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Calculate your business emissions
Our free-to-use calculators help measure your business emissions.
See the steps your company can take towards a more sustainable future through our open resources.
Why calculate?
The Global Role of SMEs
Small and medium sized companies (SMEs) make up 90% of global business and are the foundation of the world’s value chains.
Collective Impact on the Climate
Though the individual footprint of an SME might be small, together they contribute a sizable amount to the global carbon footprint. Many SMEs want to act but may not know where to start.
Why Measurement Matters
Measuring and understanding your emissions is a great first step to help your business start taking meaningful action.
Our calculators
Use our calculators to measure your emissions successfully.
To help you get started, see our action guide for advice on how to approach calculating your carbon emissions.
Small Business Carbon Calculator
A simple, accessible calculator, for small businesses starting their carbon measurement journey. Designed to help make sense of carbon measurement and identify emissions hotspots.
- Starting point for small businesses with one site
- Simple online tool
- Scope 1, 2 & 3
Advanced Business Carbon Calculator
A comprehensive, transparent and auditable calculator, ideal for medium and large businesses, with the flexibility to incorporate data from multiple sites. This provides enhanced carbon measurement to accelerate progress towards Net Zero.
- Best for multi-site businesses
- Auditable spreadsheet tool
- Scope 1, 2 & 3
Start Measuring
Small Business Carbon Calculator
This calculator is for:
- Businesses with 1-50 employees
- Businesses with one operating site
- Measuring Scope 1, 2 and 3 emissions
How it works:
- Sign in or register as a tools user
- Add your business information
- Add your emissions data
Start Measuring
Advanced Business Carbon Calculator
This calculator is for:
- Businesses with 50-500 employees
- Businesses with multiple sites
- Measuring Scope 1, 2 and 3
How it works:
- Request access
- Add your business data
- See your emissions
This calculator will prompt you to use your google account or link your existing email to google.
Compare tools
Compare calculators and find the one that suits best for you.
Small Business Carbon Calculator
Best For
One-site businessesFormat
Simple online toolScope
1, 2 & 3Business Size
1-50Cost
FreeInformation required
Basic
Start Measuring
Small Business Carbon Calculator
This calculator will be for:
- Businesses with 1-50 employees
- Businesses with one operating site
- Measuring Scope 1, 2 and 3 emissions
How it works:
- Sign in or register as a tools user
- Add your business information
- Add your emissions data
Advanced Business Carbon Calculator
Best For
Multi-site businessesFormat
Auditable SpreadsheetScope
1, 2 & 3Business Size
AnyCost
FreeInformation required
IntermediateStart Measuring
Advanced Business Carbon Calculator
This calculator is for:
- Businesses with 50-500 employees
- Businesses with multiple sites
- Measuring Scope 1, 2 and 3
How it works:
- Request access
- Add your business data
- See your emissions
This calculator will prompt you to use your google account or link your existing email to google.
Have questions?
To help you get started, see our action guide for advice on how to approach calculating your carbon emissions.
If you have any questions about our carbon measurement offering then please visit our FAQ. If your question is not covered by the FAQ or if you would like to give feedback on any of the carbon calculators then please contact us via our form and select the topic “Tools and Resources”.
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