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# Long description

This figure shows the Target screen of the OU carbon calculator after a student has answered the questions to calculate their existing personal carbon footprint, and then decided on either a Government or a Personal target.

On the far left are the fourteen tabs that access the calculator’s screens. From top to bottom the tabs are Welcome; Your household: Room heating; Water heating; Appliances; Travel; Flying; Food; Income; Goods; Infrastructure; Summary; Target; Decarbonisation.

In the centre of the screen is the main panel with the heading ‘Target’. Under this some text reads: ‘Choose a percentage carbon footprint reduction target. You will try to meet the target by changing your answers to the calculator’s questions. Either choose a Personal target and set a percentage reduction on your existing carbon footprint. Or choose a Government reduction target on the ‘Average UK footprint’ and select from the Government target options.’

Under this text there are three radio buttons labelled: No target; Personal target; Government target. The student has chosen a Personal target to reduce their existing personal footprint by 25%. Under this there are options to set the Government target.

On the right of the screen are two stacked bar charts, the bar charts represent the student’s existing personal footprint (before they have amended the calculator entries to try and meet their reduction target) labelled You, and a footprint for an average UK inhabitant, labelled ‘Average’. The left hand stacked bar, labelled You, shows the student’s existing carbon footprint 14.89 tonnes of carbon dioxide equivalent emissions per year and its components, such as Home energy at 1.68 tonnes carbon dioxide equivalent emissions per year; Travel at 2.16 tonnes carbon dioxide equivalent emissions per year; Food at 0.91 tonnes carbon dioxide equivalent emissions per year, and so on. The right hand stacked bar, labelled Average, shows the same information for an average UK inhabitant. There is a red horizontal line to illustrate where the You footprint needs to be for a 25% personal reduction target. The red line also crosses the Average footprint bar chart for comparison.