Scope 1 Direct Scope 2 Indirect Scope 3 — All 15 Categories

Scope 3 & GHG Emissions Calculator

Build your complete corporate GHG inventory across all three scopes and all 15 Scope 3 categories as defined by the GHG Protocol Corporate Value Chain Standard. Includes emission intensity benchmarking against your industry sector.

Personal Carbon Calculator
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Scope 1
Direct
Company-owned sources
+
⚡
Scope 2
Indirect Energy
Purchased electricity/heat
+
🌐
Scope 3
Value Chain
15 upstream & downstream categories
=
📊
Total GHG
Inventory
Full corporate carbon footprint

Organisation Settings

$

Scope 1 & 2 Totals

Enter your already-calculated Scope 1 and Scope 2 to see your full GHG inventory.

tonnes

Combustion, company vehicles, refrigerants

tonnes

Purchased electricity, steam, heat, cooling

Total GHG Inventory

0.00t CO₂e

Annual (Scope 1 + 2 + 3)

Scope 1
0.00t
Scope 2
0.00t
Scope 3
0% of total0.00t

Scope 3 Breakdown

Upstream (Cat. 1–8)0.00t
Downstream (Cat. 9–15)0.00t

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About This Tool

Scope 3 is where most corporate emissions actually sit, and where most inventories fall apart. This tool walks all fifteen GHG Protocol Scope 3 categories — from purchased goods and business travel through to end-of-life treatment of sold products — so you can see which ones are material to your organisation and which you can reasonably screen out.

It is a screening and estimation aid rather than an assurance-grade tool: a reported inventory needs primary supplier data and, usually, third-party verification. Everything you enter stays in your browser. For details on analytics and third-party ad requests, see our Privacy Policy.