Grocery spending is one of the most flexible parts of a household budget, but it is also one of the easiest to underestimate until the receipts start piling up. This calculator projects your weekly and monthly grocery costs based on how many people you are feeding, how often you eat out instead of cooking, and the general quality tier you shop at — from thrifty staples to premium organic choices. It gives you a realistic monthly number to plan around, and by adjusting the eat-out frequency or quality tier you can quickly see how much room there is to cut costs without a complicated meal-by-meal budget.