diff --git a/Sources/Units/Units.swift b/Sources/Units/Units.swift
index ecaddaf..c0fd3fc 100644
--- a/Sources/Units/Units.swift
+++ b/Sources/Units/Units.swift
@@ -1,6 +1,37 @@
-import CoreGraphics  // For CGFloat, often used in UI
 import Foundation
 
+#if canImport(CoreGraphics)
+	import CoreGraphics  // For CGFloat, often used in UI
+#else
+	public typealias CGFloat = Double
+	public struct CGPoint: Sendable {
+		public var x: CGFloat
+		public var y: CGFloat
+		public init(x: CGFloat, y: CGFloat) {
+			self.x = x
+			self.y = y
+		}
+	}
+
+	public struct CGSize: Sendable {
+		public var width: CGFloat
+		public var height: CGFloat
+		public init(width: CGFloat, height: CGFloat) {
+			self.width = width
+			self.height = height
+		}
+	}
+
+	public struct CGRect: Sendable {
+		public var origin: CGPoint
+		public var size: CGSize
+		public init(origin: CGPoint, size: CGSize) {
+			self.origin = origin
+			self.size = size
+		}
+	}
+#endif
+
 public protocol ConvertibleToDouble: Numeric {
 	var doubleValue: Double { get }
 }
@@ -19,9 +50,11 @@ extension Float: ConvertibleToDouble {
 extension Double: ConvertibleToDouble {
 	public var doubleValue: Double { self }
 }
-extension CGFloat: ConvertibleToDouble {
-	public var doubleValue: Double { Double(self) }
-}
+#if canImport(CoreGraphics)
+	extension CGFloat: ConvertibleToDouble {
+		public var doubleValue: Double { Double(self) }
+	}
+#endif
 
 // MARK: - 1. UnitCategory Enum
 public enum UnitCategory: String, CaseIterable, CustomStringConvertible,