ClarityHow to use this tool
- Enter package price, quantity in the package.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Package price | Numeric value. Zero or positive. | 12 |
| Quantity in the package | Numeric value. Must be greater than zero. | 3 |
Result for these sample inputs
4 currency units
- Basis
- Cost per one unit of the entered quantity
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Unit price = package price ÷ quantity. Repeat with another package after converting its quantity into the same unit.
A 3 kg package priced at 12 costs 4 per kg. A 500 g package must first be expressed as 0.5 kg for a per-kg comparison.
What to keep in mind
Quantity must be positive. The result does not compare product quality, waste, shipping or promotions unless those costs are included.
Common questions
Can I compare different package sizes?
Yes, provided the quantity uses the same unit for both calculations.
Does a lower unit price always save money?
Not if the larger package causes waste or adds costs not included in the price.
Methodology maintained by ClarityKit. How these tools are built and checked.