If you're wondering how many slices of bread is 100g, the answer depends on the type and thickness of the bread. A standard slice of sandwich bread usually weighs between 25 and 30 grams, so 100 grams is roughly equal to 3 to 4 slices. Whole wheat, white, and multigrain breads may vary slightly in weight. Using a kitchen scale is the best way to measure bread accurately for recipes or nutrition tracking.