000	45 	96,300 	55 	148,200	65 	367,000	75 	438,000	85 	517,000	95 	815,100
6 	3,600 	16 	11,900	26 	24,400	36 	47,000	46 	101,000	56 	154,000	66 	374,000	76 	445,000	86 	545,000	96 	821,600
7 	4,500 	17 	13,100	27 	25,800	37 	49,900	47 	105,800	57 	159,900	67 	381,000	77 	455,000	87 	550,000	97 	830,700
8 	5,400 	18 	14,200	28 	27,100	38 	53,000	48 	110,700	58 	165,800	68 	388,000	78 	462,000	88 	556,000	98 	838,500
9 	6,500 	19 	15,400	29 	29,000	39 	56,200	49 	115,700	59 	172,000	69 	395,000	79 	474,000	89 	562,000	99 	846,300
10 	6,700 	20 	16,600	30 	31,000	40 	74,300	50 	120,900	60 	254,000	70 	405,000	80 	482,000	90 	774,800	100	—
==Experience to level by level (Pre-Squish)==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 19,200" means that if you are level 22, you need a total of 19,200 XP to advance to level 23). This is a compilation of the tables below with all current values. This also shows the difference (percent change) in current XP requirements as compared to before Patch 5.3. Note that this percentage, when added to one, is the same as RF(CL) (discrepancies are caused by rounding). 
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	6,960 	21 	17,920	31 	33,280	41 	78,500 	51 	126,100	61 	317,000	71 	821,000 	81 	2,121,500
2 	900 	12 	7,840 	22 	19,200	32 	35,680	42 	82,800 	52 	131,500	62 	349,000	72 	830,000 	82 	2,642,640
3 	1,400 	13 	8,800 	23 	20,400	33 	38,400	43 	87,100 	53 	13,7000	63 	386,000	73 	838,000 	83 	3,434,200
4 	2,100 	14 	9,840 	24 	21,760	34 	41,120	44 	91,600 	54 	142,500	64 	428,000	74 	847,000 	84 	4,582,500
5 	2,800 	15 	10,800	25 	23,120	35 	44,000	45 	96,300 	55 	148,200	65 	475,000	75 	855,300 	85 	8,670,000 (-33%)
6 	3,600 	16 	12,000	26 	24,400	36 	46,960	46 	101,000	56 	154,000	66 	527,000	76 	865,000 	86 	10,050,000 (-33%)
7 	4,500 	17 	13,120	27 	25,760	37 	49,920	47 	105,800	57 	159,900	67 	585,000	77 	873,000 	87 	12,650,000 (-33%)
8 	5,400 	18 	14,240	28 	21,120	38 	52,960	48 	110,700	58 	165,800	68 	648,000	78 	882,000 	88 	15,250,000 (-33%)
9 	6,500 	19 	15,400	29 	29,040	39 	56,160	49 	115,700	59 	172,000	69 	717,000	79 	891,000 	89 	18,370,000 (-33%)
10 	6,080 	20 	16,640	30 	31,040	40 	74,300	50 	120,900	60 	290,000	70 	812,700	80 	1,686,300	90 	—
==Experience to level pre-5.3==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 19,200" means that if you are level 22, you need a total of 19,200 XP to advance to level 23). This is a compilation of the tables below with all current values. This also shows the difference (percent change) in current XP requirements as compared to before Patch 5.0.4. Note that this percentage, when added to one, is the same as RF(CL) (discrepancies are caused by rounding). 
Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	6,960 (-20 %) 	21 	17,920 (-20 %)	31 	33,280 (-20 %)	41 	78,500 	51 	126,100	61 	317,000	71 	821,000 	81 	2,121,500
2 	900 	12 	7,840 (-20 %) 	22 	19,200 (-20 %)	32 	35,680 (-20 %)	42 	82,800 	52 	131,500	62 	349,000	72 	830,000 	82 	2,642,640 (-33 %)
3 	1,400 	13 	8,800 (-20 %) 	23 	20,400 (-20 %)	33 	38,400 (-20 %)	43 	87,100 	53 	13,7000	63 	386,000	73 	838,000 	83 	3,434,200 (-33 %)
4 	2,100 	14 	9,840 (-20 %) 	24 	21,760 (-20 %)	34 	41,120 (-20 %)	44 	91,600 	54 	142,500	64 	428,000	74 	847,000 	84 	4,582,500 (-50 %)
5 	2,800 	15 	10,800 (-20 %)	25 	23,120 (-20 %)	35 	44,000 (-20 %)	45 	96,300 	55 	148,200	65 	475,000	75 	855,300 	85 	13,000,000
6 	3,600 	16 	12,000 (-20 %)	26 	24,400 (-20 %)	36 	46,960 (-20 %)	46 	101,000	56 	154,000	66 	527,000	76 	865,000 	86 	15,080,000
7 	4,500 	17 	13,120 (-20 %)	27 	25,760 (-20 %)	37 	49,920 (-20 %)	47 	105,800	57 	159,900	67 	585,000	77 	873,000 	87 	18,980,000
8 	5,400 	18 	14,240 (-20 %)	28 	21,120 (-20 %)	38 	52,960 (-20 %)	48 	110,700	58 	165,800	68 	648,000	78 	882,000 	88 	22,880,000
9 	6,500 	19 	15,400 (-20 %)	29 	29,040 (-20 %)	39 	56,160 (-20 %)	49 	115,700	59 	172,000	69 	717,000	79 	891,000 	89 	27,560,000
10 	6,080 (-20 %)	20 	16,640 (-20 %)	30 	31,040 (-20 %)	40 	74,300 	50 	120,900	60 	290,000	70 	812,700	80 	1,686,300	90 	—
==Experience to level pre-MoP==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 24000" means that if you are level 22, you need a total of 24,000 XP to advance to level 23). This is a compilation of the tables below with all current values. This also shows the difference (percent change) in current XP requirements as compared to before Patch 4.3. Note that this percentage, when added to one, is the same as RF(CL) (discrepancies are caused by rounding). 
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	8,700 	21 	22,400	31 	41,600	41 	78,500 	51 	126,100	61 	317,000 	71 	821,000 (-33.3 %) 	81 	2,121,500
2 	900 	12 	9,800 	22 	24,000	32 	44,600	42 	82,800 	52 	131,500	62 	349,000 	72 	830,000 (-33.3 %) 	82 	4,004,000
3 	1,400 	13 	11,000	23 	25,500	33 	48,000	43 	87,100 	53 	13,7000	63 	386,000 	73 	838,000 (-33.3 %) 	83 	5,203,400
4 	2100 	14 	12,300	24 	27,200	34 	51,400	44 	91,600 	54 	142,500	64 	428,000 	74 	847,000* (-33.3 %)	84 	9,165,100
5 	2,800 	15 	13,600	25 	28,900	35 	55,000	45 	96,300 	55 	148,200	65 	475,000 	75 	855,300 (-33.3 %) 	85 	—
6 	3,600 	16 	15,000	26 	30,500	36 	58,700	46 	101,000	56 	154,000	66 	527,000 	76 	865,000 (-33.3 %) 	86 	—
7 	4,500 	17 	16,400	27 	32,200	37 	62,400	47 	105,800	57 	159,900	67 	585,000 	77 	873,000 (-33.3 %) 	87 	—
8 	5,400 	18 	17,800	28 	33,900	38 	66,200	48 	110,700	58 	165,800	68 	648,000 	78 	882,000 (-33.3 %) 	88 	—
9 	6,500 	19 	19,300	29 	36,300	39 	70,200	49 	115,700	59 	172,000	69 	717,000 	79 	891,000 (-33.3 %) 	89 	—
10 	7,600 	20 	20,800	30 	38,800	40 	74,300	50 	120,900	60 	290,000	70 	812,700* (-33.3 %)	80 	1,686,300 	90 	—
* = unconfirmed, estimated based on average 33.3% reduction of exp requirements.
==Experience to level pre-Cata==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 24000" means that if you are level 22, you need a total of 24,000 XP to advance to level 23). This is a compilation of the tables below with all current values. This also shows the difference (percent change) in current XP requirements as compared to before Wrath of the Lich King. Note that this percentage, when added to one, is the same as RF(CL) (discrepancies are caused by rounding). 
