Free energy cost and carbon footprint calculators. Calculate solar savings, electric bills, carbon emissions, and more — no signup required.

• 22+ Free Tools: Access a comprehensive suite of calculators for energy costs, solar savings, and carbon footprint.

• 100% No Signup: Get instant results without needing to create an account, provide an email, or enter credit card details.

• Save Energy. Save the Planet.: Understand your energy consumption and environmental impact to make informed decisions for a greener lifestyle.

Explore Calculators:

• Home Energy Cost Calculator: Estimate your total annual home energy bill based on location, home size, and usage habits.

• Electric Bill Calculator: Identify the main drivers of your electric bill and discover potential cost-saving areas.

• LED vs Incandescent Savings Calculator: Quantify your annual savings by switching from incandescent to LED bulbs.

• Insulation Savings Calculator: Estimate potential savings on heating and cooling by upgrading your home's insulation.

• Heating vs Cooling Cost Calculator: Compare seasonal heating and cooling expenses to understand where your energy expenditure goes.

• Heating Cost by Fuel Type Calculator: Compare the costs of heating with gas, electric, heat pump, propane, and oil at local rates.

• Appliance Energy Cost Calculator: Determine the daily, monthly, or yearly running cost of any appliance.

• Solar Panel Savings Calculator: Estimate electricity savings from installing solar panels based on your location and energy usage.

• Solar Panel ROI Calculator: Calculate the payback period and long-term return on investment for solar panel installations.

• Wind Turbine Calculator: Estimate the electricity generation potential of a small wind turbine for your property.

• Battery Storage Calculator: Determine the appropriate battery storage size for a home solar setup and its associated savings.

• Carbon Footprint Calculator: Calculate your total annual carbon footprint across energy, transport, food, and lifestyle.

• Flight Carbon Calculator: Assess the CO₂ emissions of flights and explore offsetting options.

• Car vs EV Carbon Calculator: Compare the lifetime carbon emissions of gasoline-powered cars versus electric vehicles.

• Diet Carbon Calculator: Understand the carbon impact of your diet and identify ways to reduce it.

• Home Carbon Footprint Calculator: Calculate carbon emissions from your home's heating, cooling, and appliance usage.

• Water Usage Calculator: Estimate household water consumption and identify areas for reduction.

• Rainwater Harvesting Calculator: Estimate potential rainwater collection from your roof and associated water bill savings.

• Tree Planting Offset Calculator: Determine the number of trees needed to offset your carbon footprint.

• Green Home Upgrade ROI Calculator: Calculate the return on investment for eco-friendly home improvements like solar, insulation, and heat pumps.

• Space Heater Cost Calculator: Determine the hourly, daily, and monthly cost of operating a space heater.

• Washing Machine Energy Cost: Calculate the exact cost to run a washing machine per load, month, and year, including water and electricity.

Science-based estimates and practical guides

• All calculators utilize established energy formulas and real utility rate data for accurate results.

• Tools are accessible and functional on any device, including desktops, tablets, and phones.

• The platform is committed to being free forever with no hidden fees.