Best AI tools for calculate carbon footprint (sustainability manager)

5 tools selected and reviewed

Running a carbon footprint by hand, juggling spreadsheets and scattered emission factors, takes weeks. These tools collect data, calculate emissions across scopes 1, 2, and 3, and generate an actionable report.

Our ranking, from best suited to French SMEs to most complete for large groups.

Our quick recommendation

1Highest rated
GreenlyEnergy & environment

Manage your carbon footprint and CSRD compliance from a single AI platform

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2Excellent choice
CarboEnergy & environment

Ready-to-use carbon accounting tool for French SMEs, compliant with the ADEME Bilan Carbone method, from €90/month

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3Worth a look
Plan AEnergy & environment

Science-based carbon accounting and ESG reporting software, developed in Berlin

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All results

5 tools
ToolBest forPriceFRLevelVerdictRating
GreenlyManage your carbon footprint and CSRD compliance from a single AI platformPaid🇫🇷IntermediateVery good★ 4.4
CarboReady-to-use carbon accounting tool for French SMEs, compliant with the ADEME Bilan Carbone method, from €90/monthPaid🇫🇷BeginnerGood choice★ 4.2
Plan AScience-based carbon accounting and ESG reporting software, developed in BerlinPaidIntermediateGood choice★ 4.2
PersefoniAudit-grade carbon accounting software for enterprises and financial institutionsFreemiumIntermediateVery good★ 4.3
WatershedEnterprise AI platform for measuring, reducing, and verifying carbon emissions globallyPaidIntermediateVery good★ 4.5

Frequently asked questions

What's the best AI for calculating a company's carbon footprint?

Greenly is the reference for French SMEs, with step-by-step support through final report. Carbo is a lighter French alternative. Watershed and Persefoni target larger multi-site enterprises more.

Do these tools cover scope 3 (indirect emissions)?

Yes, Greenly, Plan A, and Persefoni include scope 3 calculation, the most complex as it depends on suppliers and value chain, using emission databases and AI to estimate missing items.

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