Combination Generator
Generate all possible combinations from a list of items. Choose how many items per combination. Copy results instantly.
About This Free Online Combination Generator
Our free online combination generator creates all possible combinations from your list of items. Enter each item on a new line, choose how many items per combination (r), and instantly see every possible grouping. The tool uses the standard n-choose-r combinatorial algorithm and supports up to 20 items. Perfect for team building, menu planning, study groups, lottery number generation, and combinatorial analysis.
Features of Our Combination Generator
- Generate all combinations from any list of items
- Customizable combination size (how many items per group)
- Handles up to 20 items
- Total combinations count displayed
- Copy all combinations to clipboard
- 100% free and private — browser-only processing
How to Use the Combination Generator
Using this tool is simple and requires no signup or registration. Follow these steps:
- Enter each item on a new line in the input area (e.g., "Apple", "Banana", "Cherry").
- Set the combination size — how many items per group.
- Click Generate to see all possible combinations.
- Click Copy to copy the list of combinations to your clipboard.
Frequently Asked Questions About Combination Generator
What is a combination?
A combination is a selection of items from a set where order does not matter. For example, choosing 2 letters from {A, B, C} gives combinations: AB, AC, BC. AB and BA are considered the same combination because order does not matter.
How many combinations will I get?
The number of combinations is calculated using the formula n! / (r! × (n-r)!), where n is the total number of items and r is the combination size. For 5 items taken 3 at a time, you get 10 combinations.
Can I combine more than 20 items?
The limit is 20 items to prevent extremely large result sets. With 20 items taken 10 at a time, there are 184,756 combinations — which can impact browser performance beyond this limit.
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.