Random Number Generator
Generate random integers within a range directly in your browser.
Generated results
How random number generation works
Generate the requested number of integers between the minimum and maximum values. Use quick setups for common ranges, or set exclusions, duplicate-free generation, and result sorting together.
How the available pool is determined
The inclusive minimum and maximum define the initial integer pool. Exclusions remove values from it, and no-duplicate mode removes each selected value before the next draw. The requested quantity must fit in the remaining pool.
Random does not mean predictive
Generation uses the browser Web Crypto API, which is suitable for general random selection. A generated set does not predict a lottery, prove a certified public draw, or guarantee a particular distribution in a small sample.
Frequently Asked Questions
Are the numbers sent to a server?
No. Generation uses the Web Crypto API in your browser, and neither your inputs nor results are sent to Utilook.
What does without duplicates mean?
It prevents the same number from appearing more than once in the generated list. The requested quantity cannot exceed the number of available values in the range.
How do excluded numbers work?
Enter numbers you do not want to draw, separated by commas or spaces. Each excluded value must be an integer inside the current minimum and maximum range.
What does the Lotto 6/45 quick setup do?
It generates six unique values from 1 through 45 and sorts them in ascending order. It does not predict or guarantee an official draw result.
What range can I generate?
The minimum and maximum can be any safe integer from -1,000,000,000 to 1,000,000,000.