Visualising brightness (2024)

Dr Alan D. Thompson left his position as Chairman of Mensa International's Gifted Families in 2020, after seeing the capabilities of GPT-3 outperforming his prodigy clients. (Read his 2020 paper, The New Irrelevance of Intelligence, and watch his 2021 presentation to the World Gifted Conference featuring Leta AI backed by GPT-3). This year, artificial intelligence is now far smarter than humans across many metrics, including testing on Raven's Progressive Matrices. Join subscribers from RAND, Pearson (Wechsler), Tesla, Microsoft, and Google AI for Dr Alan's monthly updates on integrated AI:
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IQ chart
IQ mental age
Summary IQ percentile and rarity
Convert confidence interval to percentile and IQ score
Full IQ Percentile and Rarity Chart

IQ chart

Download IQ chart (PDF – A4 printable)

IQ mental age

Chronological & Mental Ages of Gifted Children
Download Mental Ages of Gifted Children chart (PDF – A4 printable)

To cite this chart: Thompson, A. D. (2019). Chronological & Mental Ages of Gifted Children. Life Architect.

Summary IQ percentile and rarity

IQ table (uses 15SD as in Wechsler)
Most numbers have been rounded to nearest significant figure.

IQ	Percentile	Top %	1 in…
120	90.87	9.13	11
125	95.2	4.8	21
130	97.7	2.3	44
135	99	1	102
140	99.6	0.4	261
145	99.86	0.14	741
150	99.95	0.05	2,330
155	99.98	0.02	8,137
160	99.996	0.004	31,560
165	99.9992	0.0008	136,074
170	99.9998	0.0002	652,598
175	99.99997	0.00003	3.5 million
180	99.999995	0.000005	20.7 million
185	99.9999992	0.0000008	137 million
190	99.999999901	0.000000099	1 billion
195	99.99999998	0.00000002	8.3 billion
200	99.999999998	0.000000002	76 billion

Convert confidence interval to percentile and IQ score (Wechsler)

From the WISC-V technical report (August, 2015).

FSIQ	Percentile Rank	90% Confidence Interval	95% Confidence Interval
120	91	114-124	113-125
125	95	119-129	118-130
130	98	123-134	122-135
135	99	128-138	127-139
140	99.6	133-143	132-144
146	99.9	138-149	137-150
150	>99.9	142-153	141-154
155	>99.9	147-157	146-158
FSIQ	Percentile Rank	90% Confidence Interval	95% Confidence Interval

Show more detail for confidence interval to percentile and score

FSIQ	Percentile Rank	90% Confidence Interval	95% Confidence Interval
120	91	114-124	113-125
122	93	116-126	115-127
124	95	118-128	117-129
125	95	119-129	118-130
126	96	119-130	118-131
127	96	120-131	119-132
128	97	121-132	120-133
130	98	123-134	122-135
131	98	124-135	123-136
132	98	125-136	124-137
133	99	126-137	125-138
134	99	127-138	126-139
135	99	128-138	127-139
136	99	129-139	128-140
137	99	130-140	129-141
138	99	131-141	130-142
140	99.6	133-143	132-144
141	99.7	134-144	133-145
142	99.7	135-145	135-146
143	99.8	136-146	135-147
144	99.8	137-147	136-148
146	99.9	138-149	137-150
147	99.9	139-150	138-151
148	99.9	140-151	139-152
149	99.9	141-152	140-153
150	>99.9	142-153	141-154
151	>99.9	143-154	142-155
152	>99.9	144-155	143-156
153	>99.9	145-156	144-157
154	>99.9	146-157	145-158
155	>99.9	147-157	146-158
FSIQ	Percentile Rank	90% Confidence Interval	95% Confidence Interval

Full IQ Percentile and Rarity Chart

The table below is an archive backup of the IQ table originally published by Rodrigo de la Jara at iqcomparisonsite.com/iqtable.aspx [website is down as of Oct/2021].

