Which fat percentage does this cup-to-gram table assume?

The standard full-fat variant unless otherwise noted. Expect 1–3 g per cup difference for reduced-fat or skim.

Can I swap whole Half and half for skim at the same gram weight?

For mass yes, but fat content changes flavor, browning and texture. In baking, match the variant the recipe expects rather than the raw gram count.

By Fidamen-Chefsolver Team | Reviewed by Ugo Candido

Half-and-half; mix of milk and cream, richer than milk, lighter than cream.

Ingredient

Weigh for coffee, sauces, or custards; shake carton for consistency before measuring.

Which fat percentage does this cup-to-gram table assume?: The standard full-fat variant unless otherwise noted. Expect 1–3 g per cup difference for reduced-fat or skim.
Can I swap whole Half and half for skim at the same gram weight?: For mass yes, but fat content changes flavor, browning and texture. In baking, match the variant the recipe expects rather than the raw gram count.