ToolGrid AICombinations and Permutations
Count combinations (nCr) and permutations (nPr).
Runs entirely in your browser — your selected files are not uploaded by this tool. Device-provided speech voices may use online services.
About this free combinations and permutations tool
Count combinations (nCr) and permutations (nPr). Calculators answer a defined arithmetic question using the values you supply. Keep units and currencies consistent, choose the correct starting amount and inspect the assumptions before using a result. Estimates do not replace a lender quotation, an official tax rate, a medical assessment or a jurisdiction-specific deadline rule.
A practical example
A concrete example uses n (items): 5; r (chosen): 2. The result is Combinations: 10 Permutations: 20.
Before you rely on the result
Results use floating-point arithmetic and are rounded to six decimal places. Confirm units and required precision before relying on the result.
Frequently asked questions
Is the combinations and permutations free to use?
Yes. The Combinations and Permutations is free, needs no account and has no usage limit beyond what your device can handle.
Are my files or numbers uploaded anywhere?
No. The Combinations and Permutations runs in your browser, so the values and files you enter stay on your device. Close the tab and nothing is kept.
What does the combinations and permutations do?
Count combinations (nCr) and permutations (nPr). Calculators answer a defined arithmetic question using the values you supply. Keep units and currencies consistent, choose the correct starting amount and inspect the assumptions before using a result. Estimates do not replace a lender quotation, an official tax rate, a medical assessment or a jurisdiction-specific deadline rule.
When should I double-check the result?
Results use floating-point arithmetic and are rounded to six decimal places. Confirm units and required precision before relying on the result.
Can I share my result?
Yes. Use Copy result or Download, and on calculator-style tools use Copy share link to send someone a link that opens with the same inputs filled in.