Family Grocery Budget Calculator

Food is the largest genuinely variable line in most household budgets, and the easiest place to leak money without noticing. Everything else is fixed or nearly fixed; groceries move by hundreds of dollars a month depending on how you shop.

USDA food plans (US reference, August 2026):

The USDA prices four grocery baskets every month, from Thrifty to Liberal, for each age and sex. This calculator uses the August 2026 report:

The adult figure is the average of a man and a woman aged 19 to 50. The family column is the USDA’s own reference family, which is the household it sets the SNAP (food stamp) maximum from.

Why does one adult cost about a third of what the family of four does, rather than a quarter? Children eat less, and the USDA prices everything for a four-person household and then adjusts: add 20% for one person, 10% for two, 5% for three, and take off 5% for five or six and 10% for seven or more. A single person buys small packs and throws more away. The calculator applies the same adjustment.

You may notice Thrifty and Low-cost sit only $12 apart for an adult. That is real, not a typo. The Thrifty plan was rebuilt from scratch in 2021 and came out about a fifth higher, while the other three still rest on 2001-02 shopping baskets brought forward with food inflation.

Children cost less, teenagers about the same as adults:

Each person is priced from the USDA table for their age group. On the moderate plan a child of 1 to 4 costs about 56% of an adult, a 5 to 12 year old about 89%, and a teenager about the same as an adult. A teenage boy costs a little more than his father on most plans, and a teenage girl a little less than her mother. The tables start at age one, so a baby on formula needs its own line in your budget.

Diet type matters:

• Omnivore diet: baseline cost
• Vegetarian: roughly 10-15% lower (no meat)
• Vegan: roughly 15-20% lower but can be higher with specialty products
• Gluten-free or allergy-sensitive: 15-25% higher due to specialty items

Regional cost adjustments:

Grocery prices vary enormously by country. The base figures assume average US costs, and the region dropdown multiplies them:

These are broad country averages. Within any country the spread between a capital city and a rural town is often larger than the spread between countries, so treat the result as a starting point and correct it against two or three real receipts.

The answer stays in US dollars. The multiplier gives you the US-dollar-equivalent cost of the same groceries in that country, which is what makes the regions comparable. It is not a currency conversion, so apply an exchange rate yourself if you want the figure in the money you actually shop with.

What people really spend. The USDA plans price a nutritious basket cooked at home. Real shopping runs lower: the average US household, about 2.5 people, spent $6,224 on groceries in 2024, about $519 a month, according to the Bureau of Labor Statistics. That is roughly $207 a person, below even the Thrifty plan, partly because the same households spent another $3,945 eating out.

Money-saving strategies:

• Plan meals weekly before shopping
• Shop with a list and stick to it
• Buy seasonal produce (much cheaper)
• Freeze bread, meat, and other perishables before they go off
• Compare unit prices, not package prices
• Limit pre-packaged and processed foods (expensive per serving)
• Use store brands for staples (often 20-40% cheaper)

If everyone in the household is an adult, the age groups here buy you nothing and the grocery budget calculator asks for one number instead of four. It runs on the same $367 a month moderate-plan adult and the same household-size adjustment, so the two agree on an all-adult household eating a standard diet, and it carries a keto and an organic option this page does not.

Already have a number and want to judge it? This page tells you what to spend. The grocery budget per meal calculator goes the other way: give it what you actually spend in a week and it works out the cost per meal and per person, then grades that against the usual budget, mid-range and premium tiers. Feed it the weekly figure from here and the two agree. A family of four on the moderate plan comes to $320 a week, which over 21 meals is $3.81 a person per meal against the $3.86 this page prints. The whole gap is that 4.333 weeks of 21 meals is 91 meals a month, where this page counts 90.