Calculators

Free online calculators for solar, heating, electricity, loans, savings and driving costs.

☀️ Energy & Solar

Solar Panel Payback CalculatorHow many years until solar pays for itself?Balcony Solar (Plug-In Solar) CalculatorSavings and payback of a plug-in solar kit

🔥 Heating & Cooling

Home Heating Cost CalculatorEstimate your yearly and monthly heating billHeat Pump vs. Gas Furnace Cost CalculatorCompare yearly running costs side by side

💡 Lower Your Bills

Appliance Electricity Cost CalculatorWhat does a device cost to run?Shower Cost CalculatorWater and energy cost of your showers

🏦 Loans & Credit

Loan Payment CalculatorMonthly payment and total interestCredit Card Payoff CalculatorHow long until your card is paid off?

💶 Money & Saving

Compound Interest CalculatorSee how your savings grow over timeInflation Calculator: Future Value of MoneyWhat your money will be worth in the future

🔧 Home & DIY

How Much Rent Can I Afford?Your maximum monthly rent by the 30% rule

🚗 Cars & EVs

Road Trip Gas Cost CalculatorFuel cost for any trip, split by passengersEV vs. Gas Car: Fuel Cost CalculatorYearly charging cost vs. gas cost