Household Grocery Budget Calculator

How this grocery budget calculator works

You type one weekly dollar amount per person. The label next to it is a note for you, such as an age-sex group copied from the USDA table. The script never looks that label up. Empty rows are skipped. A row with a note but no cost, or a cost that is not a number, is named in the warning and left out of the sum. Negative costs are rejected. There is no hidden price list. If every cost box is empty, there is no result.

The sum is those weekly costs added together, in cents, so a figure such as 58.50 is 5,850 cents before any percent is applied. The household-size adjustment comes from the footnote on the USDA Food Plans report, checked on this site October 2, 2026. USDA says the costs given are for individuals in 4-person households, and then: 1-person, add 20 percent; 2-person, add 10 percent; 3-person, add 5 percent; 4-person, no adjustment; 5- or 6-person, subtract 5 percent; 7- or more person, subtract 10 percent. The same footnote says to sum the food costs for each individual first, and then apply the adjustment for the household size. This page does those two steps in that order. The size must be a whole number of at least 1. A size of 5 and a size of 6 both use minus 5 percent. A size of 7 and any larger whole number use minus 10 percent. A decimal size is rejected rather than rounded into a different percent.

Monthly cost is the adjusted weekly cost times 4.333. The script uses 4.333 as the fraction 4333/1000, which is the same four-decimal figure USDA names, and it rounds the product to the nearest cent. USDA's own footnote says published costs are rounded to the nearest 10 cents. This page does not re-round your pasted weekly cells to the nearest dime before multiplying, and it does not replace its result with the monthly number printed in the USDA table. Those two figures can differ. The worked example below shows the gap on purpose, with the August 2026 report as an illustration, not as a price this site maintains.

Your spending is optional. If you type a weekly amount, the page subtracts the adjusted weekly plan from that amount, and it also multiplies your weekly spending by 4.333 so the monthly comparison uses the same factor. A positive difference means the spending you typed is above the adjusted plan figure. A negative difference means it is below. Zero means the two match at the cent. If you switch the period to per month, the monthly figure is the one you typed, and the weekly figure is that amount divided by 4.333, again rounded to the cent. The page does not decide that one side is the correct grocery bill. It also does not add tax, restaurant meals, or household supplies unless those dollars are inside the number you typed. Say which number you typed, and keep that choice.

The four plans are the Thrifty Food Plan, the Low-Cost Plan, the Moderate-Cost Plan, and the Liberal Plan. USDA's report, read here on October 2, 2026, describes them as successively higher cost levels and says each plan specifies quantities of foods and beverages that could be purchased and prepared to make meals and snacks at home. The Thrifty footnote on that page says another basis of the Thrifty Food Plan is that all meals and snacks are prepared at home. The three higher plans carry the same at-home basis in their own note. This calculator does not pick a plan and does not tell you which column matches your kitchen. You choose the column on USDA's page and paste its weekly costs.

Alaska and Hawaii are separate on that report. The August 2026 Thrifty section prints a reference-family monthly cost of $1,294.70 for Anchorage and $1,556.00 for Hawaii. Those two numbers are quoted from the report. This tool does not derive a weekly cost from them, and it does not apply a second Alaska or Hawaii percent on top of the household-size percent. If you are pricing a household there, use the weekly costs from the Alaska or Hawaii material USDA points to, paste those weekly costs, and let this page do only the sum, the size percent, and the 4.333 step. The report's page date on the copy read for this article was September 24, 2026, and the tables were labeled August 2026. The next monthly file will differ. Check the current report before you treat any dollar figure here as something to budget against.

Worked examples

Every dollar in the August 2026 illustration is copied from the Thrifty Food Plan table on the USDA page as it stood when this page was written. It is an illustration so the arithmetic can be checked by hand. It is not a live market price, not a recommendation of what to spend, and not a table this site updates. Load August 2026 illustration fills these four weekly costs and a hypothetical spending figure of $250.00 a week. The $250.00 is not from USDA. It is a number typed so the comparison line has something to subtract.

