Carbon Footprint Calculator

Measure your organisation's Scope 1, 2 & 3 emissions in minutes — GHG Protocol-aligned, with instant charts, hotspots and exportable reports.

Free version: basic Scope 1/2 and limited Scope 3 calculations using a sample factor set, for preliminary estimation and awareness purposes only. Compare with Subscription
Company Facilities Activity Data Results

Register your company

Tell us who's measuring. This information appears on your generated GHG report.

Add facilities

List the sites included in your organisational boundary (operational control approach).

    Optional — you can proceed with a single consolidated boundary.

    Enter activity data

    Provide annual consumption per activity. Choose which GHG Protocol scopes to include, or upload a CSV.

    Format: activity_key,quantity — e.g. diesel,12000. Download sample

    GHG Inventory Results

    Carbon footprint — Your company

    Calculated per the GHG Protocol Corporate Standard using illustrative emission factors.

    0
    Total tCO₂e
    0
    Scope 1 tCO₂e
    0
    Scope 2 tCO₂e
    0
    Scope 3 tCO₂e

    Emissions by scope

    Emissions by activity

    Multi-year comparison

    Emission hotspots

      Reduction target tracking

      Progress vs a 42% absolute reduction by 2030 (SBTi 1.5°C-aligned).

      On-track score: —

      Reference Data

      Emission Factor Library

      Browse illustrative emission factors by country, year and category — each with unit, source, version and reference. Click Select to view a factor's detail.

      FactorCategoryCountryYearValueUnitSourceVersionUpdated

      0 factors shown · Values are illustrative demo data — replace with official IPCC / DEFRA / CEA datasets in production.

      Subscription databases

      Official conversion-factor databases

      Subscribers get the full, versioned Excel databases behind the calculator — not just the illustrative sample above — with every factor's source, publication, GWP basis and revision history.

      Subscriber
      IPCC

      2006 & 2019 Refinement Guidelines factor set (Excel).

      Subscriber
      GHG Protocol

      Cross-sector and scope-specific calculation tools (Excel).

      Subscriber
      CEA & DEFRA

      India CEA grid factors and UK DEFRA conversion factors (Excel).

      Subscriber
      US EPA

      eGRID and GHG Emission Factors Hub (Excel).

      These databases are linked directly into the calculator so the correct factor is applied automatically by country, year and activity. Detailed factor-level information (source publication, GWP basis, revision history) is shown in full to subscribers; the free version shows the sample library above only.

      Unlock full databases Continue to Net Zero Planner