A little less mental math
Grocery Budget Calculator: Weekly & Monthly
Turn a grocery budget into a practical daily target. Choose your household size, the days it needs to cover, and the amount you want to keep aside.
No account required. Your budget entries stay in this browser; this tool does not upload or store them.
How much of your budget is available for groceries?
Start with an amount you have chosen for the period. The calculator removes your buffer, divides the rest by the number of days, and then divides that daily amount by the household size. The result is an average spending target, not a suggested amount anyone should eat.
Planned grocery budget = total budget × (1 − buffer percentage ÷ 100). A buffer is optional: choose 0% to allocate everything. The starting 10% is an editable example, not a requirement. Currency selection only changes the label and formatting; it does not convert exchange rates.
Example: €100 for two people over seven days
With a 10% buffer, keep €10 aside and plan €90 of purchases. That leaves about €12.86 per day for the household, or €6.43 per person per day. These numbers describe the example budget only; they are not claims about what groceries cost in your country.
| Buffer | Planned purchases | Household per day |
|---|---|---|
| 0% | €100.00 | €14.29 |
| 10% | €90.00 | €12.86 |
| 20% | €80.00 | €11.43 |
Rounding happens for display, so daily figures multiplied back up can differ by a few cents. Use the planned-purchases total when comparing with your basket.
How to handle a monthly grocery budget
For an actual calendar month, enter its number of days. Do not assume every month is exactly four weeks: four weeks is 28 days, leaving extra days in most months. If you need a rough year-round conversion, a weekly budget multiplied by 52 and divided by 12 gives a monthly planning average. Use your actual shopping dates when cash flow matters.
Decide what the budget covers before calculating. Food only, food plus household products, and dinners only are three different budgets. Do not compare a dinner plan with a whole-household grocery bill and assume the difference is waste. Breakfasts, lunches, snacks, pantry restocking, and non-food purchases may explain it.
Use the result before the shop
- Check the fridge, freezer, and cupboard. Build meals around what is already available.
- List the remaining ingredients and the packs you will actually buy. A recipe using half a packet may still require buying the whole packet.
- Use current prices from your own shop or recent receipts. Keep substitutions visible.
- Compare the basket with the planned-purchases total. Revise expensive meals or quantities before checkout.
- After shopping, record the actual total and use it to improve the next estimate.
The free pantry-first meal planning template gives you a practical starting sheet. Our grocery budget guide explains how to work with estimates, and Soti connects meal planning and shopping lists on iPhone.
By Soldra · Published . Editorial policy and corrections.