Conklin & de Decker developed a new carbon dioxide calculator for business aircraft. The Microsoft Excel-based calculator provides estimated carbon offset costs by aircraft make and model. Conklin’s CO₂ Calculator allows the user to select the aircraft type, make and model and hours flown per year and then predicts fuel consumption while providing CO₂ emissions and offset costs per year. It can also break down the annual CO₂ offset by hour, trip and seat.