Monthly Shopping List Cost Calculator

Work out monthly shopping list cost instantly with clear inputs, formula shown and shareable results.

About Monthly Shopping List Cost Calculator

Weeks do not divide evenly into months, so multiply weekly spending by 4.348 (52 divided by 12) rather than 4. Using 4 understates annual grocery spending by about 8% — several hundred pounds a year for a typical household.

Formula

Monthly grocery cost

monthly = weekly x 52 / 12 + monthly items; next year = monthly x (1 + inflation)

Worked example

With the default values below, Monthly Shopping List Cost Calculator returns Monthly total of $455.06. Change any input above and every figure here is recalculated in your browser.

Inputs used

Weekly grocery spend: 95
Monthly household and cleaning: 42
Annual grocery inflation: 4.5 %
People in the household: 3 people

Results

Monthly total: $455.06
Annual total: $5,460.72
Monthly cost per person: $151.69
Projected monthly cost next year: $475.54

Step by step

1Values used
2Monthly grocery cost
3Monthly total= 455.06
4Annual total= 5,460.72
5Monthly cost per person= 151.69
6Projected monthly cost next year= 475.54

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take tax or fees or charges into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why 4.348 and not 4?

A year has 52.18 weeks, so a month averages 4.348 weeks. Using 4 misses roughly four weeks of shopping across the year.

Is per-person cost a fair benchmark?

Roughly. Households of one spend more per head because of packaging and waste, so comparisons across household sizes need care.