Percentile Calculator
Find the percentile rank of a value in a dataset, or the value at any percentile.
Last updated: August 2026
Comma-separated numbers, e.g. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
The value whose percentile rank to find.
Percentile rank
50th
of values at or below
Value at P90
9
Nearest-rank
Value at P50
5
Value at P75
8
Percentile rank = percentage of data at or below the value. The 90th percentile is the value below which 90% of data falls.
How it works
Percentile rank = (count of values ≤ value) ÷ n × 100. Value at p-th percentile = nearest-rank method.
Example: value 5 in 1–10 → 50th percentile; P90 = 9.
Frequently Asked Questions
What does the 90th percentile mean?
A value at the 90th percentile is higher than 90% of the data. For example, scoring 90th percentile on a test means you beat 90% of test-takers.
How is percentile rank calculated?
It is the percentage of data points at or below your value: (count of values ≤ value) ÷ total count × 100.
Is percentile the same as percentage?
No. A percentage is a score out of 100; a percentile is a rank relative to other values. 80% on a test is not the same as the 80th percentile.
How are percentiles and quartiles related?
Quartiles split data into four equal parts: Q1 is the 25th percentile, Q2 (the median) is the 50th, and Q3 is the 75th.