diff --git a/src/main/java/com/thealgorithms/conversions/AdvancedConversions.java b/src/main/java/com/thealgorithms/conversions/AdvancedConversions.java
new file mode 100644
index 000000000000..35029e042b78
--- /dev/null
+++ b/src/main/java/com/thealgorithms/conversions/AdvancedConversions.java
@@ -0,0 +1,213 @@
+import java.util.Scanner;
+
+// --- Base Interface for Conversions ---
+interface Convertible {
+    void convert(Scanner scanner);
+}
+
+// --- Length Conversion Class ---
+class LengthConverter implements Convertible {
+    public void convert(Scanner scanner) {
+        System.out.println("--- LENGTH CONVERSION ---");
+        System.out.println("1. Centimeters to Meters");
+        System.out.println("2. Meters to Centimeters");
+        System.out.println("3. Meters to Feet");
+        System.out.println("4. Feet to Meters");
+        System.out.print("Choose conversion: ");
+        int choice = scanner.nextInt();
+
+        System.out.print("Enter value: ");
+        double value = scanner.nextDouble();
+        double result;
+
+        switch (choice) {
+            case 1:
+                result = value / 100;
+                System.out.println(value + " cm = " + result + " m");
+                break;
+            case 2:
+                result = value * 100;
+                System.out.println(value + " m = " + result + " cm");
+                break;
+            case 3:
+                result = value * 3.28084;
+                System.out.println(value + " m = " + result + " ft");
+                break;
+            case 4:
+                result = value / 3.28084;
+                System.out.println(value + " ft = " + result + " m");
+                break;
+            default:
+                System.out.println("Invalid choice!");
+        }
+    }
+}
+
+// --- Weight Conversion Class ---
+class WeightConverter implements Convertible {
+    public void convert(Scanner scanner) {
+        System.out.println("--- WEIGHT CONVERSION ---");
+        System.out.println("1. Grams to Kilograms");
+        System.out.println("2. Kilograms to Grams");
+        System.out.println("3. Kilograms to Pounds");
+        System.out.println("4. Pounds to Kilograms");
+        System.out.print("Choose conversion: ");
+        int choice = scanner.nextInt();
+
+        System.out.print("Enter value: ");
+        double value = scanner.nextDouble();
+        double result;
+
+        switch (choice) {
+            case 1:
+                result = value / 1000;
+                System.out.println(value + " g = " + result + " kg");
+                break;
+            case 2:
+                result = value * 1000;
+                System.out.println(value + " kg = " + result + " g");
+                break;
+            case 3:
+                result = value * 2.20462;
+                System.out.println(value + " kg = " + result + " lb");
+                break;
+            case 4:
+                result = value / 2.20462;
+                System.out.println(value + " lb = " + result + " kg");
+                break;
+            default:
+                System.out.println("Invalid choice!");
+        }
+    }
+}
+
+// --- Temperature Conversion Class ---
+class TemperatureConverter implements Convertible {
+    public void convert(Scanner scanner) {
+        System.out.println("--- TEMPERATURE CONVERSION ---");
+        System.out.println("1. Celsius to Fahrenheit");
+        System.out.println("2. Fahrenheit to Celsius");
+        System.out.println("3. Celsius to Kelvin");
+        System.out.println("4. Kelvin to Celsius");
+        System.out.print("Choose conversion: ");
+        int choice = scanner.nextInt();
+
+        System.out.print("Enter temperature: ");
+        double value = scanner.nextDouble();
+        double result;
+
+        switch (choice) {
+            case 1:
+                result = (value * 9 / 5) + 32;
+                System.out.println(value + " °C = " + result + " °F");
+                break;
+            case 2:
+                result = (value - 32) * 5 / 9;
+                System.out.println(value + " °F = " + result + " °C");
+                break;
+            case 3:
+                result = value + 273.15;
+                System.out.println(value + " °C = " + result + " K");
+                break;
+            case 4:
+                result = value - 273.15;
+                System.out.println(value + " K = " + result + " °C");
+                break;
+            default:
+                System.out.println("Invalid choice!");
+        }
+    }
+}
+
+// --- Currency Conversion Class ---
+class CurrencyConverter implements Convertible {
+    public void convert(Scanner scanner) {
+        System.out.println("--- CURRENCY CONVERSION ---");
+        System.out.println("1. USD to GBP");
+        System.out.println("2. GBP to USD");
+        System.out.println("3. USD to JPY");
+        System.out.println("4. JPY to USD");
+        System.out.print("Choose conversion: ");
+        int choice = scanner.nextInt();
+
+        System.out.print("Enter amount: ");
+        double value = scanner.nextDouble();
+        double result;
+
+        // Example static rates
+        double usdToGbp = 0.78;
+        double gbpToUsd = 1.28;
+        double usdToJpy = 150.35;
+        double jpyToUsd = 1 / 150.35;
+
+        switch (choice) {
+            case 1:
+                result = value * usdToGbp;
+                System.out.println(value + " USD = " + result + " GBP");
+                break;
+            case 2:
+                result = value * gbpToUsd;
+                System.out.println(value + " GBP = " + result + " USD");
+                break;
+            case 3:
+                result = value * usdToJpy;
+                System.out.println(value + " USD = " + result + " JPY");
+                break;
+            case 4:
+                result = value * jpyToUsd;
+                System.out.println(value + " JPY = " + result + " USD");
+                break;
+            default:
+                System.out.println("Invalid choice!");
+        }
+    }
+}
+
+// --- Main Program ---
+public class AdvancedConversions {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        Convertible converter;
+        int choice;
+
+        do {
+            System.out.println("===== ADVANCED CONVERSIONS =====");
+            System.out.println("1. Length Converter");
+            System.out.println("2. Weight Converter");
+            System.out.println("3. Temperature Converter");
+            System.out.println("4. Currency Converter");
+            System.out.println("0. Exit");
+            System.out.print("Choose converter: ");
+            choice = scanner.nextInt();
+
+            switch (choice) {
+                case 1:
+                    converter = new LengthConverter();
+                    converter.convert(scanner);
+                    break;
+                case 2:
+                    converter = new WeightConverter();
+                    converter.convert(scanner);
+                    break;
+                case 3:
+                    converter = new TemperatureConverter();
+                    converter.convert(scanner);
+                    break;
+                case 4:
+                    converter = new CurrencyConverter();
+                    converter.convert(scanner);
+                    break;
+                case 0:
+                    System.out.println("Thank you for using the converter. Goodbye!");
+                    break;
+                default:
+                    System.out.println("Invalid option!");
+            }
+
+            System.out.println();
+
+        } while (choice != 0);
+
+        scanner.close();
+    }
+}