Grocery Budget Calculator
Estimate a weekly, monthly and yearly grocery budget for adults, younger children and household items, using your own spending figures.
Example amounts only — replace them with figures from your own receipts or bank statements.
Cleaning products, toiletries, nappies or pet food you buy at the supermarket.
Your results
Weekly budget breakdown
| Item | Weekly |
|---|---|
| Adults and teenagers (2) | $240.00 |
| Younger children (2) | $140.00 |
| Household items | $25.00 |
Calculation breakdown
- Weekly budget
- adults × adult spend + children × child spend + household items
- Monthly average
- weekly budget × 52 ÷ 12
Worked example
Two adults at $120 a week, two younger children at $70 and $25 of household items gives $405 a week, $810 a fortnight, about $1,755 a month or $21,060 a year.
Assumptions
- Excludes dining out, takeaway and alcohol bought separately.
- The default amounts are examples, not Australian averages — use your own spending records.
- Monthly figures use 52 weeks ÷ 12 months.
How this calculator works
Enter the adults and younger children in your household, what each typically costs to feed each week and any household items bought with the groceries to estimate your weekly, fortnightly, monthly and yearly grocery budget.
Set a grocery budget from your own household
Grocery costs vary widely with age, diet, location and shopping habits, so the default figures are examples only. The most reliable starting point is to add up four weeks of supermarket receipts or bank transactions and divide by four.
The calculator lets you enter adults and teenagers separately from younger children, and adds household items such as cleaning products, toiletries, nappies or pet food that are often bought with the groceries.
Weekly, monthly and yearly figures
The monthly figure uses 52 weeks divided by 12 months, so it is slightly more than four times the weekly amount. Use the fortnightly or monthly figure that matches when you are paid or when your bills are due.
Track actual spending against the budget for a few weeks before adjusting it. Comparing unit prices on shelf labels and planning meals around what you already have are practical ways to keep the weekly total on target.
Official sources and assumptions
Check the official or authoritative references used to review this calculator's rates, formulas and assumptions.
Frequently asked questions
What's a typical grocery spend per person?
It varies widely with age, diet, location and shopping habits, so the most reliable figure is your own. Add up four weeks of supermarket receipts or bank transactions and divide by four.
Does this include takeaway or dining out?
No, this covers grocery shopping only; add dining-out costs separately in a household budget calculator.
How can I reduce my grocery spend?
Plan meals around what you already have, compare unit prices on shelf labels, and set the weekly budget here as a target you track against your actual spending.
Content responsibility
Maintained by CalcAussie and last updated 15 October 2026. Checks applied: calculation method, worked examples, Australian terminology, material assumptions, official references where an external rule applies, and user-facing limitations.
Calculator results remain estimates based on the figures entered. Check material decisions against current official information and report a suspected error so it can be reproduced and corrected.
Results are estimates only and are not financial, tax, legal or credit advice.