Finance Calculators

Model project ROI, seller profit, and property cash flow with focused calculators built for high-value financial decisions.

Solar Payback & ROI CalculatorCalculate solar panel payback period, 25-year savings, and ROI using monthly electric bill, solar system size, region, and installation cost.Amazon FBA Net Profit CalculatorCalculate Amazon FBA net profit margin, estimated fees, and per-unit profit using product cost, sale price, package dimensions, weight, and storage duration.Real Estate Cap Rate & Cash Flow CalculatorCalculate cap rate, cash-on-cash return, and monthly net cash flow using purchase price, down payment, mortgage rate, rent, vacancy, tax, and insurance.