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Combination calculator
Calculate nCr combinations without considering order. Use it in your browser, with no account required.
No account needed
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How to use
- 1Enter your values and choose the options.
- 2Run the tool and review the result.
- 3Copy the result or save it as a file.
Good to know
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Worked input and output example
These results come from this tool’s actual engine using the sample values below, not your personal input or saved work. Load the example in the tool to inspect the same inputs.
Example input
| Field | Value |
|---|---|
| Integer n | 10 |
| Integer r | 3 |
Example result
120
Input constraints
These are the actual input validation limits; they are not a guarantee that every accepted value is realistic or that a model applies to your situation.
- Integer n: Accepted range: 0 ≤ x ≤ 1,000 · Whole numbers only
- Integer r: Accepted range: 0 ≤ x ≤ 1,000 · Whole numbers only