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Transparent calculators and dashboards built around recognized sustainability methodologies.
Estimate personal or organizational emissions across major consumption categories.
Calculate footprintMeasure blue, green, and grey water impacts across diet and everyday consumption.
Measure water useEstimate ecosystem biomass and soil organic carbon using IPCC Tier 1 factors.
Estimate carbon stockLive Kp index, NOAA forecast, and state-by-state viewing thresholds for the northern lights.
View aurora toolEnterprise ESG tools
5-tab on-site ISSB template: Note 6 PPE exposure, 4-page SRRO card builder, IIASA carbon stress-test & Appendix 1.
Open Template & Modeler →PPACompare Virtual PPA, Physical PPA, and On-Site Solar cashflows, strike vs hub capture, and Scope 2 abatement.
Model PPA Cashflows →VCMBlend REDD+, ARR, biochar, ERW, BECCS & DAC credits with Oxford Principles alignment and net-zero glidepaths.
Build Credit Portfolio →LL97Calculate NYC building emissions across 15 property types vs 2024–2030 limits, 8/t fines, and retrofit payback.
Calculate LL97 Penalty →GHGCorporate inventory across all scopes with location/market Scope 2, intensity metrics, and audit-ready outputs.
Launch GHG Engine →CBAMModel embedded emissions, EUA certificate price exposure, third-country carbon deductions, and import tariffs.
Calculate CBAM Duty →CSRDAssess impact and financial materiality across ESRS E1–E5, S1–S4, and G1 topics with an auditable matrix.
Check Materiality →SBTiCompare 1.5°C near-term and net-zero reduction trajectories, abatement levers, and required annual glidepaths.
Model SBTi Pathway →AI DCModel a 5–250 MW AI campus: GPU rack power, liquid vs air cooling PUE/WUE, Scope 2 emissions, and PPA sizing.
Model Data Center →BESSCalculate peak demand-charge shaving, TOU arbitrage, ITC tax credits, LCOS, and 15-year commercial BESS NPV.
Calculate BESS ROI →FLEETCompare electric vs diesel/gasoline vans, box trucks, and Class 8 semis across fuel, depot charging, and Scope 1.
Model EV Fleet →HVACCompare commercial and residential heating bills, COP efficiency, carbon abatement, and multi-year payback.
Compare Heat Pump →Explore by topic
Why trust us
Every explainer and calculator should make methodology, sources, authorship, dates, and uncertainty easy to inspect.
Our editorial standardsWhat our 18 open-access ESG calculators and research guides cover for sustainability teams, energy engineers, carbon project developers, and science educators — plus how to send feedback or request expert validation.
Combines the 5-tab IFRS S1 & S2 financial exposure template, GHG Protocol Corporate Standard inventory, and EU CBAM tariff forecasting with transparent emission factors.
Models Virtual vs. Physical PPA strike spreads, commercial battery storage ITC/NPV cashflows, GPU cluster liquid cooling water footprints, and NYC Local Law 97 retrofit payback.
Computes above-ground tree biomass, root-to-shoot ratios, litter/deadwood pools, and bulk-density corrected soil carbon (tC/ha & tCO2e/ha) alongside Article 6 credit portfolios.
Makes climate literacy, renewable energy, and kid-friendly carbon footprint math engaging for classrooms and families with zero logins, zero tracking, and instant classroom printouts.
Used one of our 18 calculators, live NOAA trackers, or research guides? Select the tool, rate it, and email your feedback to our editorial team.
All 18 on-screen calculators are 100% free. When your company needs an official, auditor-ready annexure or expert red-flag review for board sign-off, our PhD team validates your data and issues a formal report.