These are IQs, their percentiles, and rarity on a 15 SD (e.g. Wechsler) and 16 SD (e.g. Stanford-Binet) scale. They were calculated using the NORMDIST function in Excel. The number of decimal places for the rarity was varied in the hope it might be useful. You can see why presently nobody should be able to get a deviation IQ higher than 195 (or 201 on the 16 SD scale). There are not enough people in the world to ‘beat’. Note that rarities given are of people that have a certain IQ or higher. Some people might find it more useful to know the rarity of people that have a certain IQ or lower. In that case use this example as a guide: If you want to know how many people have IQs of 84 or lower, look at the rarity of people that have an IQ of 116 or higher. (100 – 84 = 16. 100 + 16 = 116).

IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
202	99.9999999995%	190,057,377,928	99.9999999908%	10,881,440,294
201	99.9999999992%	119,937,672,336	99.9999999862%	7,252,401,045
200	99.9999999987%	76,017,176,740	99.9999999794%	4,852,159,346
199	99.9999999979%	48,390,420,202	99.9999999693%	3,258,706,819
198	99.9999999968%	30,938,221,975	99.9999999545%	2,196,908,409
197	99.9999999950%	19,866,426,228	99.9999999327%	1,486,736,899
196	99.9999999922%	12,812,462,045	99.9999999010%	1,009,976,678
195	99.9999999880%	8,299,126,114	99.9999998548%	688,720,101
194	99.9999999815%	5,399,067,340	99.9999997879%	471,441,334
193	99.9999999717%	3,527,693,270	99.9999996913%	323,940,499
192	99.9999999568%	2,314,980,850	99.9999995524%	223,436,817
191	99.9999999345%	1,525,765,721	99.9999993536%	154,701,783
190	99.9999999010%	1,009,976,678	99.9999990699%	107,519,234
189	99.9999998511%	671,455,130	99.9999986669%	75,011,253
188	99.9999997770%	448,336,263	99.9999980964%	52,530,944
187	99.9999996674%	300,656,786	99.9999972920%	36,927,646
186	99.9999995062%	202,496,482	99.9999961624%	26,057,620
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
185	99.9999992699%	136,975,305	99.9999945820%	18,457,107
184	99.9999989254%	93,056,001	99.9999923799%	13,123,126
183	99.9999984250%	63,492,548	99.9999893231%	9,366,012
182	99.9999977016%	43,508,721	99.9999850966%	6,709,882
181	99.9999966604%	29,943,596	99.9999792755%	4,825,216
180	99.9999951684%	20,696,863	99.9999712895%	3,483,046
179	99.9999930398%	14,367,357	99.9999603760%	2,523,720
178	99.9999900166%	10,016,587	99.9999455198%	1,835,530
177	99.9999857417%	7,013,455	99.9999253755%	1,340,043
176	99.9999797237%	4,931,877	99.9998981672%	982,001
175	99.9999712895%	3,483,046	99.9998615605%	722,337
174	99.9999595211%	2,470,424	99.9998125011%	533,337
173	99.9999431733%	1,759,737	99.9997470088%	395,271
172	99.9999205647%	1,258,887	99.9996599197%	294,048
171	99.9998894360%	904,454	99.9995445629%	219,569
170	99.9998467663%	652,598	99.9993923584%	164,571
169	99.9997885357%	472,893	99.9991923180%	123,811
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
168	99.9997094213%	344,141	99.9989304314%	93,496
167	99.9996024097%	251,515	99.9985889129%	70,867
166	99.9994583047%	184,606	99.9981452833%	53,917
165	99.9992651083%	136,074	99.9975712563%	41,174
