Ingredient Purchase Quantity Calculator
Calculate raw ingredient purchase kilograms from edible quantity, measured preparation yield and allowance.
Your results
Calculation breakdown
- Purchase quantity
- required edible mass ÷ preparation yield × (1 + purchasing allowance)
Worked example
To obtain 30 kg edible at 80% preparation yield needs 37.5 kg raw before allowance or 39.38 kg with a 5% purchasing allowance.
Assumptions
- Preparation yield applies to the purchased raw product.
- The allowance is added after yield recovery is calculated.
Sources
Rates effective 23 August 2026.
How this calculator works
Calculate raw ingredient kilograms to purchase for a required edible quantity after preparation yield and a selected purchasing allowance. Yield recovery and contingency remain separate so the order is not inflated by an unexplained combined factor. Inputs and intermediate values stay visible so an Australian club, venue or food team can reproduce the estimate and replace assumptions with measured operating data.
Frequently asked questions
Which inputs matter most for the ingredient purchase quantity result?
Use a measured edible yield for the specific ingredient and preparation standard plus a justified event or supply allowance. Keep the measurement period and definitions consistent when comparing results.
What is not captured by this ingredient purchase quantity calculation?
Supplier pack sizes, minimum orders, shelf life, existing stock, cooking yield and product variability require separate review. Treat the output as one planning measure rather than a complete operating decision.
When should the ingredient purchase quantity estimate be recalculated?
Recalculate when quantities, participants, rules, equipment, packaging or operating conditions change. For this topic, use a measured edible yield for the specific ingredient and preparation standard plus a justified event or supply allowance.