Professional-grade calculators to plan your solar investment
All calculators created by our licensed Professional Engineers
Calculations based on real-world data and industry standards from licensed professionals
Get immediate calculations without waiting for quotes or consultations
All calculations happen in your browser - your data never leaves your device
No registration required, no credit card needed, completely free to use
Our calculators provide quick estimates, but a professional design gives you exact specifications, equipment recommendations, and permit-ready documentation.
Our calculators use industry-standard formulas and real-world data. They provide estimates within 10-15% accuracy. For exact specifications, we recommend getting a professional design.
No! All calculators are completely free to use without registration. Your calculations are private and performed entirely in your browser.
Currently, you can take screenshots of your results. We're working on adding export functionality. For detailed reports, consider our professional design service.
Use these estimates to determine if solar makes sense for you. When ready, request a professional design for exact specifications, equipment lists, and permit-ready documents.