164	99.9990072440%	100,730	99.9968313965%	31,560
163	99.9986645903%	74,883	99.9958815099%	24,281
162	99.9982112841%	55,906	99.9946667250%	18,750
161	99.9976142490%	41,916	99.9931192192%	14,533
160	99.9968313965%	31,560	99.9911555410%	11,307
159	99.9958094411%	23,863	99.9886734737%	8,829
158	99.9944812644%	18,120	99.9855483883%	6,920
157	99.9927627566%	13,817	99.9816290270%	5,443
156	99.9905490555%	10,581	99.9767326626%	4,298
155	99.9877101029%	8,137	99.9706395788%	3,406
154	99.9840854286%	6,284	99.9630868216%	2,709
153	99.9794780761%	4,873	99.9537611786%	2,163
152	99.9736475807%	3,795	99.9422913506%	1,733
151	99.9663019177%	2,968	99.9282392963%	1,394
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
150	99.9570883466%	2,330	99.9110907427%	1,125
149	99.9455830880%	1,838	99.8902448799%	911
148	99.9312797919%	1,455	99.8650032777%	741
147	99.9135767802%	1,157	99.8345580959%	604
146	99.8917630764%	924	99.7979796890%	495
145	99.8650032777%	741	99.7542037453%	407
144	99.8323213712%	596	99.7020181412%	336
143	99.7925836483%	482	99.6400497338%	278
142	99.7444809358%	391	99.5667513617%	231
141	99.6865104294%	319	99.4803893690%	192
140	99.6169574875%	261	99.3790320141%	161
139	99.5338778217%	215	99.2605391688%	135
138	99.4350805958%	177	99.1225537500%	114
137	99.3181130218%	147	98.9624953632%	96
136	99.1802471131%	122	98.7775566587%	82
135	99.0184693146%	102	98.5647029151%	70
134	98.8294737819%	85	98.3206753694%	60
133	98.6096601092%	72	98.0419987942%	51
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
132	98.3551363216%	61	97.7249937964%	44
131	98.0617279292%	52	97.3657942589%	38
130	97.7249937964%	44	96.9603702812%	33
129	97.3402495072%	38	96.5045568849%	29
128	96.9025987934%	32	95.9940886433%	25
127	96.4069734486%	28	95.4246402670%	22
126	95.8481819706%	24	94.7918730337%	19
125	95.2209669590%	21	94.0914867949%	17
124	94.5200710546%	18	93.3192771207%	15
123	93.7403109348%	16	92.4711969715%	13
122	92.8766585983%	14	91.5434221090%	12
121	91.9243288744%	12	90.5324192858%	11
120	90.8788718026%	11	89.4350160914%	9
119	89.7362682436%	10	88.2484711894%	9
118	88.4930268282%	9	86.9705435536%	8
117	87.1462801289%	8	85.5995592220%	7
116	85.6938777630%	7	84.1344740241%	6
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
115	84.1344740241%	6.30297414356	82.5749307167%	5.7388581000
114	82.4676075848%	5.70372814115	80.9213089868%	5.2414497373
113	80.6937708458%	5.17967538878	79.1747668425%	4.8018670064
112	78.8144666062%	4.72020213705	77.3372720270%	4.4125314534
111	76.8322499196%	4.31634490415	75.4116222443%	4.0669620824
110	74.7507532660%	3.96051419092	73.4014531849%	3.7596038872
109	72.5746935061%	3.64626736341	71.3112335745%	3.4856849025
108	70.3098594977%	3.36812148102	69.1462467364%	3.2410967685
107	67.9630797074%	3.12139865776	66.9125584538%	3.0222947235
106	65.5421696587%	2.90209798497	64.6169712244%	2.8262136810
105	63.0558595794%	2.70678919205	62.2669653200%	2.6501976543
104	60.5137031432%	2.53252414027	59.8706273779%	2.4919402788
103	57.9259687167%	2.37676298063	57.4365675495%	2.3494345790
102	55.3035150084%	2.23731239758	54.9738265155%	2.2209304558
101	52.6576534466%	2.11227383685	52.4917739192%	2.1048986302
