How Much Could You Save by Wasting Less Food?
The USDA estimates US households waste 30–40% of their food, costing the average family around $1,500/year. For a household spending $800/month on groceries with a 30% waste rate, that's $240/month — $2,880/year — thrown away. Cutting waste by just 50% would save $1,440/year while also reducing your carbon footprint. The greenhouse gas impact is significant: food decomposing in landfills generates about 2.5 kg of CO2-equivalent per kg of food, making food waste one of the highest-impact areas for individual climate action.
To estimate your waste rate, track what you throw away for two weeks relative to what you bought. Common culprits are produce that wilts before use, leftovers forgotten at the back of the fridge, and bulk purchases that expire. Meal planning before shopping, weekly fridge audits, and prompt freezing of leftovers are the three habits with the largest impact.
Frequently Asked Questions
Track everything you throw away over 2 weeks and estimate its purchase value. Divide by 2 weeks of grocery spending and multiply by 100. If that feels too tedious, start with the USDA average of 30% as a baseline.
This calculator covers grocery/home food spending only. To include restaurant meals, add your monthly dining budget to the grocery amount if you routinely leave large portions uneaten.