Starbucks Calorie Calculator is a simple online tool that helps you check calories and key nutrients in Starbucks drinks. Pick a drink, change the size, swap milks or syrups, and see updated calories, net carbs, fat, protein, and sugar instantly. The calculator uses official ingredient references and clear math so you can make smarter choices before you order. Save or copy drink builds for quick reference, or compare options to find lower-calorie swaps. This tool is independent and for information only; exact values may vary by location and barista. Great for planning orders and tracking.