Create app.py

app.py

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+import streamlit as st
+
+# Function to convert all units to square meters
+def convert_to_sqm(length, width, unit):
+    if unit == "Meters (m)":
+        return length * width
+    elif unit == "Centimeters (cm)":
+        return (length / 100) * (width / 100)
+    elif unit == "Millimeters (mm)":
+        return (length / 1000) * (width / 1000)
+
+# Streamlit UI
+st.set_page_config(page_title="Area & Gypsum Board Calculator", layout="wide")
+
+st.title("📐 Area & Gypsum Board Calculator")
+st.markdown("Calculate the total area with unit conversion and estimate gypsum board requirements.")
+
+# Input for main area calculation
+st.subheader("Main Area Input")
+unit = st.selectbox("Select the unit of measurement:", ["Meters (m)", "Centimeters (cm)", "Millimeters (mm)"])
+
+length = st.number_input("Enter Length:", min_value=0.0, format="%.2f")
+width = st.number_input("Enter Width:", min_value=0.0, format="%.2f")
+
+# Calculate area
+total_area = convert_to_sqm(length, width, unit)
+
+# Option to subtract an excluded area
+st.subheader("Excluded Area (Optional)")
+exclude_length = st.number_input("Enter Length of Excluded Area:", min_value=0.0, format="%.2f", key="ex_len")
+exclude_width = st.number_input("Enter Width of Excluded Area:", min_value=0.0, format="%.2f", key="ex_wid")
+
+excluded_area = convert_to_sqm(exclude_length, exclude_width, unit)
+final_area = total_area - excluded_area
+
+st.markdown(f"### ✅ Total Area: `{final_area:.2f} m²`")
+
+# Gypsum board calculation
+st.subheader("Gypsum Board Calculation")
+gypsum_board_area = st.number_input("Enter Area of a Single Gypsum Board (m²):", min_value=0.1, format="%.2f")
+
+if st.button("Calculate Required Gypsum Boards"):
+    if gypsum_board_area > 0:
+        num_boards = final_area / gypsum_board_area
+        st.success(f"📌 You will need approximately `{num_boards:.2f}` gypsum boards.")
+    else:
+        st.error("Please enter a valid gypsum board area.")
+
+# Footer
+st.markdown("---")
+st.markdown("Developed with ❤️ using Streamlit.")
+