Herb & Lime Lab
Purpose: quick weight and volume conversions for everyday cooking — plus an honest cup-to-gram helper that asks what you are measuring.
A cup measures volume; a gram measures weight. Converting cups to grams depends on the ingredient — a cup of flour weighs far less than a cup of sugar. The basic converters below use exact unit factors; the ingredient-aware converter uses stated approximations, not lab measurements.
How to use it
- Pick a converter, enter an amount, choose the units.
- For cups ↔ grams, tell us the ingredient so we can apply the right approximate factor.
Weight
Exact factors: 1 oz = 28.3495 g · 1 lb = 453.592 g.
Volume
Exact factors (US): 1 cup = 236.588 ml · 1 tbsp = 14.7868 ml · 1 tsp = 4.92892 ml.
Cups ↔ grams, by ingredient
The flour, sugar, and rice factors are approximations — packing, grind, and brand shift the real number. Fine for weeknight cooking, not for precise baking.