MAKE THE NUMBERS EASIER TO UNDERSTAND.

Money, in plain numbers

Everyday calculators for real-life money decisions.

Quick utility calculators for pay, debt, home, retirement, college, care, taxes, transportation, and family costs. Each result shows the answer, the assumptions, and what to check next.

Calculators269across 18 categories
Combo tools26chain several at once
Live data4 feedsFX, CPI, EIA, vehicle
MobileReadyinstallable web app

Combo calculator

Energy Independence Calculator

Estimate solar net cost, utility savings, payback, battery impact, and 10-year value.

Energy payback

Ready to calculateEnter your values, then tap Calculate.

Enter your values and tap Calculate to see the result.

How this combo works

Subtracts incentives from system cost and compares annual bill savings against maintenance and battery cost.

Best next calculator
Solar Panel ROI Calculator
Stress test
Compare no battery, battery, lower offset, and higher utility inflation.

What this means

This combo page keeps the math quick by combining a few common parts of the decision. For a higher-stakes choice, use the linked calculators below and then move into a full SumPilot decision tool.

Included calculators

Solar Panel ROI CalculatorEstimate solar panel roi in seconds with a simple, mobile-friendly calculator.Utility Cost CalculatorEstimate utility cost in seconds with a simple, mobile-friendly calculator.

Related calculators

Solar Panel ROI CalculatorEstimate solar panel roi in seconds with a simple, mobile-friendly calculator.Utility Cost CalculatorEstimate utility cost in seconds with a simple, mobile-friendly calculator.