Try This Standard Score to Percentile Rank Conversion Calculator

Do you have a standard score from an assessment such as an IQ test (e.g., WISC, WJ, RIAS), achievement test, (WIAT, KTEA), or speech-language assessment?

Are you looking for the percentile rank? I have made an easy way for you to grab it every single time!

Try the ‘Standard Score to Percentile Rank Conversion Calculator’ Below

Step 1. Open this Quick Standard Score to Percentile Rank Converter Calculator in Excel.

Step 2. Save it to your desktop and you have a permanent conversion calculator any time you need it. Just select your standard score from the dropdown, and voila! See the percentile rank appear on the right.

You can also find your percentile rank here in the table below by checking your standard score on the left and your percentile rank on the right.

Standard Score	Percentile Rank
50	<.1
51	<.1
52	0.1
53	0.1
54	0.1
55	0.1
56	0.1
57	0.1
58	0.2
59	0.3
60	0.4
61	0.5
62	1
63	1
64	1
65	1
66	1
67	1
68	2
69	2
70	2
71	3
72	3
73	4
74	4
75	5
76	5
77	6
78	7
79	8
80	9
81	10
82	12
83	13
84	14
85	16
86	18
87	19
88	21
89	23
90	25
91	27
92	30
93	32
94	34
95	37
96	40
97	42
98	45
99	47
100	50
101	53
102	55
103	58
104	61
105	63
106	66
107	68
108	70
109	73
110	75
111	77
112	79
113	81
114	82
115	84
116	86
117	87
118	88
119	90
120	91
121	92
122	93
123	94
124	95
125	95
126	96
127	96
128	97
129	97
130	98
131	98
132	98
133	99
134	99
135	99
136	99
137	99
138	99
139	99.5
140	99.6
141	99.7
142	99.7
143	99.8
144	99.8
145	99.9
146	99.9
147	99.9
148	99.9
149	>99.9
150	>99.9