Plain brewed coffee has near zero calories — only 1 kcal per 100 g. An umbrella review of 201 meta-analyses (Poole et al., BMJ 2017) found 3–4 cups per day linked to a 17% lower all-cause mortality. The calories come from any milk, sugar, or syrup added — those are what to track.
How should I track Coffee, brewed, prepared with tap water?
Liquid calories from Coffee, brewed, prepared with tap water are easy to overlook because drinks do not trigger the same fullness signals as solid food. A meta-analysis (Wehling & Lusher, Am J Clin Nutr 2021) confirmed that people underreport beverage intake more than solid food. Most people pour 30–50% more than the label serving size without realizing it. Use a kitchen scale to weigh your glass or bottle once — you will know your exact pour going forward. This one calibration step can save you from hundreds of untracked calories per week.