Carbon emission is carbon gas that is released every time food is produced. Food waste is food that completes the food supply chain until the final product and suitable for human consumption but discarded regardless of whether it is rotten or expired. Wasting food means that greenhouse gas emissions that is released during food production are being wasted. Bakery is the biggest contributor in the food industry that contributes to food waste. Therefore, this project developed a carbon footprint calculator for bakery to effectively monitor carbon released from food waste. User interface design for the web application using persuasive techniques which are reduction, suggestion, conditioning, self-monitoring, and surveillance. The effectiveness of the system is decided by evaluation that consists of monitoring their carbon footprint and behaviour change that is conducted to three bakery owners for three weeks. Two phases of testing were conducted that involved pre-evaluation and post-evaluation. As a conclusion, web-based carbon footprint calculators with persuasive technology techniques manage to motivate bakery owners to change their behaviour in reducing food waste.