Reference-family weekly cells from that Thrifty table: woman 20–50 years $58.50, man 20–50 years $73.60, child 6–8 years $48.30, child 9–11 years $55.80. The sum is 58.50 + 73.60 + 48.30 + 55.80 = $236.20. Household size 4 uses no adjustment, so the adjusted weekly cost stays $236.20. Monthly is 236.20 × 4.333 = $1,023.45 after rounding to the cent. USDA's own reference-family row on the same report prints $236.30 per week and $1,023.70 per month. The ten-cent weekly gap is the difference between adding the four already-rounded weekly cells and the weekly cell USDA printed for the family. The printed monthly cell equals the sum of the four printed monthly cells on that table, $253.70 + $318.90 + $209.20 + $241.90 = $1,023.70, not $236.20 × 4.333. When you need the number in the official row, read the official row. When you need the footnote's two steps applied to weekly cells you pasted, use this page.

The same report's monthly cell for the woman 20–50, $253.70, is not what this formula returns from the weekly cell alone. 58.50 × 4.333 rounds to $253.48. The man 20–50 weekly cell of $73.60 times 4.333 rounds to $318.91, next to a printed monthly cell of $318.90. The gap is rounding. USDA rounds published costs to the nearest 10 cents. This page rounds the product of the weekly figure you paste to the nearest cent. Neither step is a claim that food got cheaper or more expensive between the two columns.

Two adults from the same illustration, and nobody else: $58.50 + $73.60 = $132.10. Household size 2 adds 10 percent. 132.10 × 1.10 = $145.31 a week. Monthly is 145.31 × 4.333 = $629.63. A one-person illustration using only the woman's weekly cell adds 20 percent: 58.50 × 1.20 = $70.20 a week, and $70.20 × 4.333 = $304.18 a month. That one-person result is the footnote applied to a single pasted cell. It is not the woman's printed monthly cell, and it is not a budget for a household of four.

Spending comparison on the four-person illustration: you type $250.00 per week. The difference versus the adjusted plan is 250.00 − 236.20 = $13.80 a week above the plan figure. The same weekly spending times 4.333 is $1,083.25 a month, which is 1,083.25 − 1,023.45 = $59.80 above the plan's monthly figure. If you instead type $1,083.25 as a monthly amount, dividing by 4.333 returns $250.00 a week for this particular pair of numbers, and the differences match. The $250.00 is still a made-up receipt, not a survey. A result below the plan would be printed as below. Matching to the cent would be printed as a match. None of those words means the plan is a spending limit.

The percent steps can be checked with a round $100.00 that is not a USDA price. One person: $120.00 a week and $519.96 a month. Two people: $110.00 and $476.63. Three: $105.00 and $454.97. Four: $100.00 and $433.30. Five or six: $95.00 and $411.64. Seven or more: $90.00 and $389.97. The monthly figures are the adjusted weekly amount times 4.333, rounded to the cent. $105.00 × 4.333 is $454.965, which rounds to $454.97. $95.00 × 4.333 is $411.635, which rounds to $411.64. These six lines exist so each branch of the footnote can be seen. They are not food costs.

When to use this

Use it when you want the household-size footnote applied to weekly costs you just copied, and when you want your own spending set next to that result. It is the money question, not the menu question. The weekly meal planner adds calories and grams you type. The grocery list generator scales and merges ingredient lines. The protein cost calculator divides a package price by protein grams. None of those pages apply the USDA size percents. This page does not build a shopping list and does not rank foods.

Use the official report when the question is "what does USDA print this month?" Use this page when the question is "I have pasted these weekly cells, including a household that is not four people; what do the two footnote steps produce?" A family of four using the reference-family row can read $236.30 and $1,023.70 straight off the August 2026 illustration and skip this page. A household of two, three, five, or seven cannot read a single adjusted cell for an arbitrary mix of ages, because the printed reference family is one specific group of four. That is the case this form is for.

