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  • More transparency in food selection: apps are supporting consumers
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As citizens become more aware of their environmental
impact, numerous tools have sprung up to help us reduce our food footprint.

Food production is responsible for a quarter of greenhouse gas emissions, according to a study from the University of Oxford, published in the journal Science. Those seeking a more sustainable diet can profit from a number of apps and online tools. BBC online offers a food climate-impact calculator, using global averages to calculate impact. It’s based on data analysis from nearly 40,000 farms and 1,600 processors, packaging types and retailers. Another calculator is provided online by CleanMetrics at, where users can enter food category, item, distance travelled, amount bought and amount wasted, to summon a graph of greenhouse gas emissions. As a mobile app, Oroeco also lets you track your impact with a footprint calculator.

Consumers can scan barcodes for hundreds of thousands of UK supermarket products with the mobile app Giki. Each item is evaluated through 13 areas, including carbon footprint, sustainable palm oil and responsible sourcing. GoodGuide is another app combing a huge database of products, allowing users to check their health, environmental and social ratings.