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Solar, EV & Home Energy Calculators & Converters
Solar, EV & Home Energy Calculators & Converters
Practical tools for solar shoppers, EV drivers, installers, and homeowners.
Also accessible via: chacharger.com · solarevcalculator.com
From solar panel sizing and battery storage to EV charging costs and home energy audits, SolarEVCalculators.com brings together practical calculators and unit converters for solar shoppers, EV drivers, and homeowners working to understand and lower their energy costs.
Who This Is For
SolarEVCalculators.com is a calculator site for three kinds of energy decisions: sizing a solar array and the battery behind it, planning electric-vehicle charging and range, and reading a house the way a utility bill actually behaves. EnterPlanet LLC operates the site from Jacksonville, Florida. Every tool runs in the browser. Nothing here is a substitute for a licensed electrician, a licensed solar installer, or the National Electrical Code. The point of the page is a number you can take into that conversation, with the formula visible, not a sales pitch.
This page is the map. The eight solar calculators, seven EV tools, and six home-energy tools in the grid are the work. Use the search box if you already know the name. Read the full guide ↓
A solar shopper who wants a panel count before the first installer visit. An EV driver who needs to know whether a 40-amp home charger is enough for the daily commute, or how long a DC fast charger will hold them on a trip. A homeowner trying to tell an insulation upgrade from a generator purchase. An electrician or engineer who wants a second pass on a sizing estimate with the assumptions in the open. A student learning why peak sun hours are not daylight hours, why depth of discharge changes bank size more than marketing watt-hours, and why a continuous load on a panel is not the same as a nameplate amp rating.
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Solar work starts from energy use and location. Panel Size converts kilowatt-hours and peak sun hours into array size. Irradiance by ZIP Code looks up those sun hours from National Renewable Energy Laboratory (NREL) solar data. NREL is now officially the National Laboratory of the Rockies; it is the same federal laboratory. Battery Storage sizes a home bank. Off-Grid System Sizing sizes the array and the bank together when there is no utility. Charge Controller and Tilt Angle size the hardware that harvests the array. Savings and Carbon Dioxide Offset turn the same system into bill and emissions language. Do not size panels without sun hours, and do not size a battery without checking that the array can recharge it.
EV work follows a trip and a wall. The Charging Station Locator uses the U.S. Department of Energy Alternative Fuel Stations dataset, also maintained by NREL. Range, Charging Time, and Charging Cost answer how far you go, how long you wait, and what you pay. Cost Comparison puts that against gasoline. Home Charger asks whether the panel can take the circuit. Battery Degradation estimates pack wear over years. Electric-vehicle efficiency figures on this site follow Department of Energy and Environmental Protection Agency published values already named on the About page.
Home-energy work looks at the building. Energy Audit and Appliance Cost show where kilowatt-hours go. HVAC Load and R-Value size heating, cooling, and insulation. Generator Size and Outage Cost plan for when the grid is gone. Home-energy benchmarks follow ENERGY STAR figures already named on About. An audit that ignores insulation, or a generator sized without starting watts, is the usual miss — the related-tool links exist so those pages get used together.
Each calculator uses a published formula and editable assumptions: system derate, safety margin, depth of discharge, charging loss, continuous-load factor. Defaults are starting points, not hidden constants. We do not invent tax credits, equipment street prices, or traffic claims. Where a rate or a sun-hour value is filled in, you can change it. Print the result if you need it on a job site. Verify it before you buy hardware or pull a permit.
If the decision is a solar array, open Solar Calculators and start with Panel Size and Irradiance. If the decision is a car or a charger, open EV and Charging Tools. If the decision is the house itself, open Home Energy Tools. Then follow the related-tool links on the page you land on. That path is the product. The grid above is the index.
EnterPlanet LLC is the operator. The About page names the data sources and the Jacksonville address. Contact is the form if a formula looks wrong. We would rather fix a calculator than hide the teaching behind a closed drawer.