It is the wrong tool for a SNAP allotment. USDA notes that the reference family of four is used in setting the maximum SNAP allotment, and that the allotment is then adjusted for other household sizes under the program's rules. Those rules are not the food-plan cost percents. This page will not estimate a benefit, a deduction, or an eligibility result. It is also the wrong tool for a clinical food budget. A prescribed diet is a clinician's instruction. A national market-basket price is not that instruction.

Common mistakes

Pasting the monthly column into the weekly boxes. The form asks for weekly costs, then multiplies by 4.333. A monthly figure pasted as if it were weekly is multiplied again. If the report in front of you shows only a monthly number, do not divide it by 4.333 on a scrap of paper and assume you have recovered USDA's weekly cell. The August 2026 woman row is the demonstration: the printed month is $253.70 and the weekly cell times 4.333 is $253.48. Use the weekly column when the report has one.

Treating the illustration as this month's price. The load button is labeled August 2026 because that is the report that was current on the page dated September 24, 2026, and read here on October 2, 2026. The button does not fetch a new file. If USDA has posted a later month, the button is a stale example on purpose, so the arithmetic on this page can still be audited. Copy the later month yourself.

Setting household size to 4 while only two costs are filled in, or the reverse. The footnote's first step is a sum of every member. The second step is the percent for the size of that household. If you enter two people and leave the size at 4, you get a two-person sum with a four-person percent, which is neither the two-person example nor the four-person example. The warning flags the mismatch. It still calculates, because you may be entering a subtotal on purpose. Read the warning before you use the number.

Comparing a receipt that includes restaurants, pet food, or paper goods with a plan that prices food and beverages prepared at home. The difference will move, and the page will not know why. Type the spending figure that matches the question you are asking. The unit price calculator is the tool for one package on a shelf. This page is the tool for a weekly or monthly total you already added up.

Adding an extra Alaska or Hawaii uplift after pasting a cost that is already the Alaska or Hawaii cost. The size percent is the only percent in the script. The Anchorage and Hawaii reference-family months quoted above are not inputs unless you paste weekly costs from those reports yourself.

Limitations

No stored monthly table, no ZIP code, and no automatic update. The illustration constants live only in the button that fills the form. Clearing the form removes them. A later edit of this page would be required to change the illustration, and even then the button would remain an illustration. The calculation path for a normal visit is whatever is in the boxes.

The size adjustment is one percent for the whole sum, not a different percent per person. USDA's wording is to sum first and then apply one factor. A household of five with one infant and four adults uses minus 5 percent on the total, not a blend of percents. Age and sex matter only because they change which weekly cell you paste. This page does not check that the label "child 6–8" matches the dollars next to it.

Rounding is to the cent, half up on positive amounts, using the integer cent counts in the script. A bank that rounds half to even, or a spreadsheet that displays two decimals without rounding the same way, can differ by a cent on a product that lands on exactly half a cent. The $454.97 and $411.64 checks are the cases to compare. The page does not round to the nearest 10 cents the way the published USDA cells do.

The tool does not inflate a past report to today. If you paste an older month, the result is that older month plus the size percent. It does not apply a CPI on its own. USDA describes the monthly update as an index adjustment to the market baskets. That work is already inside the weekly cell you copy. Doing it again here would double the update.

Nothing on the page says a household should spend the plan amount, or that spending under the plan is healthier, or that spending over it is waste. Food prepared away from home, special diets, and local prices are outside the basket. The red box at the top applies here too: a food-cost footnote is not medical advice, including for anyone under 19 or pregnant. The age groups in the USDA table include children because the table prices food for them. Pasting a child's row is a cost step. It is not a meal plan for that child.

FAQ

Why isn't the USDA price table filled in for me?

The four plans change every month. A table stored on this page would go stale and would look like a current price. You copy the weekly cost for each person from the USDA Food Plans report you are using. This page adds those figures, applies the household-size percent, and multiplies the adjusted weekly total by 4.333.

