The tool operates on a simple principle for core conversions and integrates specific logic for its specialized modes:

1. Core Weight Conversion:

   • Input: Enter the weight value you want to convert and select its current unit (e.g., kg, g, lb, oz, metric ton, quintal).

   • Output: Select the desired unit for conversion.

   • Logic: All conversions are internally routed through a base unit, the gram (g), ensuring accuracy across various units.

2. Grocery Mode:

   • Input: Instead of manually typing a number, you can select a common grocery item from a dropdown list (e.g., “1 Apple”, “1 kg Rice Bag”). This selection will automatically populate the weight input field with a typical, realistic weight for that item.

   • Conversion: You can then convert this pre-filled weight into any other desired unit (e.g., convert “1 Apple” (approx. 150g) to ounces).

   • Units: This mode primarily uses Kilogram (kg), Gram (g), Pound (lb), and Ounce (oz), which are common in retail grocery.

3. Parcel Shipping Estimator:

   • Concept: Shipping companies often charge based on chargeable weight, which is the higher of the package’s actual weight or its volumetric weight. Volumetric weight accounts for the space a package occupies.

   • Inputs:

     • Parcel Dimensions: Enter the Length, Width, and Height of your parcel, typically in centimeters (cm).

     • Actual Weight: Enter the physical weight of your parcel, typically in kilograms (kg).

     • Dimensional Factor: Input the dimensional factor used by your shipping carrier. Common factors are 5000 or 6000 for international air freight, but it can vary. The tool will provide a common default value, which you can adjust.

   • Calculations:

     • The tool first calculates the Volumetric Weight using the provided dimensions and dimensional factor.

     • It then compares the calculated Volumetric Weight with the Actual Weight.

     • The Chargeable Weight is determined as the higher of these two values.

   • Output: The tool displays the calculated Volumetric Weight and the final Chargeable Weight, providing crucial information relevant to shipping costs without needing actual carrier pricing.