Need random even numbers for a quiz, a board game, test data or a classroom activity? Set a range and a quantity, and the generator draws them fairly, with or without repeats.
Random even number generator
What the even number generator does
It picks numbers uniformly at random from the even integers between your minimum and maximum (both included). Uniform means every even number in the range has the same chance. If the range is 1 to 10, the possible picks are 2, 4, 6, 8 and 10, each with a 1-in-5 chance on every draw.
Randomness comes from your browser’s cryptographic random source (crypto.getRandomValues), with rejection sampling so no number is favoured. That is stronger than the classic Math.random() approach, though for lotteries or security you should still use a certified process.
How to generate random even numbers
- Enter a Minimum and Maximum. Negative values are fine.
- Choose How many numbers you want, from 1 to 10,000.
- Keep No repeats ticked for unique numbers, or untick it to allow duplicates.
- Choose an order (random, smallest first or largest first), then select Generate.
- Copy the numbers or download them as TXT (one per line) or CSV.
How the range limits the output
Between a and b there are roughly (b − a) ÷ 2 even numbers. With repeats turned off you cannot ask for more than that. For example, there are only 50 even numbers from 1 to 100, so requesting 60 unique ones shows a message instead of silently repeating values.
Example: 5 unique even numbers from −20 to 20
There are 21 even numbers in this range (−20, −18, …, 0, …, 18, 20).
One possible draw, sorted smallest first: −14, −2, 0, 8, 18. Each draw differs; that is the point.
Ideas for using random even numbers
- Create mental-math drills where every answer must halve cleanly.
- Generate test inputs for code that handles even and odd values differently.
- Pick seat or team numbers when groups must come in pairs.
Want every even number in order instead of a random sample? Use the Even Numbers List.
Frequently asked questions
Is zero included?
Yes, whenever 0 is inside your range, because zero is an even number.
Why can’t I generate more than 10,000 numbers?
The limit keeps the page fast and protects your device’s memory. Run the generator again for more.
Are the results truly random?
They are produced by the browser’s cryptographically secure generator, which is unpredictable for practical purposes. They are not suitable as a certified random source for gambling or legal draws.
What if my range contains no even numbers?
A range like 7 to 7 has no even numbers, so the tool asks you to widen it.