Purchasing & Inventory
Purchase Price Variance Calculator
Calculate purchase price variance for hotel and restaurant operations.
Waste Percentage Calculator
Use this tool to review waste percentage with a consistent period, denominator, and operating rule.
- No login required
- Save in this browser
- Optional account sync
- Built for hotel operators
Formula
How this calculator works
This formula converts source operating values into waste percentage for quick review.
Waste % = (Waste Cost ÷ COGS or Purchases) × 100
Context
Why this metric matters
State whether denominator is COGS, purchases, or food sales. Food-waste only and total-waste metrics should be separated.
Hotel insight
Industry context
- State whether denominator is COGS, purchases, or food sales. Food-waste only and total-waste metrics should be separated.
- Small changes in denominator rules can move the result, so keep the same reporting basis when comparing periods.
Operational notes
Before you act on the number
- $1,500 waste cost ÷ $20,000 COGS × 100 = 7.5%
- Confirm whether internal-use, complimentary, adjustment, or excluded activity should be included before comparing periods.
- Use this result as an operating guide and review it with the supporting business context.