ℹ️ How to use the AI Unit Converter

1. Select a category (e.g., Length, Pressure, pH, Gas Law).

2. Enter the value you want to convert.

3. Choose the starting unit and the target unit.

4. Click Convert to see the result.

5. The app will also show an AI explanation of the calculation in simple English.

6. For Gas Law (PV = nRT), choose the unknown (P, V, n, or T), fill the other fields, and click "Calculate".

✅ The tool supports physics & chemistry units, scientific notation, and step-by-step AI reasoning.