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Shrinkflation Calculator

Compare the unit price of products. Detect hidden price increases. Helps with saving money and comparing options in daily life.

Updated 2026 Data stays local

Old product

New product

Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.

Frequently Asked Questions

What is shrinkflation?

Shrinkflation is when manufacturers reduce the product quantity while keeping the price the same or similar. It is a hidden price increase. Always check the unit price (per kg or liter) for accurate comparison.

How can I detect hidden price increases?

Always compare the unit price (price per kg or liter), which must be displayed in stores. Watch for packaging redesigns, which often accompany quantity reductions. Consumer organizations publish regular reports on offenders.

What is the Shrinkflation Calculator?

The shrinkflation calculator compares the unit price (per kg, litre) of different pack sizes to detect hidden price increases.

How does the Shrinkflation Calculator work?

Enter the price and quantity of two packs. The calculator computes the unit price (price / quantity) and shows the percentage difference. This reveals whether a smaller pack is a hidden price increase.

Key Data and Facts

Unit price disclosure is mandatory in Germany: euros per kg or litre (PAngV). Shrinkflation: same price with less content. Unit price comparison reveals the true cost.

Step-by-Step Guide

So entlarven Sie Mogelpackungen step by step: 1. Produkt A enter: Preis und Menge (z. B. 2,49 EUR fuer 400 g Chips). 2. Produkt B enter: Preis und Menge (z. B. 2,49 EUR fuer 350 g Chips -- gleicher Preis, weniger Inhalt). 3. Grundpreise compare: Produkt A: 2,49 / 0,4 = 6,23 EUR/kg. Produkt B: 2,49 / 0,35 = 7,11 EUR/kg. Die versteckte Preiserhoehung betraegt 14,3 %. 4. Grundpreispflicht: Nach der Preisangabenverordnung (PAngV) muessen Haendler den Grundpreis (EUR/kg oder EUR/l) angeben. 5. Typische Mogelpackungs-Tricks: Weniger Inhalt bei gleichem Preis, groessere Verpackung mit mehr Luft, neue Rezeptur als Vorwand fuer Preiserhoehung, kleinere Portionsgroessen. 6. Haeufig betroffene Produkte: Suessigkeiten, Waschmittel, Kosmetik, Tiefkuehlprodukte. Tipp: Immer den Grundpreis auf dem Preisschild compare, nicht den Stueckpreis.

Calculation Example

Alte Packung: 500 g fuer 3,29 EUR (6,58 EUR/kg). Neue Packung: 450 g fuer 3,29 EUR (7,31 EUR/kg). Versteckte Preiserhoehung: 11,1 %.

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