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Free tool

Kitchen Waste & Yield Calculator

Stop losing money in your kitchen. Calculate the true cost of your ingredients after cleaning and peeling—free, no registration. Control your food cost down to the penny.

Waste

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Yield

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Real cost (€/kg net)

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Correction factor

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Lost to waste

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The real cost per net kg is what the usable part actually costs you. Pass it on to the menu price so you don't lose margin.

This calculator solves waste for one product; with Miselup, yield is factored into the recipe costing for your entire menu and the real cost per net kg updates itself. Create your account

See it inside

The real product, not a mockup

Explore the catalog, recipe costing, HACCP controls and traceability in Miselup.

  • Your business at a glance

    A dashboard with your activity, costs and alerts in one screen.

  • Ingredient catalogue

    1,200+ ingredients with cost, units and allergens.

  • Ingredient sheet

    Price per unit, allergens, conversions and supplier.

  • Sub-recipes

    Nested sub-recipes that recost themselves when a price changes.

  • Final preparations

    Dishes, drinks, desserts or trays: everything you sell, ready to cost.

  • Food-cost to the cent

    Cost, waste and margin of the final preparation in real time.

  • Export to professional PDF

    Technical sheet and food-cost ready to print or send.

  • Techniques

    Your library of techniques, with photos and steps.

  • Equipment & tableware

    Your production space's tools and equipment inventory.

  • Controls in the portal

    Configured controls, reading status and access to the form. Documentary records needing attachments are entered in management.

  • Measurement and corrective action

    Product core-temperature recording and corrective action for deviations; this recording type is available in Mise Pro HACCP.

Waste is the weight an ingredient loses when cleaned (skins, bones, pin bones). Yield is the actual usable percentage that remains. If you buy 10 kg of whole hake, you'll only get around 5 kg net. Without tracking this difference, your recipe costing is meaningless and your margin per item evaporates. An error of just 5% in your waste calculation can push your food cost up by as much as 3 percentage points by the end of the month.

The real cost per net kg is what you actually pay for the edible part. If waste is high, the correction factor (1/yield) tells you how much to multiply the purchase price by to pass it on to the final preparation. For example, with a 50% yield, your cost doubles. If you spot excessive waste, negotiate with your supplier, switch to a cleaner buying format (ready-cooked/fifth-range) or review your kitchen's portioning technique.

How to use it

How to use the calculator

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1. Enter the purchase price

Enter the price in €/kg (gross) you paid your supplier.

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2. Weigh the item gross and net

Weigh the product as it arrives (gross), then just the clean, usable part (net).

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3. Read the results instantly

Get the waste %, yield, real cost per net kg, correction factor and the exact money you’re losing on that purchase.

Benchmarks

Waste benchmarks by product

Whole hake: 45-55% waste

After removing head, guts and central pin bone, net yield is around 45-55%. The usable part is clean fillets.

Potatoes for peeling: 15-20% waste

Skin and eyes make up an average loss of 20%. Net yield is 80-85%.

Whole beef tenderloin: 15-25% waste

After trimming off the chain, side muscle and surface fat from the whole piece, yield lands between 75% and 85%. An already semi-trimmed center cut loses only 8-12%.

Iceberg lettuce: 25-30% waste

Damaged outer leaves and the central core account for a considerable loss. Net yield of 70-75%.

FAQ

Frequently asked questions

Kitchen Waste & Yield Calculator

How do you calculate waste percentage?
Subtract the net weight from the gross weight, divide the result by the gross weight and multiply by 100. If you get 6 kg net from 10 kg gross, your waste is 40%.
What is the correction factor and what's it for?
It's the multiplier to pass the waste cost on to the price. It's calculated as 1 divided by the yield expressed as a decimal. If the yield is 0.6, the factor is 1.67. Multiply your purchase price by this factor to get the true cost.
Why is my real cost per net kg higher than the purchase price?
Because you're also paying for the part you throw away. If you buy at €10/kg with 50% waste, the real cost of the usable kg is €20. The calculator shows you this instantly so you can adjust your selling price.
What should I do if a product's waste is too high?
Check three things: your team's butchery technique, the supplier's quality, and the option of buying the product in a cleaner format (fillets, steaks or pre-prepped/fourth-range). A 10% waste difference can justify switching formats.
Does this calculator work for any type of food?
Yes, it works for meat, fish, vegetables and fruit. You just need the weight before and after cleaning. It's just as useful for a whole hake as a sack of onions.
Related

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