Environment & Climate

Free Carbon Footprint Calculator — estimate your annual CO₂ emissions from transportation, home energy, diet, and shopping. Compare to global averages, see trees needed to offset, and get personalized reduction tips.

Free Cryptocurrency Carbon Footprint Calculator — measure the CO2 emissions, energy consumption, and real-world environmental impact of Bitcoin, Ethereum, Solana, and 7 other cryptocurrencies per transaction, mining rig, NFT activity, or holdings.

Free Electricity Usage Calculator — estimate daily, monthly, and annual energy consumption and cost for any appliance or your whole home. Track CO₂ emissions, compare appliances, and find savings.

Free Solar Panel Wattage Calculator — estimate how many solar panels you need, required system size in kW, annual energy production, roof area, cost, payback period, and CO₂ offset for on-grid or off-grid solar installations.