# milliseconds(_:) Construct a `Duration` given a number of milliseconds represented as a `BinaryInteger`. ``` static func milliseconds(_ milliseconds: T) -> Duration where T : BinaryInteger ``` ## Return Value A `Duration` representing a given number of milliseconds. ## Discussion ``` let d: Duration = .milliseconds(645) ``` --- 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)