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
100	49.9999999782%	1.99999999913	49.9999999782%	1.9999999991
99	47.3423465534%	1.89905917668	47.5082260808%	1.9050604034
98	44.6964849916%	1.80820333002	45.0261734845%	1.8190474693
97	42.0740312833%	1.72634143572	42.5634324505%	1.7410511155
96	39.4862968568%	1.65251826951	40.1293726221%	1.6702681161
95	36.9441404206%	1.58589543727	37.7330346800%	1.6059880144
94	34.4578303413%	1.52573527121	35.3830287756%	1.5475810473
93	32.0369202926%	1.47138711828	33.0874415462%	1.4944877660
92	29.6901405023%	1.42227563409	30.8537532636%	1.4462100941
91	27.4253064939%	1.37789076562	28.6887664255%	1.4023036061
90	25.2492467340%	1.33777916116	26.5985468151%	1.3623708477
89	23.1677500804%	1.30153679093	24.5883777557%	1.3260555472
88	21.1855333938%	1.26880259813	22.6627279730%	1.2930375921
87	19.3062291542%	1.23925302972	20.8252331575%	1.2630286642
86	17.5323924152%	1.21259732068	19.0786910132%	1.2357684429
85	15.8655259759%	1.18857342558	17.4250692833%	1.2110213007
84	14.3061222370%	1.16694450771	15.8655259759%	1.1885734256
83	12.8537198711%	1.14749590978	14.4004407780%	1.1682303146
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
82	11.5069731718%	1.13003254137	13.0294564464%	1.1498145914
81	10.2637317564%	1.11437662784	11.7515288106%	1.1331641064
80	9.1211281974%	1.10036577278	10.5649839086%	1.1181302847
79	8.0756711256%	1.08785129274	9.4675807142%	1.1045766896
78	7.1233414017%	1.07669678808	8.4565778910%	1.0923777776
77	6.2596890652%	1.06677691809	7.5288030285%	1.0814178174
76	5.4799289454%	1.05797635237	6.6807228793%	1.0715899553
75	4.7790330410%	1.05018887325	5.9085132051%	1.0627954070
74	4.1518180294%	1.04331660699	5.2081269663%	1.0549427583
73	3.5930265514%	1.03726936365	4.5753597330%	1.0479473616
72	3.0974012066%	1.03196406748	4.0059113567%	1.0417308129
71	2.6597504928%	1.02732426212	3.4954431151%	1.0362204981
70	2.2750062036%	1.02327967611	3.0396297188%	1.0313491967
69	1.9382720708%	1.01976583639	2.6342057411%	1.0270547348
68	1.6448636784%	1.01672371917	2.2750062036%	1.0232796761
67	1.3903398908%	1.01409942889	1.9580012058%	1.0199710454
66	1.1705262181%	1.01184389811	1.6793246306%	1.0170800762
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
65	0.9815306854%	1.00991260208	1.4352970849%	1.0145619785
64	0.8197528869%	1.00826528377	1.2224433413%	1.0123757196
63	0.6818869782%	1.006865686	1.0375046368%	1.0104838164
62	0.5649194042%	1.00568128874	0.8774462500%	1.0088521352
61	0.4661221783%	1.00468305052	0.7394608312%	1.0074496959
60	0.3830425125%	1.0038451537	0.6209679859%	1.0062484809
59	0.3134895706%	1.00314475418	0.5196106310%	1.0052232469
58	0.2555190642%	1.00256173637	0.4332486383%	1.0043513385
57	0.2074163517%	1.00207847461	0.3599502662%	1.0036125059
56	0.1676786288%	1.00167960262	0.2979818588%	1.0029887244
55	0.1349967223%	1.0013517921	0.2457962547%	1.0024640190
54	0.1082369236%	1.00108354203	0.2020203110%	1.0020242926
53	0.0864232198%	1.00086497974	0.1654419041%	1.0016571607
52	0.0687202081%	1.00068767465	0.1349967223%	1.0013517921
51	0.0544169120%	1.0005444654	0.1097551201%	1.0010987571
