Alcohol contains 7 kcal per gram — almost as calorie-dense as fat.
A pint of beer = ~200 kcal. A glass of wine = ~123 kcal. A shot = ~97 kcal.
Mixers (soda, juice) add 80–150 additional calories per drink.
This tool is most useful for tracking trends rather than obsessing over a single data point. Run the calculation monthly with consistent measurement conditions to see whether your metric is moving in the right direction.
The most common mistake is treating the result as a precise measurement rather than an evidence-based estimate. All body metric calculators have margins of error — use the result as a tracking baseline, not a clinical diagnosis.
A personal trainer uses the calculator with a new client to set a measurable starting point. Re-running the calculation at 4-week intervals provides an objective progress metric that supports motivation and programme adjustments.
A standard 5 oz glass of wine contains approximately 120–130 calories.