Free tool
Combinations generator
Type a list of items and choose how many to take each time: you will see every possible combination (order doesn't matter) and how many there are in total.
Characters: 0 · Lines: 0
Characters: 0 · Lines: 0
Everything is processed in your browser. What you type is not sent to any server or stored.
How it works and what it does with your text
It's a small, straightforward utility: you paste, choose options and copy the result.
It runs in your browser
The text is transformed by this page's code, on your device. No sign-up or installation needed.
We don't store what you type
We don't send your text to any server or store it. You can check this in the Network tab of your browser's developer tools.
Free and unlimited
Use it as often as you like. It works the same on mobile and on desktop.
Tips to get the most out of it
In a combination, order doesn't matter
“a b” and “b a” are the same combination. If order matters to you (as in a password or a ranking), what you need is permutations.
How many there are: n choose k
Without repetition the total is n! / (k! · (n−k)!). With 5 items and k = 3 that's 10. With 49 items and k = 6, as in a lottery draw, almost 14 million.
With repetition
If an item can be repeated, the total is (n+k−1)! / (k! · (n−1)!). With 3 items and k = 2 that's 6 instead of 3.
Careful with big lists
The total grows very fast. The tool shows up to the limit you set and always calculates the exact total, even if it runs into the millions.
Frequently asked questions
What is a combination?
It is a group of k items taken from a list, regardless of order. From a, b, c, d the combinations of 2 are ab, ac, ad, bc, bd and cd (6 in total).
What is the difference between combinations and permutations?
In combinations order doesn't count (ab = ba). In permutations it does (ab and ba are different).
How do I calculate the number of combinations?
With the formula n! / (k! · (n−k)!). The tool does it for you, with very large numbers and without losing precision.
How many items does it support?
There is no limit on the number of items, but the result is trimmed to the maximum you set (up to 100,000 rows) so the browser doesn't freeze.
Related tools
Permutations generator
Arrange the items of a list in every possible way and count how many there are.
Combine word lists
Generate every possible combination between lists of words or phrases.
Random number generator
Generate random numbers in any range, with or without repeats and with decimals.
All free tools
Passwords, texts, lists, codes and more.
Do you manage lists, texts or keywords at scale?
We help with SEO strategy and with custom tools that save you hours of manual work. Tell us what you do today.