Shopping
Weekly grocery budget
Household size multiplied by the weekly cost of feeding one person.
The Formula
W = n x s
Household size multiplied by the weekly cost of feeding one person.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| W | Weekly budget | USD/week | The grocery spend for the whole household. |
| n | Household size | people | The number of people being fed. |
| s | Spend per person | USD/person/week | The cost of one person's food for one week. |
What Each Symbol Means
WUSD/week
Weekly budget
The grocery spend for the whole household.
npeople
Household size
The number of people being fed.
sUSD/person/week
Spend per person
The cost of one person's food for one week.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate a grocery budget page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate A Grocery Budget, filed under Everyday Life. Every number the guide produces comes from substituting into this one line.