More in Daily Frugality
What this calculator does
If you can cook from what you already have, the meal cost is the opportunity cost of not buying fast food.
The math
Savings = comparable fast food cost. Pantry ingredient cost is treated as $0 because they are already owned.
Worked example
A $12 fast food meal replaced by pantry food saves $12.
Why this matters
Small daily habits are the easiest to change and the fastest to compound. This calculator shows the real savings from one swap.
Methodology and transparency
This page publishes the exact formula used to compute the result, so you can verify it in a spreadsheet or check the assumptions against your own situation. The worked example uses the tool default inputs; change any number and the result updates live in your browser. No data is sent or stored.
Common questions
Are pantry ingredients really free?
No, but you already bought them. The calculator shows the marginal savings of using them instead of ordering out.
What about time?
Cooking takes time. This calculator only compares direct food costs.