Grocery Budget Calculator
Enter weekly or monthly grocery spend to see weekly, monthly, and annual costs — plus per-person share and target comparison.
Inputs
Result
Visual breakdown
Formula
Monthly = weekly × 52 ÷ 12. Annual = monthly × 12. Per person = monthly ÷ household size. Target delta = monthly − target.
Example
$180/week for 2 → about $780/month and $9,360/year.
Related: Monthly budget · Runway · Meal cost
How to use
- Use your real average — pull 3–4 weeks of receipts or card statements.
- Try a target to see if your current spending fits your monthly budget.
- Compare per-person numbers across households as a sanity check.
When it's useful
- Setting a monthly food budget.
- Reviewing how groceries fit into total expenses.
- Planning for a household-size change.
Common examples
Frequently asked
Should I include household items like cleaning products?
Up to you. Most people keep them separate; if you put them under groceries, keep that consistent every month.
Why does monthly differ from weekly × 4?
There are about 4.33 weeks per month, not 4. We use weekly × 52 ÷ 12 for a more accurate monthly figure.
Does this include restaurants and takeout?
No — those belong in a dining-out line. Use the Restaurant vs Home calculator to compare them.
How is the per-person figure calculated?
Monthly cost ÷ household size. It's a rough share, not a fair per-eater split (children typically cost less).