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No 06 - IMPACT

Environmental transparency

Useful and verified figures

How we
calculate impact

Our impact numbers are based on recognized public sources. The goal is simple: show the concrete effect of anti-waste actions without inflating results.

ADEMEWATER FOOTPRINTTRANSPARENCY

Contents

Contents

Section · Chapter 1

Why display this impact?

Anti-waste has a direct effect on climate and resources. When a product is saved, part of the CO2 emissions and water used to produce it are avoided.

We publish this method for transparency: the factors come from public scientific references, not from marketing claims.

— End of section 01 —Back to contents

Section · Chapter 2

How figures are calculated

Saved CO2

Saved CO2 = product weight (kg) x category CO2 factor (g CO2e/kg).

Example factors (Agribalyse 3.2, France, kg consumed product): beef about 28,000 g/kg, chicken about 4,560 g/kg, baguette bread about 777 g/kg, carrot about 364 g/kg.

Source: ADEME Agribalyse 3.2 via impactco2.fr (basecarbone.ademe.fr)

Saved water

Saved water = weight (kg) x category water footprint.

Source: Water Footprint Network

Reliability rules

  • CO2 scope: Agribalyse 3.2 (ADEME, updated 15/01/2025), France, per kg of consumed product (farm to plate). Each factor can be checked on impactco2.fr.
  • The considered weight is capped at 10 kg per offer to prevent outlier entries.
  • If impact cannot be calculated, we show "-". No number is invented.
  • The same method and factors are used in the mobile app and in the professional space.

Concrete examples

Step-by-step calculations based on real cases.

Bread - 800 g

Category: bread (traditional baguette)

Factor: 777 g CO2e/kg

0.8 kg x 777 = 622 g CO2 saved

622 g CO2 saved

  • Car: 622 / 142 = 4.4 km
  • Meals: 0.8 / 0.5 = 1.6, rounded to 2 meals
  • Tree: 0.622 / 25 = 0.025 tree/year, i.e. about 2.5% of one tree (about 40 breads for 1 tree/year)

Chicken - 400 g

Category: chicken

Factor: 4,560 g CO2e/kg

0.4 kg x 4,560 = 1,824 g CO2 saved

1.8 kg CO2 saved

  • Car: 1,824 / 142 = 13 km

Carrots - 500 g

Category: carrot (Agribalyse reference)

Factor: 364 g CO2e/kg

0.5 kg x 364 = 182 g CO2 saved

182 g CO2 saved

  • Car: 182 / 142 = 1.3 km

Beef - 350 g

Category: beef (high impact)

Factor: 28,000 g CO2e/kg

0.35 kg x 28,000 = 9,800 g CO2 saved

9.8 kg CO2 saved

  • Car: 9,800 / 142 = 69 km
— End of section 02 —Back to contents

Section · Chapter 3

Public sources used

These references are public and freely accessible:

— End of section 03 —Back to contents

Section · Chapter 4

Everyday equivalents (v1 - June 2026)

To make magnitudes easier to understand:

Car

142 g CO2e/km (ADEME impactco2, 2025 modeling).

Tree

25 kg CO2/year (scientific consensus).

Shower

60 L for a quick shower of about 3 minutes (ADEME).

Meal

0.5 kg for a complete meal (ADEME order of magnitude, 400-600 g).

5 kWh/kg (CECAM project ADEME/IDDRI).

1,500 L/kg (Hoekstra 2010 / Water Footprint Network, global statistic).

— End of section 04 —Back to contents

Section · Chapter 5

Our consistency commitment

The rule is the same for everyone: the same product, weight and category produce the same result, whichever screen you use.

This consistency makes impact comparable over time and helps track measurable progress.

Question about the method? We can answer with the public references we use.

Contact us
— End of section 05 —Back to contents