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Energy and environment calculators

Browse planned energy and environment calculators for consumption, efficiency and environmental measurements. Explore the units and calculation types.

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Carbon footprint calculatorCalculate your annual carbon footprint in the UK using official DESNZ greenhouse gas conversion factors for home energy, travel and flights.Gas rate calculatorCalculate boiler gross and net heat input in kilowatts (kW) in the UK from gas meter timing, using metric cubic metre or imperial test dials.Water meter calculatorEstimate your quarterly or monthly UK metered water and sewerage bill from cubic metre meter readings and annual standing charges.Dew point calculatorCalculate dew point temperature and perceived comfort level from air temperature and relative humidity using the Magnus-Tetens formula in °C and °F.Electricity cost calculatorCalculate appliance running costs in the UK based on wattage, usage hours and the Ofgem energy price cap, with daily, monthly and annual totals.Humidity calculatorCalculate relative humidity, absolute humidity and vapour pressure from air temperature and dew point using the Arden Buck psychrometric equation.Water calculatorCalculate daily and annual household water consumption in litres in the UK, compare against national benchmarks and estimate metered water bills.Electricity cost calculator USCalculate appliance electricity costs in the US based on wattage and average EIA kilowatt-hour utility rates, with daily, monthly and annual bills.Carbon footprint calculator USCalculate your annual household carbon footprint in the US using official EPA emission factors for electricity, natural gas, driving and flights.Gas rate calculator USCalculate furnace and gas appliance firing rate in BTU/hr and therms in the US by clocking meter test dials under NFPA 54 standards.Water meter calculator USEstimate your municipal water and sewer utility bill in the US from CCF or thousand gallon meter readings, volumetric rates and base fees.Water calculator USCalculate daily and annual domestic water consumption in gallons in the US, compare against USGS benchmarks and estimate metered utility bills.

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Energy & environment calculator inputs and methods

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