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	8,700 	21 	22,400	31 	41,600	41 	78,500 	51 	126,100 	61 	317,000 (-45 %)	71 	1,539,000
2 	900 	12 	9,800 	22 	24,000	32 	44,600	42 	82,800 	52 	131,500 	62 	349,000 (-43 %)	72 	1,555,700
3 	1,400 	13 	11,000	23 	25,500	33 	48,000	43 	87,100 	53 	137,000 	63 	386,000 (-41 %)	73 	1,571,800
4 	2,100 	14 	12,300	24 	27,200	34 	51,400	44 	91,600 	54 	142,500 	64 	428,000 (-37 %)	74 	1,587,900
5 	2,800 	15 	13,600	25 	28,900	35 	55,000	45 	96,300 	55 	148,200 	65 	475,000 (-33 %)	75 	1,604,200
6 	3,600 	16 	15,000	26 	30,500	36 	58,700	46 	101,000	56 	154,000 	66 	527,000 (-28 %)	76 	1,620,700
7 	4,500 	17 	16,400	27 	32,200	37 	62,400	47 	105,800	57 	159,900 	67 	585,000 (-22 %)	77 	1,637,400
8 	5,400 	18 	17,800	28 	33,900	38 	66,200	48 	110,700	58 	165,800 	68 	648,000 (-15 %)	78 	1,653,900
9 	6,500 	19 	19,300	29 	36,300	39 	70,200	49 	11,5700	59 	172,000 	69 	717,000 (-8 %) 	79 	1,670,800
10 	7,600 	20 	20,800	30 	38,800	40 	74,300	50 	120,900	60 	290,000 (-41 %)	70 	1,523,800 	80 	—
In Wrath, the XP needed to level (from 70 to 80) jumps again, but the amount of experience it takes to get to level 70 is reduced. The halfway point for 70-80 is 204100 XP into 75.
==Experience to level pre-4.3==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 24000" means that if you are level 22, you need a total of 24,000 XP to advance to level 23). This is a compilation of the tables below with all current values. This also shows the difference (percent change) in current XP requirements as compared to before Cataclysm. Note that this percentage, when added to one, is the same as RF(CL) (discrepancies are caused by rounding). 
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	8,700 	21 	22,400	31 	41,600	41 	78,500 	51 	126,100	61 	317,000 	71 	1232,000 (-20 %) 	81 	2,121,500
2 	900 	12 	9,800 	22 	24,000	32 	44,600	42 	82,800 	52 	131,500	62 	349,000 	72 	1,245,000 (-20 %)	82 	4,004,000
3 	1,400 	13 	11,000	23 	25,500	33 	48,000	43 	87,100 	53 	137,000	63 	386,000 	73 	1,257,000 (-20 %)	83 	5,203,400
4 	2,100 	14 	12,300	24 	27,200	34 	51,400	44 	91,600 	54 	142,500	64 	428,000 	74 	1,270,000 (-20 %)	84 	9,165,100
5 	2,800 	15 	13,600	25 	28,900	35 	55,000	45 	96,300 	55 	148,200	65 	475,000 	75 	1,283,000 (-20 %)	85 	—
6 	3,600 	16 	15,000	26 	30,500	36 	58,700	46 	101,000	56 	154,000	66 	527,000 	76 	1,297,000 (-20 %)	 	
7 	4,500 	17 	16,400	27 	32,200	37 	62,400	47 	105,800	57 	159,900	67 	585,000 	77 	1,310,000 (-20 %)	 	
8 	5,400 	18 	17,800	28 	33,900	38 	66,200	48 	110,700	58 	165,800	68 	648,000 	78 	1,323,000 (-20 %)	 	
9 	6,500 	19 	19,300	29 	36,300	39 	70,200	49 	115,700	59 	172,000	69 	717,000 	79 	1,337,000 (-20 %)	 	
10 	7,600 	20 	20,800	30 	38,800	40 	74,300	50 	120,900	60 	290,000	70 	1,219,000 (-20 %)	80 	1,686,300 	 	
==Experience to level pre-Wrath==
This table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 24000" means that if you are level 22, you need a total of 24,000 XP to advance to level 23). This also shows the difference (percent change) in current XP requirements as compared to before Patch 2.3.0. Note that this percentage, when added to one, is the same as RF(CL) (discrepancies are caused by rounding).
Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	8,700 (-1.1%) 	21 	22,400 (-11.1%)	31 	41,600 (-18.1%)	41 	78,500 (-18.1%) 	51 	126,100 (-18.1%)	61 	574,700
2 	900 	12 	9,800 (-3.0%) 	22 	24,000 (-12.1%)	32 	44,600 (-18.2%)	42 	82,800 (-18.0%) 	52 	131,500 (-18.0%)	62 	614,400
3 	1,400 	13 	11,000 (-3.5%) 	23 	25,500 (-13.3%)	33 	48,000 (-18.1%)	43 	87,100 (-18.1%) 	53 	137,000 (-18.0%)	63 	650,300
4 	2,100 	14 	12,300 (-4.7%) 	24 	27,200 (-14.2%)	34 	51,400 (-18.2%)	44 	91,600 (-18.1%) 	54 	142,500 (-18.1%)	64 	682,300
5 	2,800 	15 	13,600 (-5.6%) 	25 	28,900 (-15.0%)	35 	55,000 (-18.0%)	45 	96,300 (-18.8%) 	55 	148,200 (-18.0%)	65 	710,200
6 	3,600 	16 	15,000 (-6.3%) 	26 	30,500 (-16.2%)	36 	58,700 (-18.0%)	46 	101,000 (-18.0%)	56 	154,000 (-18.0%)	66 	734,100
7 	4,500 	17 	16,400 (-7.3%) 	27 	32,200 (-17.2%)	37 	62,400 (-18.0%)	47 	105,800 (-18.0%)	57 	159,900 (-18.0%)	67 	753,700
8 	5,400 	18 	17,800 (-8.2%) 	28 	33,900 (-18.1%)	38 	66,200 (-18.1%)	48 	110,700 (-18.1%)	58 	165,800 (-18.0%)	68 	768,900
9 	6,500 	19 	19,300 (-9.4%) 	29 	36,300 (-18.1%)	39 	70,200 (-18.1%)	49 	115,700 (-18.1%)	59 	172,000 (-18.1%)	69 	779,700
10 	7,600 	20 	20,800 (-10.3%)	30 	38,800 (-18.1%)	40 	74,300 (-18.1%)	50 	120,900 (-18.2%)	60 	494,000 	70 	—
* The total experience needed to reach level 60 is 3,379,400. This is a decrease of 705,300 experience from pre-2.3.0.
* The total experience needed to reach level 70 after level 60 is 6,268,300.
* The total experience needed to reach maximum level (70) is 10,141,700 (3,379,400+494,000+6,268,300).
==Pre-2.3 table==
This table shows the experience needed to advance, by level, before Patch 2.3.0. The table shows the character's current level and the amount of XP required to advance to the next level (e.g. "22: 27300" means that if you are level 22, you need a total of 27,300 XP to advance to level 23).
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	8,800 	21 	25,200	31 	50,800	41 	95,800 	51 	153,900	61 	574,700
2 	900 	12 	10,100	22 	27,300	32 	54,500	42 	101,000	52 	160,400	62 	614,400
3 	1,400 	13 	11,400	23 	29,400	33 	58,600	43 	106,300	53 	167,100	63 	650,300
4 	2,100 	14 	12,900	24 	31,700	34 	62,800	44 	111,800	54 	173,900	64 	682,300
5 	2,800 	15 	14,400	25 	34,000	35 	67,100	45 	117,500	55 	180,800	65 	710,200
6 	3,600 	16 	16,000	26 	36,400	36 	71,600	46 	123,200	56 	187,900	66 	734,100
7 	4,500 	17 	17,700	27 	38,900	37 	76,100	47 	129,100	57 	195,000	67 	753,700
8 	5,400 	18 	19,400	28 	41,400	38 	80,800	48 	135,100	58 	202,300	68 	768,900
9 	6,500 	19 	21,300	29 	44,300	39 	85,700	49 	141,200	59 	209,800	69 	779,700
10 	7,600 	20 	23,200	30 	47,400	40 	90,700	50 	147,500	60 	494,000	70 	—
The total experience needed to reach level 60 was 4,084,700. The total for 60 to 70 was 6,762,300, making 1 to 70 10,847,000 points in total.
