Percentile Calculator
Find the percentile rank of a value in a dataset, or the value at any percentile. Useful for test scores, salaries and benchmarks.
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.
Last updated: January 2026
How this calculator is verified
Checked by True Calculator automated test suite on
- Formula verified against a published worked example in the automated test suite
- Edge cases (zero, negative, boundary and unit-mismatch inputs) covered by unit tests
The full verification method is on our how we verify page. Found an error? Tell us and we will re-check it.
When to Use This Calculator
Ten students scored 45, 52, 58, 61, 67, 70, 78, 82, 88 and 94 in a test. A score of 78 equals or beats 7 of the 10 scores, so its percentile rank is 70. Asked the other way round, the 90th percentile of this dataset is 88. Enter your class test scores, salary figures or delivery times to see where a particular value stands, or specify a percentile to find the value that sits at that level. Percentile ranks are about position within the group, not the raw score itself.
How to Use This Calculator
- Step 1: Enter the full dataset, one value per line or separated by commas.
- Step 2: For percentile rank, enter the specific value whose standing you want to find.
- Step 3: Read the percentile rank, which is the percentage of values at or below your value.
- Step 4: To go the other way, enter a percentile such as 90 and read the dataset value that sits at that level.
Worked Example
Ten students scored 45, 52, 58, 61, 67, 70, 78, 82, 88 and 94 in a test. A score of 78 equals or beats 7 of the 10 scores, so its percentile rank is 70. Asked the other way round, the 90th percentile of this dataset is 88. Enter your class test scores, salary figures or delivery times to see where a particular value stands, or specify a percentile to find the value that sits at that level. Percentile ranks are about position within the group, not the raw score itself.
Tips and Common Mistakes
- •Tip 1: Remember that a percentile rank of 70 means the value beats 70% of the dataset, not that it equals 70% of anything.
- •Tip 2: For exam results like JEE Main, the all-India percentile is computed from the full candidate pool, so your local class rank will not match it.
- •Tip 3: Use the reverse mode for benchmarks, like finding the salary level that sits at the 90th percentile of your industry sample.
- ✗Mistake 1: Confusing percentile rank with percentage score, which leads people to misread a 70th percentile result as a 70% mark.
- ✗Mistake 2: Entering the dataset unsorted and assuming order matters, when the tool sorts internally and only the values themselves count.
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.
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