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Home/Sustainability & Waste

Sustainability & Waste

Portioning Savings Calculator

Put a number on what over-portioning and plate waste cost you, and what correct portion control would save in euros and CO2 each year, dish by dish. CO2 figures are indicative and depend on the ingredient and region.

Updated: June 2026
No registration Instant calculation Data stays in browser

Results

Extra portion/dish30 g
Over-portion cost/year$1,260.00
Plate waste cost/year$470.40
Total annual saving$1,730.40
CO2 avoided/year543.84 kg CO2e

Extra g = served − standard. Over-portion = (extra g / 1000) × €/kg × covers. Plate waste = (served × leftover% / 1000) × €/kg × covers. Saving = over-portion + plate waste. Indicative values, they depend on source and geographic area.

150 persone trovano utile questo calcolatore

Portioning Savings Formula

Extra grams = Served grammage - Standard grammage

Over-portion / year = (Extra g / 1000) x Cost per kg x Covers

Plate waste / year = (Served g x Leftover % / 1000) x Cost per kg x Covers

Saving = Over-portion + Plate waste

The CO2 avoided is indicative and depends on the ingredient and its production source and region.

Example: A Pasta Dish

  • Served: 140g vs standard: 110g (30g over)
  • Ingredient cost: €3.50/kg, covers: 12,000/year, leftover: 8%
  • Over-portion: (30/1000) x 3.50 x 12,000 = €1,260 / year
  • Plate waste: (140 x 0.08/1000) x 3.50 x 12,000 = €470 / year
  • Total on this dish: ~€1,730 / year
Risposte rapide

Direct answers

What is over-portioning and why does it cost money?
Over-portioning is serving more than the dish's standard recipe specifies, for example plating 140g of pasta when the spec is 110g. Those extra grams cost real money on every plate. Multiplied across thousands of covers a year, a 30g overshoot on a single dish can quietly cost over a thousand euros, all of it pure margin lost before the customer even decides whether to finish the plate.
How do you calculate the cost of over-portioning?
Take the extra grams served above standard, convert to kilograms, multiply by the ingredient cost per kilogram, and multiply by the number of covers of that dish per year. The formula is (extra grams / 1000) x cost per kg x covers. The calculator runs this per dish so you can see which menu items leak the most margin through generous plating.
What is plate waste and how is it costed?
Plate waste is the food guests leave uneaten and that goes in the bin. It is estimated as the served weight times the average leftover percentage, converted to kilograms, times the ingredient cost, times covers. Larger portions tend to increase plate waste, so over-portioning and plate waste often compound each other, which is why the calculator adds both into the total saving.
How can I tighten portions without upsetting customers?
Use scales and standard portion tools during prep and service, write portion specs into recipe cards, and bring servings back to a tested standard rather than cutting them below it. The aim is to remove waste, not to short the guest. Because the saving is per dish and per cover, even modest, unnoticed corrections on a few high-volume items can add up to a substantial annual figure.
Is the CO2 saving included?
Yes, the calculator estimates the CO2 avoided alongside the euros, since less food produced and binned means lower emissions. That CO2 figure is indicative and depends on the ingredient and its production source and region, so use it for context rather than as a precise environmental claim.
Quick answers

Frequently Asked Questions

What is over-portioning and why does it cost money?

Over-portioning is serving more than the dish's standard recipe specifies, for example plating 140g of pasta when the spec is 110g. Those extra grams cost real money on every plate. Multiplied across thousands of covers a year, a 30g overshoot on a single dish can quietly cost over a thousand euros, all of it pure margin lost before the customer even decides whether to finish the plate.

How do you calculate the cost of over-portioning?

Take the extra grams served above standard, convert to kilograms, multiply by the ingredient cost per kilogram, and multiply by the number of covers of that dish per year. The formula is (extra grams / 1000) x cost per kg x covers. The calculator runs this per dish so you can see which menu items leak the most margin through generous plating.

What is plate waste and how is it costed?

Plate waste is the food guests leave uneaten and that goes in the bin. It is estimated as the served weight times the average leftover percentage, converted to kilograms, times the ingredient cost, times covers. Larger portions tend to increase plate waste, so over-portioning and plate waste often compound each other, which is why the calculator adds both into the total saving.

How can I tighten portions without upsetting customers?

Use scales and standard portion tools during prep and service, write portion specs into recipe cards, and bring servings back to a tested standard rather than cutting them below it. The aim is to remove waste, not to short the guest. Because the saving is per dish and per cover, even modest, unnoticed corrections on a few high-volume items can add up to a substantial annual figure.

Is the CO2 saving included?

Yes, the calculator estimates the CO2 avoided alongside the euros, since less food produced and binned means lower emissions. That CO2 figure is indicative and depends on the ingredient and its production source and region, so use it for context rather than as a precise environmental claim.

Italian version: Calcola risparmio porzionatura

Results

Extra portion/dish30 g
Over-portion cost/year$1,260.00
Plate waste cost/year$470.40
Total annual saving$1,730.40
CO2 avoided/year543.84 kg CO2e

Extra g = served − standard. Over-portion = (extra g / 1000) × €/kg × covers. Plate waste = (served × leftover% / 1000) × €/kg × covers. Saving = over-portion + plate waste. Indicative values, they depend on source and geographic area.

150 persone trovano utile questo calcolatore