Eco Label Calculator Formula

Understand the math behind the eco label calculator. Each variable explained with a worked example.

Use the Eco Label Calculator

Formulas Used

Eco Label Score

eco_score = weighted

Materials + Energy Avg

grade = (materials_score + energy_score) / 2

Packaging + Durability + Recyclability Avg

lifecycle_avg = (packaging_score + durability_score + recyclability_score) / 3

Room for Improvement

improvement = 100 - weighted

Variables

VariableDescriptionDefault
materials_scoreSustainable Materials Score(0-100)60
energy_scoreEnergy Efficiency Score(0-100)70
packaging_scorePackaging Score(0-100)50
durability_scoreDurability Score(0-100)75
recyclability_scoreRecyclability Score(0-100)65
weightedDerived value= materials_score * 0.25 + energy_score * 0.25 + packaging_score * 0.15 + durability_score * 0.20 + recyclability_score * 0.15calculated

How It Works

How to Calculate an Eco Label Score

An eco label score helps consumers compare the environmental friendliness of products.

Formula

Score = Materials(25%) + Energy(25%) + Packaging(15%) + Durability(20%) + Recyclability(15%)

Scoring Criteria

  • Materials: Recycled content, sustainably sourced, non-toxic
  • Energy: Manufacturing energy, use-phase energy
  • Packaging: Minimal, recyclable, no single-use plastic
  • Durability: Long lifespan, repairable, warranty
  • Recyclability: End-of-life recycling potential

    • Worked Example

    Score a product: Materials 60, Energy 70, Packaging 50, Durability 75, Recyclability 65.

    materials_score = 60energy_score = 70packaging_score = 50durability_score = 75recyclability_score = 65
    1. 01Materials: 60 * 0.25 = 15.0
    2. 02Energy: 70 * 0.25 = 17.5
    3. 03Packaging: 50 * 0.15 = 7.5
    4. 04Durability: 75 * 0.20 = 15.0
    5. 05Recyclability: 65 * 0.15 = 9.75
    6. 06Total: 15.0 + 17.5 + 7.5 + 15.0 + 9.75 = 64.8

    Ready to run the numbers?

    Open Eco Label Calculator