Food Waste Calculator
Enter the amount purchased, the amount wasted, and your own cost per unit. The calculator reports the wasted share and the corresponding cost.
A QUICK WALKTHROUGH
How to use this tool
- Enter the purchased amount in one unit, such as kg or lb.
- Enter the wasted amount in the same unit and your cost per unit.
- Calculate to see the waste percentage and cost.
User-entered quantities
This calculator uses only the amounts and cost you enter. It does not supply food prices, portions, disposal rates, or environmental impact factors.
Keep units consistent
Use the same unit for purchased and wasted amounts. The cost is a simple estimate: wasted amount × your cost per unit.
GOOD TO KNOW
Common questions
What does the waste percentage mean?
It is wasted amount divided by purchased amount, multiplied by 100.
Does it estimate carbon, water, or landfill impact?
No. It reports quantity and cost only; no environmental factor is assumed.