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
50	0.0429116534%	1.00042930075	0.0889092573%	1.0008898838
49	0.0336980823%	1.00033709442	0.0717607037%	1.0007181224
48	0.0263524193%	1.00026359366	0.0577086494%	1.0005774197
47	0.0205219239%	1.00020526136	0.0462388214%	1.0004626021
46	0.0159145714%	1.00015917105	0.0369131784%	1.0003692681
45	0.0122898971%	1.00012291408	0.0293604212%	1.0002936904
44	0.0094509445%	1.00009451838	0.0232673374%	1.0002327275
43	0.0072372434%	1.00007237767	0.0183709730%	1.0001837435
42	0.0055187356%	1.0000551904	0.0144516117%	1.0001445370
41	0.0041905589%	1.00004190735	0.0113265263%	1.0001132781
40	0.0031686035%	1.00003168704	0.0088444590%	1.0000884524
39	0.0023857510%	1.00002385808	0.0068807808%	1.0000688125
38	0.0017887159%	1.00001788748	0.0053332750%	1.0000533356
37	0.0013354097%	1.00001335428	0.0041184901%	1.0000411866
36	0.0009927560%	1.00000992766	0.0031686035%	1.0000316870
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
35	0.0007348917%	1.00000734897	0.0024287437%	1.0000242880
34	0.0005416953%	1.00000541698	0.0018547167%	1.0000185475
33	0.0003975903%	1.00000397592	0.0014110871%	1.0000141111
32	0.0002905787%	1.0000029058	0.0010695686%	1.0000106958
31	0.0002114643%	1.00000211465	0.0008076820%	1.0000080769
30	0.0001532337%	1.00000153234	0.0006076416%	1.0000060765
29	0.0001105640%	1.00000110564	0.0004554371%	1.0000045544
28	0.0000794353%	1.00000079435	0.0003400803%	1.0000034008
27	0.0000568267%	1.00000056827	0.0002529912%	1.0000025299
26	0.0000404789%	1.00000040479	0.0001874989%	1.0000018750
25	0.0000287105%	1.00000028711	0.0001384395%	1.0000013844
24	0.0000202763%	1.00000020276	0.0001018328%	1.0000010183
23	0.0000142583%	1.00000014258	0.0000746245%	1.0000007462
22	0.0000099834%	1.00000009983	0.0000544802%	1.0000005448
21	0.0000069602%	1.0000000696	0.0000396240%	1.0000003962
20	0.0000048317%	1.00000004832	0.0000287105%	1.0000002871
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
19	0.0000033396%	1.0000000334	0.0000207245%	1.0000002072
18	0.0000022984%	1.00000002298	0.0000149034%	1.0000001490
17	0.0000015750%	1.00000001575	0.0000106769%	1.0000001068
16	0.0000010746%	1.00000001075	0.0000076201%	1.0000000762
15	0.0000007301%	1.0000000073	0.0000054180%	1.0000000542
14	0.0000004938%	1.00000000494	0.0000038376%	1.0000000384
13	0.0000003326%	1.00000000333	0.0000027080%	1.0000000271
12	0.0000002230%	1.00000000223	0.0000019036%	1.0000000190
11	0.0000001489%	1.00000000149	0.0000013331%	1.0000000133
10	0.0000000990%	1.00000000099	0.0000009301%	1.0000000093
9	0.0000000655%	1.00000000066	0.0000006464%	1.0000000065
8	0.0000000432%	1.00000000043	0.0000004476%	1.0000000045
7	0.0000000283%	1.00000000028	0.0000003087%	1.0000000031
6	0.0000000185%	1.00000000019	0.0000002121%	1.0000000021
IQ	15 SD Percentile	Rarity: 1/X	16 SD Percentile	Rarity: 1/X
5	0.0000000120%	1.00000000012	0.0000001452%	1.0000000015
4	0.0000000078%	1.00000000008	0.0000000990%	1.0000000010
3	0.0000000050%	1.00000000005	0.0000000673%	1.0000000007
2	0.0000000032%	1.00000000003	0.0000000455%	1.0000000005
1	0.0000000021%	1.00000000002	0.0000000307%	1.0000000003

