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Solar CO2 Saving CalculatorEstimate CO2 savings from solar generation and grid emission factor.Score 52solaremissionsSolar Panel CalculatorEstimate solar panel count from energy use, sun hours, panel wattage, and system losses.Score 38solarSolar System Size CalculatorEstimate solar system size from monthly usage, sun hours, and system efficiency.Score 38solarSolar ROI CalculatorCalculate solar ROI from installation cost, yearly savings, incentives, and maintenance.Score 38solarSolar Payback CalculatorEstimate solar payback period from net system cost and yearly savings.Score 30solarFuel Cost CalculatorEstimate advanced trip fuel cost with distance modes, efficiency units, fuel price units, emissions, commute projections, and vehicle comparisons.Score 24emissionsCO2 Travel Emission CalculatorEstimate travel emissions from distance, fuel or electricity use, and emission factor.Score 22emissionsCarbon Footprint CalculatorEstimate monthly carbon footprint from transport, electricity, gas, flights, and waste.Score 22emissionsCar CO2 CalculatorEstimate vehicle CO2 emissions from distance and emissions factor.Score 22emissionsFlight CO2 CalculatorEstimate flight emissions from distance, passenger factor, and radiative forcing multiplier.Score 22emissionsHome Energy CO2 CalculatorEstimate home energy emissions from electricity and gas usage.Score 22emissionsElectricity CO2 CalculatorEstimate electricity-related emissions from kWh and grid factor.Score 22emissionsInverter CalculatorEstimate inverter size from continuous load, surge load, and safety factor.Score 14solarAppliance Energy CalculatorCalculate appliance energy use and cost from wattage, hours, days, and rate.Score 4solarkWh CalculatorCalculate kilowatt-hours from watts and runtime.Score 4solarGenerator Fuel CalculatorEstimate generator fuel use and cost from load, runtime, and fuel rate.Score 4solarElectricity Bill CalculatorEstimate electricity bill with usage tiers, fixed fees, and tax.Score 4solarMortgage CalculatorEstimate monthly mortgage payments, total interest, principal, and payoff cost.Score 2BMI CalculatorCalculate body mass index using metric or imperial units and view the standard BMI category.Score 2Compound Interest CalculatorProject future investment value with compounding frequency and recurring contributions.Score 2