Number combinations,
generated with control.
Build complete result sets or reproducible samples from numbers, codes, names, and structured lists—without sending your data anywhere.
Generator
Configure input datasets and combinatorics parameters to build exact local outputs.
Need a workflow this tool does not cover?
Send a short note with your use case. Feature requests from real tasks are more valuable than adding random buttons.
One engine, several useful jobs.
Use the same exact-count engine across technical, educational, and operational tasks.
- 01
Test data matrices
Produce deterministic input combinations for coverage, boundary checks, and fixtures.
- 02
Codes and identifiers
Generate fixed-width values while preserving leading zeros and export formatting.
- 03
Classroom examples
Make combinations and permutations visible with exact totals and concrete rows.
- 04
Teams and selections
Build pairs, groups, or reproducible random samples from names and custom lists.
Common questions
What is a combination?
A selection where order does not matter. 1,2 and 2,1 are the same combination.
What is a permutation?
An arrangement where order matters. 1,2 and 2,1 are different permutations.
Does this predict lottery numbers?
No. It can make random selections, but no generator can improve the probability of a fair lottery draw.