Humans waste roughly 1.05 billion tonnes of food every year at the retail, food service, and household level alone. That figure, from UNEP’s 2024 Food Waste Index Report covering 2022 data, represents about 19% of all food available to consumers. On top of that, another 13% of the world’s food is lost earlier in the supply chain, between harvest and the point of sale. Combined, about a third of all food produced for people never gets eaten.
Where the Waste Happens
Most food waste doesn’t come from restaurants or grocery stores. It comes from your kitchen. Households account for roughly 61% of all food wasted at the consumer level. Food service operations like restaurants, cafeterias, and catering make up about 26%, and retail outlets contribute the remaining 13%.
On a personal scale, the global average works out to about 121 kilograms (267 pounds) per person per year. That’s roughly a third of a kilogram tossed out every single day per person on the planet, counting waste across retail, food service, and home kitchens combined.
The Financial Cost
All that wasted food carries a price tag of at least $1 trillion annually worldwide. That number reflects the direct cost of food purchased and never consumed, but it understates the true economic damage. The resources poured into growing, transporting, refrigerating, and packaging that food are also lost. In the United States alone, wasted food consumes enough water and energy to supply more than 50 million homes, and it uses an area of agricultural land equivalent to the states of California and New York combined.
Environmental Damage
Food waste is one of the largest contributors to climate change that most people never think about. When uneaten food ends up in landfills, it decomposes and releases methane, a greenhouse gas far more potent than carbon dioxide over the short term. Globally, food loss and waste generate 8 to 10% of all greenhouse gas emissions. To put that in perspective, that’s nearly five times the total emissions from the entire aviation industry.
The environmental toll goes beyond the landfill. Growing food that nobody eats uses almost a third of the world’s agricultural land. That means forests cleared, water drawn from rivers and aquifers, and fertilizers applied to soil, all for food that rots in a bin. The U.S. EPA estimates that American food waste alone produces emissions equivalent to running more than 42 coal-fired power plants.
What Gets Wasted Most
Fruits and vegetables are the most commonly wasted food category worldwide, largely because they spoil quickly. Bread and bakery products, dairy, and cooked leftovers round out the top categories in most household studies. Much of this waste stems from buying more than a household can eat before it goes bad, confusion over “best by” and “use by” dates, and the tendency to prepare larger portions than needed.
How Waste Varies by Region
Food waste is not equally distributed around the world, but the pattern may not be what you’d expect. While high-income countries tend to generate more total municipal waste per person, food waste at the household level is surprisingly consistent across income levels. The UNEP Food Waste Index found that per capita household food waste doesn’t vary dramatically between wealthy and developing nations. People in lower-income countries waste food too, often because of inadequate storage, unreliable refrigeration, or the need to prepare food from scratch daily, which leads to spoilage and excess.
The difference lies more in where the waste occurs. In wealthier countries, most food is lost at the consumer end: people buy too much, ignore leftovers, or throw out food that’s cosmetically imperfect but still safe. In lower-income countries, a larger share of loss happens earlier in the supply chain, during harvesting, storage, and transportation, where infrastructure gaps cause crops to spoil before they ever reach a kitchen.
Why It Matters Beyond the Numbers
Around 783 million people worldwide face chronic hunger. The 1.05 billion tonnes of food wasted each year at the consumer level alone would be more than enough to feed every one of them. Reducing food waste by even a fraction could redirect enormous quantities of edible food to people who need it, while simultaneously cutting greenhouse emissions and easing pressure on farmland and freshwater supplies.
At the household level, the most effective steps are straightforward: planning meals before shopping, storing perishables properly, using older items first, and learning that “best by” dates indicate peak quality rather than safety cutoffs. These small changes, multiplied across billions of households, represent one of the most accessible ways to reduce both personal spending and environmental harm.