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Explore free carbon calculators
We’ve curated a list of free carbon calculators available by non-profit initiatives or as a simple ‘freemium’ give-away by some ESG tech providers. If you know a great tool we’ve missed, let us know.
LilMa Green Scope 1-2 Emissions Calculator
By: Mags Arrow
Practical and simple for small firms in the UK.
Region covered:Â
UK
Access:Â
Free
LilMa Green Advanced Micro Business Carbon Calculator
By: Mags Arrow
Practical and manageable for small businesses, and aligned to key standards.
Region covered:Â
UK
Access:Â
Free
LilMa Green Simple Micro Business Carbon Calculator
By: LilMa Green
Designed specifically for small and micro businesses, and with options for advanced or simple calculations.
Region covered:Â
UK
Access:Â
Free
Plan A free carbon footprint calculator for business
By: Plan A
Free carbon calculator, including all three scopes.
Region covered:Â
Global
Access:Â
Free with registration
Digital Emissions Calculator by Small99
By: Small99
Get an estimated figure of your annual digital emissions, like email, virtual calls and website.
Region covered:Â
UK
Access:Â
Free
Calculator for Small Businesses by Small99
By: Small99
Get 5 climate actions your business can take in just 3 minutes.
Region covered:Â
UK
Access:Â
Free with registration
Julie’s Bicycle Creative Climate Tools
By: Julie’s Bicycle
A free set of unique carbon calculators developed by Julie’s Bicycle specifically for the cultural sector.
Region covered:Â
Global
Access:Â
Free with registration
Simplified GHG Emissions Calculator
By: US Environmental Protection Agency (EPA)
Credible GHG calculator for small businesses, especially in the US.
Region covered:Â
USA
Access:Â
Free
SME Carbon Footprint Calculator
By: Carbon Trust
Credible way to measure Scope 1 and 2 for small UK businesses.
Region covered:Â
UK
Access:Â
Free with registration
Small Business Carbon Calculator
By: SME Climate Hub
A simple carbon calculator for small businesses, aimed at those just getting started.
Region covered:Â
Global
Access:Â
Free with registration
The Carbon Footprint Small Business Calculator
By: Sustrax
Measure the carbon footprint of your small business with this calculator by Sustrax.
Region covered:Â
Global
Access:Â
Some content free
Corporate carbon footprint calculator
By: CarbonChain
Free rough corporate carbon footprint tool by CarbonChain, an easy way to get started.
Region covered:Â
Global
Access:Â
Free with registration
Website Carbon Calculator
By: Wholegrain Digital
Measure your website’s environmental impact.
Region covered:Â
Global
Access:Â
Free
myclimate carbon calculators
By: myclimate
myclimate provides a free online carbon calculator for flights, events, car trips, cruises, households, and organisations.
Region covered:Â
Global
Access:Â
Free
GHG Equivalencies Calculator
By: US Environmental Protection Agency (EPA)
Convert emissions or energy data into concrete terms you can understand — such as the annual CO2 emissions of cars, households, and power plants.
Region covered:Â
USA
Access:Â
Free
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ESG Reporting & Compliance
Intermediate
Emissions Reporting Under ESRS E1
Offered by:Â
Sustainability Reporting Navigator Academy
3 hours of video plus reading and assessment
Online Self-Paced
Certificate of Completion
Best for:
Business professionals looking to deeply understand ESRS E1.
Free
  Â
Water Management
Beginner
Water Risk Crash Course
Offered by:Â
Water Security Collective
Six 45-min trainings
Online Self-Paced
Certificate of Completion
Best for:
Those wanting a good grounding in water management & risk.
$97
  Â
Carbon & Climate Management
Intermediate
Quantifying the Carbon Footprint of Products
Offered by:Â
British Standards Institute
2 days (live online)
Online Live (Instructor-led)
Certificate of Completion
Best for:
Anyone involved in quantifying the carbon footprint of products for their organization.
£1,565
  Â