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Dr Alan D. Thompson is an AI expert and consultant, advising Fortune 500s and governments on post-2020 large language models. His work on artificial intelligence has been featured at NYU, with Microsoft AI and Google AI teams, at the University of Oxford’s 2021 debate on AI Ethics, and in the Leta AI (GPT-3) experiments viewed more than 4.5 million times. A contributor to the fields of human intelligence and peak performance, he has held positions as chairman for Mensa International, consultant to GE and Warner Bros, and memberships with the IEEE and IET. Technical highlights.

This page last updated: 29/Nov/2023. https://lifearchitect.ai/visualising-brightness/↑

AI + IQ testing (human vs AI)
GPT-4
The new irrelevance of intelligence

FAQs

How to answer an IQ test easily? ›

Strategies For Taking And Passing IQ Tests

All Sorts Of Multiple Choice Questions. ...
Answering Strategies For Multiple Choice Questions. ...
Read And Understand The Question. ...
Check All The Options Before Choosing. ...
Utilise The Process of Elimination. ...
Don't Look Too Deeply At The Question's Meaning. ...
Absolutes Are Not Your Friends.

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May 12, 2022

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Does good visual perception mean high IQ? ›

That doesn't mean snappy, efficient visual processing leads to smarts, said study co-author Duje Tadin, a neuroscientist at the University of Rochester in New York. Instead, common brain processes may underlie both intelligence and efficient visual processing.

What is the IQ of 134 in Mensa? ›

Mensa, for example, typically requires a score in the top 2 percent, which is usually 132 or higher [1]. Achieving an IQ score of 134 would meet the criteria for membership in such societies, providing opportunities for networking and engaging with intellectually like-minded individuals.

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How rare is an IQ of 148? ›

Verbal skills, nonverbal skills, spatial skills. He has a 148 IQ,” said Mary. That number places him in the top 2% of the population. As a reference point, Albert Einstein had an IQ around 160.

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What if you get 100% on an IQ test? ›

If you were measured by a psychologist, using a professional IQ test, it means that you are above 97% of the population represented by the norming group. If you took a US test, that would be relative to the presumed population mix in the US. The norming is always done to produce and IQ of 100 at the mean.

What IQ is top 2% Mensa? ›

The number actually represents how your results compare to those of other people your age. A score of 116 or more is considered above average. A score of 130 or higher signals a high IQ. Membership in Mensa, the High IQ society, includes people who score in the top 2 percent, which is usually 132 or higher.

Is 132 IQ gifted? ›

Although IQ represents only a partial expression of giftedness, according to a purely psychometric view, giftedness is defined by an IQ of 130 or higher, placing gifted individuals at least two standard deviations above the population mean.

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What is the top 1% IQ? ›

An average person scores 100 on an IQ test using the Stanford-Binet IQ scale. A score of 137 to 160 is considered the top 1 percent to . 01 percent of all scorers. Frank Lawlis, director of psychological testing for American Mensa, also joined the discussion on The Daily Circuit.

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Is an IQ of 127 gifted? ›

85 to 114: Average intelligence. 115 to 129: Above average or bright. 130 to 144: Moderately gifted. 145 to 159: Highly gifted.

What is average IQ of Americans? ›

What's the Average IQ in the USA? According to recent data (around 2022), the average IQ in the United States falls around 98. It's important to remember that IQ tests are designed to have an average score of 100, so a slight deviation is expected.

How can I measure my IQ easily? ›

9 reliable IQ tests

Wechsler adult intelligence scale (WAIS) ...
Mensa practice test. ...
Stanford-Binet intelligence scales (SBIS) ...
Brain metrics initiative (BMI) online IQ test. ...
Woodco*ck-Johnson (WJ) test of cognitive abilities. ...
IQ test labs. ...
Raven's progressive matrices (RPM) ...
Psychtests.

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How can I score more on my IQ test? ›

They include:

Learn to play a musical instrument. One study found that musicians have an enhanced working memory when compared to non-musicians. ...
Practice memory activities. ...
Practice your visuospatial skills. ...
Learn a new language. ...
Read more books. ...
Practice executive control activities. ...
Improve your relational skills. ...
Study.

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Sep 30, 2022

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How to do well at an IQ test? ›

Tips for taking an IQ test

Read the instructions carefully. Read thoroughly to know exactly what the purpose of the test is. ...
Calculate your time. Calculate your time. ...
Skip hard questions. ...
Don't guess recklessly. ...
Go over your answers at the end.

How can I give myself an IQ test? ›

One of the most well-known online exams available to you is Free-IQTest.net. It has 20 questions that will measure your IQ score accurately. After this test, you have to give your birth date since the test calculates your IQ score based on your age. This way, you may compare yourself to your peers.

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