The total number of same-level mobs that must be killed to reach level 60 with no rest or quests was 16,971 which would take approximately 76 hours at 16 seconds per kill.
An amusing but probably not very significant figure is that the half-way point to 60 for raw experience point accumulation is 12,550 XP into level 48. Halfway to 70 for raw experience point accumulation is 344,500 XP into level 62. In actual practice, quests contribute significantly to XP so the half-way point is somewhere below this.
==Vanilla / Classic table==
This table shows the experience needed to advance, by level, during the original vanilla WoW and Classic WoW. 
Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP	Lvl	Max XP 	Lvl	Max XP
1 	400 	11 	8,800 	21 	25,200	31 	50,800	41 	95,800 	51 	153,900
2 	900 	12 	10,100	22 	27,300	32 	54,500	42 	101,000	52 	160,400
3 	1,400 	13 	11,400	23 	29,400	33 	58,600	43 	106,300	53 	167,100
4 	2,100 	14 	12,900	24 	31,700	34 	62,800	44 	111,800	54 	173,900
5 	2,800 	15 	14,400	25 	34,000	35 	67,100	45 	117,500	55 	180,800
6 	3,600 	16 	16,000	26 	36,400	36 	71,600	46 	123,200	56 	187,900
7 	4,500 	17 	17,700	27 	38,900	37 	76,100	47 	129,100	57 	195,000
8 	5,400 	18 	19,400	28 	41,400	38 	80,800	48 	135,100	58 	202,300
9 	6,500 	19 	21,300	29 	44,300	39 	85,700	49 	141,200	59 	209,800
10 	7,600 	20 	23,200	30 	47,400	40 	90,700	50 	147,500	60 	217,400
==Rest XP==
The maximum amount of "rest" that one can accumulate on a character is 150% of XP for the current level, (or 30 "bubbles") half of which is "earned" XP and half of which is "bonus" XP. This is because, every time you kill a mob, both the earned XP and the bonus XP is deducted from your rest. So, for example, if you are lvl 10 and 80% through the level (or 6080/7600) the maximum rest would be 11400. If you grind mobs until your rest is gone (and complete no quests), it will take you to level 12 at 1180/9800, or 12% through level 12, having earned 5700 XP from killing mobs and gotten 5700 XP "free" for being rested. Keep in mind that quest (and discovery) XP does not count against your rest. Watch your rest marker when turning in a quest, and you will see it jump by the same amount as did your current XP.
==Wrath of the Lich King and Cataclysm XP Reductions==
The below 60-69 XP Values are for Beta Build 9014 with the changes to 60-70 leveling for the expansion. 
The 70-79 XP Values are for Beta Build 8926.
The XP needed to level from 70 to 80 has been reduced by 20% with patch 4.0.3a.
Lvl 	Max XP (%Change) 	Lvl	Max XP
60 	290,000 (-41.3%) 	70 	1,219,000 (-20.8%)
61 	317,000 (-44.8%) 	71 	1,232,000 (-20.0%)
62 	349,000 (-43.2%) 	72 	1,245,000 (-20.0%)
63 	386,000 (-40.6%) 	73 	1,257,000 (-20.0%)
64 	428,000 (-37.3%) 	74 	1,270.000 (-20.0%)
65 	475,000 (-33.1%) 	75 	1,604,200
66 	527,000 (-28.2%) 	76 	1,620,700
67 	585,000 (-22.4%) 	77 	1,310,000 (-20.0%)
68 	648,000 (-15.7%) 	78 	1,323,000 (-20.0%)
69 	717,000 (-08.0%) 	79 	1,337,000 (-20.0%)
Tot 	4,722,000 (-30.2%)	Tot	15,965,800
1-80	26,106,500 	 	
With Patch 4.3.0, the required experience for level 70 to 80 has been reduced again by roughly 33%. This has been the second and final reduction in Cataclysm. This table shows the updated values from level 70 to 80.
Lvl	Max XP
70 	813,000
71 	821,000
72 	830,000
73 	838,000
74 	847,000
75 	855,000
76 	865,000
77 	873,000
78 	882,000
79 	891,000
Tot	8,515,000
Category:Formulas and game mechanics
fr:Formule:XP jusqu'au prochain niveau