# random(in:) Returns a random value within the specified range. ``` static func random(in range: Range) -> Self ``` ## Parameters `range` The range in which to create a random value. `range` must be finite and non-empty. ## Return Value A random value within the bounds of `range`. ## Discussion Use this method to generate a floating-point value within a specific range. This example creates three new values in the range `10.0 ..< 20.0`. ``` for _ in 1...3 { print(Double.random(in: 10.0 ..< 20.0)) } // Prints "18.1900709259179" // Prints "14.2286325689993" // Prints "13.1485686260762" ``` The `random()` static method chooses a random value from a continuous uniform distribution in `range`, and then converts that value to the nearest representable value in this type. Depending on the size and span of `range`, some concrete values may be represented more frequently than others. This method is equivalent to calling `random(in:using:)`, passing in the system’s default random generator. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)