Use this calculator for a quick management estimate of period food cost. The math runs in your browser; the values you enter are not submitted to Thomas Monroe Books.
Calculate actual food cost
Formula used
Actual food cost % = COGS ÷ Food sales × 100.
The optional theoretical percentage lets the calculator estimate the percentage-point and dollar gap between what the restaurant expected food to cost and what it actually cost. It does not identify the cause of the variance.
What the result should trigger
If actual cost is unfavorable, verify the inputs before acting. Recheck inventory, invoices and credits, high-dollar purchase changes, waste, portions, recipe costs, transfers, and expected-versus-actual usage. A calculator can quantify the gap; a manager still has to explain it.
Keep the periods consistent
Beginning inventory, purchases, ending inventory, and food sales should cover the same period. If your accounting system handles transfers or other adjustments separately, apply the restaurant’s approved treatment consistently before comparing one period with another.
Related guides
- Food cost percentage formula and worked example
- Actual vs. theoretical food cost
- Inventory and waste control
- Recipe costing
Put the guide into a working system
Use this guide as the learning layer, then move into the Gravity Food Cost, Inventory & Purchasing System and the Food Cost, Waste & Inventory Control Workbook when you need controlled forms, recurring review, and manager follow-through.