What are the four USDA food plans?

USDA publishes the Thrifty, Low-Cost, Moderate-Cost, and Liberal Food Plans at successively higher cost levels. Each plan lists quantities of foods and beverages that could be purchased and prepared at home. The August 2026 report says another basis of the plans is that all meals and snacks are prepared at home. This calculator does not choose a plan for you. Paste the weekly costs from the plan column you decided to read.

Why is my grocery bill different from the plan?

The plan cost is a national average price for a defined market basket, updated with the Consumer Price Index, for food prepared at home. Your receipt can differ because of city, brand, waste, food eaten away from home, and household size. The comparison on this page is your typed spending minus the adjusted plan figure. It is not a judgment that one number is the right bill.

How do Alaska and Hawaii work here?

The August 2026 report prints separate Thrifty reference-family monthly costs for Anchorage and Hawaii. This page does not apply an extra Alaska or Hawaii percent, and it does not convert those monthly figures into weekly costs. If you use those reports, paste the weekly costs from the report you are reading. The linked USDA page is the place to check the current table.

Why can this page's monthly total differ from the monthly number printed on the USDA row?

USDA says costs are rounded to the nearest 10 cents and that monthly costs are weekly costs times 4.333. This tool multiplies the weekly dollars you paste, after the household adjustment, by 4.333 and rounds to the nearest cent. Adding the four already-rounded August 2026 Thrifty weekly cells for the reference family produces 236.20, while USDA's reference-family row prints 236.30 for the week and 1,023.70 for the month. Use the USDA report when you need the printed cell. Use this page when you want the sum and the size adjustment on the weekly figures you pasted.

Does this calculate a SNAP benefit?

No. USDA's footnote says the reference family of four is used in setting the maximum SNAP allotment, and that allotment is then adjusted by household size under the program's own rules. Those rules are not the plus 20, plus 10, plus 5, zero, minus 5, and minus 10 percents on this page. This page does not estimate a benefit.

Why don't you prefill a city or a ZIP code?

The USDA tables this tool is built around are U.S. average food-plan costs, plus separate Alaska and Hawaii Thrifty figures on that report. They are not a ZIP-code price survey. Store prices are whatever you type into Your spending.

Related calculators

• Protein Cost Calculator for one package's price divided by protein grams
• Grocery List Generator for ingredient lines, with optional prices you type per line
• Weekly Meal Planner for calories and grams, not for USDA prices
• Unit Price Calculator for price per unit of a single package
• Meal Prep Portion Calculator if you also type a batch cost and want cost per container
• TDEE Calculator if the next question is calories rather than dollars

Sources

Checked October 2, 2026. The August 2026 dollar figures quoted on this page are an illustration from that month's report. They are not live prices. Open the report again before you use a figure for a real budget.

• USDA Food Plans: Monthly Cost of Food Reports. Read October 2, 2026. The page then showed August 2026 tables and said it was updated September 24, 2026. Footnote text used here: costs are for individuals in 4-person households; for other sizes, add 20 percent for one person, add 10 percent for two, add 5 percent for three, no adjustment for four, subtract 5 percent for five or six, and subtract 10 percent for seven or more; sum each individual, then apply the household-size factor. Footnote on rounding: all costs are rounded to the nearest 10 cents, and monthly costs are weekly costs times 4.333. The Thrifty August 2026 weekly cells used in the illustration are woman 20–50 $58.50, man 20–50 $73.60, child 6–8 $48.30, and child 9–11 $55.80. The reference-family row prints $236.30 weekly and $1,023.70 monthly. Anchorage and Hawaii reference-family monthly costs on that page were $1,294.70 and $1,556.00. The introductory text describes four plans at successively higher cost levels, with foods and beverages that could be purchased and prepared at home.
• USDA FoodData Central is not a price source. It is linked from the protein cost page for nutrient lookups you do yourself. This budget page does not read it.