Powerful Tools for
Smarter Energy Decisions
Free, NREL & DOE-aligned calculators and converters to model solar ROI, LCOE, battery sizing, EV TCO, heat pump balance points, and utility tariffs.
100% Free
No sign-up required
Engineering Math
NREL & DOE benchmarks
Privacy First
100% browser-based
AI Usage Carbon Calculator
Calculate the carbon footprint of your AI prompts.
Carbon Offset Calculator
Calculate the cost to offset your unavoidable carbon emissions.
Flight Carbon Calculator
Calculate the exact carbon emissions of your next flight.
Food & Diet Carbon Calculator
Calculate the exact carbon emissions of your diet.
Home Carbon Cut Tracker
See how solar, efficiency improvements, and electrification reduce your emissions.
Net Zero Calculator
Track your progress toward a net-zero lifestyle.
Net Zero Roadmap Generator
Generate a roadmap to Net Zero emissions.
Personal Sustainability Audit
Audit your personal lifestyle for carbon impact.
Website Carbon Calculator
Estimate the carbon footprint of your website.
Small Calculations,
Big Impact
Every calculation you make brings us closer to a cleaner, more sustainable future.
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