To Feet and Inches

Sources/Units/Units.swift

@@ -558,3 +558,34 @@ extension UnitValue where ValueType: ConvertibleToDouble {  // Apply constraints
 	public var mph: UnitValue<Double>? { converted(to: .milesPerHour) }
 	public var kn: UnitValue<Double>? { converted(to: .knots) }
 }
+
+// MARK: - Height Conversion Extensions
+extension UnitValue where ValueType: ConvertibleToDouble {
+	/// Converts a length UnitValue (e.g., in cm) to feet and inches.
+	/// Returns nil if the category is not length.
+	public func toFeetAndInches(maximumFractionDigits: Int = 2) -> String? {
+		guard unit.category == .length else { return nil }
+		guard let totalInches = converted(to: .inch)?.value else { return nil }
+		let feet = Int(totalInches / 12)
+		let inches = totalInches.truncatingRemainder(dividingBy: 12)
+		let formatter = NumberFormatter()
+		formatter.maximumFractionDigits = maximumFractionDigits
+		formatter.minimumFractionDigits = 0
+		formatter.numberStyle = .decimal
+		guard
+			let formattedInches = formatter.string(
+				from: NSNumber(value: inches))
+		else { return nil }
+		return "\(feet) ft \(formattedInches) in"
+	}
+
+	/// Creates a UnitValue in a target unit (e.g., cm) from feet and inches.
+	public static func from(feet: Int, inches: Double, to targetUnit: Unit)
+		-> UnitValue<Double>?
+	{
+		guard targetUnit.category == .length else { return nil }
+		let totalInches = Double(feet) * 12 + inches
+		let inchesValue = totalInches.in
+		return inchesValue.converted(to: targetUnit)
+	}
+}