Explore all our free tools to plan and optimize your off-grid solar system.
Our comprehensive collection of 15+ free solar calculators helps you plan every aspect of your off-grid or grid-tied solar system. From initial energy assessment to financial analysis, these tools provide accurate sizing for panels, batteries, inverters, and wiring. All calculators are specifically designed for Canadian solar installations with provincial electricity rates, rebates, and sun hour data.
💡 New to solar planning? Start with the Load Calculator to determine your energy needs, then use the Solar Panel Sizing Calculator, followed by Battery Bank and Inverter calculators. Finish with our ROI and Payback Period calculators for financial analysis.
Convert current between amps (A) and milliamps (mA).
Determine current draw from battery capacity over time.
Convert energy (mWh) to charge (mAh) using voltage.
Convert charge (mAh) to energy (Wh) using voltage.
Estimate daily energy consumption of appliances.
Calculate panels needed based on energy requirement and sun hours.
Determine battery capacity for autonomy days without sun.
Select inverter capacity for peak and surge loads.
Size PWM & MPPT controllers for your solar array.
Estimate wire size and cost for your off-grid solar installation.
Canadian solar tilt and peak sun hour calculator powered by NASA data.
Estimate system size, net cost after rebates, annual savings, payback period, and ROI.
Calculate exact break-even date with interactive timeline and financing comparison.
Estimate CO₂ offset by replacing grid or diesel power with solar.
Explore government & utility rebates and incentives to reduce solar system costs.
Estimate how long a battery can power devices based on load and capacity.
Calculate solar and battery requirements for charging your EV off-grid.
Estimate the generator size required to support your off-grid loads during low solar production or winter months.
All calculators include accurate data for Canadian provinces including electricity rates, solar rebates, peak sun hours, and grid emission factors. Provincial auto-fill makes planning faster and more accurate.
No registration, no hidden fees, no credit card required. All 15+ calculators are completely free to use as many times as you need for your solar planning and system optimization.
From technical sizing (panels, batteries, inverters, wiring) to financial analysis (ROI, payback, carbon offset) to simple conversions (amps, watt-hours), we cover all aspects of solar planning.
Built with industry-standard formulas and verified against real installations. Data sources include Natural Resources Canada, Energy Hub, NASA solar databases, and certified installer quotes.