Comparison tool
Calculate a unit price
Return two formats or lots to the same unit. Enter the total price paid, the quantity of each container and their number. The data remain in your browser during this visit.
Compare two packs
For three packages of 250 g, indicate quantity 250, unit grams and number 3. Use the full lot price. For a single container, leave the number to 1.
What the ratio compares
Educational example: 6 € for 750 g give 8 €/kg. Three packages of 250 g for 5,40 € give 7,20 €/kg. The second batch costs 0,80 € less per kilo; this does not prove equivalent quality.
Do not compare masses with volumes without product-specific conversion information. For a concentrated product, also look at the dose and number of uses. One price per litre does not describe the cost of washing.
Fictional example: when 80% is consumed, a €5.40 pack containing 750 g costs €9 per usable kg. A €6 pack containing 750 g that is fully consumed stays at €8 per usable kg. The cheaper pack to buy can therefore cost more per quantity actually used.
Distinguish an immediate discount from a future loyalty benefit. Basket fees, substitutions, storage and unused quantities may change the interest of the offer.
Detailed method: lots and unit prices · Compare the delivered basket · Races and feeding