What this tool does
Compare A and B on the same quantity basis, or calculate one product. Enter the total quantity in each bundle, not the size of one item.
How to use it
- Choose one product or A/B comparison, then count, mass or volume.
- Enter each bundle price, total quantity and unit. Add discount and delivery if needed.
- Compare the delivered unit prices, difference and percentage reduction.
Formula and method
Payable = price × (1 − discount % ÷ 100) + delivery. Unit price = payable ÷ total quantity in items, kg or L. Reduction % = unit-price difference ÷ higher unit price × 100.
Example
A costs 6 for 500 g; B costs 10 for 1 kg, without discounts or delivery. A is 12/kg and B is 10/kg. B is about 16.67% cheaper per kilogram.
Useful for
- Comparing multipacks
- Checking sale prices
- Including delivery in a per-item comparison
Limits and notes
Use one currency. Taxes, deposits, memberships and complex promotions are not inferred. Compare equivalent products; a lower unit price does not mean a lower checkout total. Mass and volume are not interchangeable.
Frequently asked questions
Can I compare package sizes?
Yes. Choose the same dimension and enter each bundle’s total quantity. For six 500 mL bottles, enter 3000 mL or 3 L.
What happens when I change the unit?
The number is not converted automatically. Check the total quantity after changing the unit.