Regular chewing gum has 360 kcal per 100 g. A single piece is ~3 g and 10 kcal, mostly from sugar coating. Negligible in a macro budget unless you chew several packs a day.
About this food
How should I track Chewing gum?
The trickiest part about tracking Chewing gum is that small portions pack a lot of calories, and most people estimate sweet portions poorly. Research (Almiron-Roig et al., Appetite 2013) found that calorie-dense foods are underestimated by 50–200% when portioned by eye. Weighing on a scale takes the guesswork out. And here is the mindset shift that helps: tracking sweets is not about guilt. It is about awareness. When you log a treat honestly, you can plan around it and still hit your targets for the day.