Interact with and calculate values of currencies in a type-safe way.

Swift Currency

MIT License Swift 5+

Package Tests codecov

Documentation Maintainability


Swift Currency provides type-safe representations of ISO 4217 currencies in Swift.

It provides many conveniences for working with currencies, such as literal representations, string interpolation, and mathematics.

import Currency
import Foundation

let dollars = USD(30.01)
// 30.01 USD
print(dollars * 2)
// 60.02 USD
print(dollars.distributedEvenly(intoParts: 6))
// [USD(1.68), USD(1.68), USD(1.68), USD(1.67), USD(1.67), USD(1.67)]

let pounds = GBP(109.23)
print(dollars + pounds)
// compile error

let jpy: JPY = 399
print("The total price is \(jpy.localizedString()).")
// "The total price is ¥399.", assuming `Foundation.Locale.current` is "en_US"

let euro = EUR(29.09)
print("Der Gesamtpreis beträgt \(localize: euro, for: .init(identifier: "de_DE")).")
// "Der Gesamtpreis beträgt 29,09 €."

For more detailed examples, see the usage guide.

Language and Platform Test Matrix

The following table shows the combination of Swift language versions and operating systems that receive regular unit testing.

Platform Swift 5 5.1 5.2 Trunk
macOS Latest
Ubuntu 18.04 (Bionic)
Ubuntu 16.04 (Xenial)


Add the package reference to your Package.swift to install via SwiftPM.

dependencies: [
    .package(url: "", from: "0.6.0")


Documentation is available from the Swift Package Index.


For bugs or feature requests, file a new issue.


SemVer changes are documented for each release on the releases page.


Check out for more information on how to help with SwiftCurrency.


Check out CONTRIBUTORS.txt to see the full list. This list is updated for each release.



Copyright (c) 2020-present, Peek Travel Inc.

This project contains code written by others not affliated with this project. All copyright claims are reserved by them. For a full list, with their claimed rights, see NOTICE.txt

Swift is a registered trademark of Apple, Inc. Any use of their trademark does not imply any affiliation with or endorsement by them, and all rights are reserved by them.


  • Swift Tools 5.6.0
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Last updated: Tue Nov 08 2022 09:16:10 GMT-0500 (GMT-05:00)