diff --git a/.vscode/launch.json b/.vscode/launch.json
index 4342f4c90..3241336a7 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -4,6 +4,13 @@
   // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
   "version": "0.2.0",
   "configurations": [
+    {
+      "name": "Attach to Chrome",
+      "port": 9222,
+      "request": "attach",
+      "type": "chrome",
+      "webRoot": "${workspaceFolder}"
+    },
     {
       "name": "ET: Debug Python (unittest)",
       "type": "debugpy",
diff --git a/solutions/challenge_23/__init__.py b/solutions/challenge_23/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/solutions/challenge_23/celsius_to_fahrenheit.py b/solutions/challenge_23/celsius_to_fahrenheit.py
new file mode 100644
index 000000000..2a674afc0
--- /dev/null
+++ b/solutions/challenge_23/celsius_to_fahrenheit.py
@@ -0,0 +1,61 @@
+"""conversion of temperature from celsius to fahrenheit."""
+
+
+def celsius_to_fahrenheit(celsius_list):
+    """
+    Convert a list of temperatures from Celsius to Fahrenheit.
+
+    Args:
+        celsius_list (list): List of temperatures in Celsius.
+
+    Returns:
+        list: List of temperatures converted to Fahrenheit.
+
+    Raises:
+        ValueError: If input is not a list or contains invalid elements.
+
+    >>> celsius_to_fahrenheit([0, 100])
+    [32.0, 212.0]
+
+    >>> celsius_to_fahrenheit([-40, -10])
+    [-40.0, 14.0]
+
+    >>> celsius_to_fahrenheit([25.5, 0.5])
+    [77.9, 32.9]
+    """
+
+    if not isinstance(celsius_list, list):
+        raise ValueError("Input must be a list.")
+
+    fahrenheit_list = []
+
+    for temp in celsius_list:
+        if not isinstance(temp, (int, float)):
+            raise ValueError("List elements must be integers or floats.")
+
+        fahrenheit = (9 / 5) * temp + 32
+        fahrenheit_list.append(round(fahrenheit, 2))
+
+    return fahrenheit_list
+
+
+if __name__ == "__main__":
+    user_input = input("Enter the temperature in celsius: ")
+
+    input_celsius_list = []
+    if not user_input.strip():
+        print("Error: No input provided.")
+    else:
+        try:
+            input_celsius_list = [float(temp.strip()) for temp in user_input.split(",")]
+        except ValueError:
+            print(
+                "Error: Invalid input. Please enter a list of numbers separated by commas."
+            )
+            input_celsius_list = []
+
+    try:
+        result = celsius_to_fahrenheit(input_celsius_list)
+        print("The list of temperature in fahrenheit is:", result)
+    except ValueError as e:
+        print("Error:", e)
diff --git a/solutions/tests/challenge_23/test_celsius_to_fahrenheit.py b/solutions/tests/challenge_23/test_celsius_to_fahrenheit.py
new file mode 100644
index 000000000..8097eb518
--- /dev/null
+++ b/solutions/tests/challenge_23/test_celsius_to_fahrenheit.py
@@ -0,0 +1,36 @@
+"""Test the celsius_to_fahrenheit function from the challenge_23 module."""
+
+import unittest
+from solutions.challenge_23.celsius_to_fahrenheit import celsius_to_fahrenheit
+
+
+class TestCelsiusToFahrenheit(unittest.TestCase):
+    """This tests module provide test for the celsius_to_fahrenheit function.
+    It tests the function with different inputs and checks if the output is as expected."""
+
+    def test__with_positive_temperatures(self):
+        """Test the program with positive temperature list."""
+        self.assertEqual(celsius_to_fahrenheit([0, 100]), [32.0, 212.0])
+
+    def test_with_negative_temperatures(self):
+        """Test the program with negative temperatures list."""
+        self.assertEqual(celsius_to_fahrenheit([-40, -10]), [-40.0, 14.0])
+
+    def test_with_mixed_temperatures(self):
+        """Test the program with mixed temperatures list"""
+        self.assertEqual(celsius_to_fahrenheit([-10, 0, 25]), [14.0, 32.0, 77.0])
+
+    def test_float_temperatures(self):
+        """Test the program with  float temperatures."""
+        result = celsius_to_fahrenheit([0.5, -0.5])
+        self.assertAlmostEqual(result[0], 32.9, places=1)
+
+    def test_invalid_input_non_list(self):
+        """Test invalid input that is not a list."""
+        with self.assertRaises(ValueError):
+            celsius_to_fahrenheit("not a list")
+
+    def test_invalid_input_non_numeric_elements(self):
+        """Test the program with invalid input that contains non-numeric elements."""
+        with self.assertRaises(ValueError):
+            celsius_to_fahrenheit([30, "a string", 45])