How it Works

The science and methodology behind carbon calculation

Why Accuracy Matters

Understanding your carbon footprint is the first step toward reducing it. Without accurate data, it's impossible to identify the most significant sources of emissions or to track the effectiveness of reduction strategies. Inaccurate reporting can lead to "greenwashing," where environmental impacts are understated, potentially leading to regulatory risks and loss of consumer trust.

The Science of Carbon Footprinting

Carbon footprinting is a method to estimate the total emission of greenhouse gases (GHG) in carbon dioxide equivalents (CO2e). This is crucial because different gases have different "Global Warming Potentials" (GWP).

Technical Principles

  • GHG Protocol: The most widely used international accounting standard. It categorizes emissions into three "Scopes":
    • Scope 1: Direct emissions from owned or controlled sources.
    • Scope 2: Indirect emissions from the generation of purchased energy.
    • Scope 3: All other indirect emissions in a company's value chain (e.g., raw materials, transportation).
  • LCA (Life Cycle Assessment): A systematic analysis of the environmental impact of products during their entire life cycle (from raw material extraction to disposal).

Mathematical Calculation

The basic mathematical formula for calculating a carbon footprint is:

Emissions = Activity Data × Emission Factor × GWP

Components of the Formula:

  1. Activity Data: This is a quantitative measure of an activity that results in GHG emissions. Examples:
    • Amount of electricity used (kWh)
    • Amount of natural gas burned (m³)
    • Weight of raw material used (kg)
  2. Emission Factor (EF): A coefficient that converts activity data into GHG emissions. It represents the average emission rate of a given GHG for a specific source relative to units of activity.
    Example: The EF for burning 1 liter of diesel is approximately 2.68 kg CO2e.
  3. Global Warming Potential (GWP): A factor used to compare the relative potency of different GHGs to CO2 over a specific time horizon (usually 100 years).
    • CO2 GWP = 1
    • Methane (CH4) GWP ≈ 28
    • Nitrous Oxide (N2O) GWP ≈ 265

Free vs. Paid Versions

In our Free Version, we use statistical averages and best-guess estimates for Bill of Materials (BOM) based on the product category if no specific details are provided. You can now also provide advanced details like exact BOM, energy usage, and logistics in the free version to increase accuracy.

The Paid Version offers even more extensive input options, a more user-friendly interface for managing complex data, and produces audit-ready reports tailored to your unique production process.

Note on Privacy: Reports generated using the free version are made available to all users in our "Existing reports" section to promote transparency and shared learning. Reports from the paid version remain strictly private and visible only to the user who ordered them.