diff --git a/main.py b/main.py
new file mode 100644
index 0000000..0db9c78
--- /dev/null
+++ b/main.py
@@ -0,0 +1,87 @@
+# weight temperature height
+import questionary
+
+
+def is_float(s):
+    """
+    Checks if a given string can be successfully converted to a float.
+
+    Args:
+        s: The string to check.
+
+    Returns:
+        True if the string is a valid float, False otherwise.
+    """
+    try:
+        float(s)
+        return True
+    except ValueError:
+        return False
+
+
+def weight():
+    way = questionary.select("Which way?", ["kg to lb", "lb to kg", "Back"]).ask()
+    if way == "kg to lb":
+        weight = questionary.text(
+            "Enter the kg weight:",
+            validate=lambda text: True if is_float(text) else False,
+        ).ask()
+        print("Your converted weight is:", round(float(weight) * 2.2, 2))
+    elif way == "lb to kg":
+        weight = questionary.text(
+            "Enter the lb weight:",
+            validate=lambda text: True if is_float(text) else False,
+        ).ask()
+        print("Your converted weight is:", round(float(weight) / 2.2, 2))
+
+
+def temperature():
+    way = questionary.select("Which way?", ["C to F", "F to C", "Back"]).ask()
+    if way == "C to F":
+        temp = questionary.text(
+            "Enter the C temperature:",
+            validate=lambda text: True if is_float(text) else False,
+        ).ask()
+        print("Your converted temperature is:", round((float(temp) * 1.8) + 32, 2))
+    elif way == "F to C":
+        temp = questionary.text(
+            "Enter the F temperature:",
+            validate=lambda text: True if is_float(text) else False,
+        ).ask()
+        print("Your converted temperature is:", round((float(temp) - 32) * 5 / 9, 2))
+
+
+def height():
+    way = questionary.select("Which way?", ["in to cm", "cm to in", "Back"]).ask()
+    if way == "in to cm":
+        height = questionary.text(
+            "Enter the in height:",
+            validate=lambda text: True if is_float(text) else False,
+        ).ask()
+        print("Your converted height is:", round(float(height) * 2.54, 2))
+    elif way == "cm to in":
+        height = questionary.text(
+            "Enter the cm height:",
+            validate=lambda text: True if is_float(text) else False,
+        ).ask()
+        print("Your converted height is:", round(float(height) / 2.54, 2))
+
+
+def main():
+    while True:
+        choice = questionary.select(
+            "Which type of unit do you want to convert?",
+            ["Weight", "Temperature", "Height", "Exit"],
+        ).ask()
+        if choice == "Exit":
+            break
+        if choice == "Weight":
+            weight()
+        elif choice == "Temperature":
+            temperature()
+        elif choice == "Height":
+            height()
+
+
+if __name__ == "__main__":
+    main()