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One billion meals a day: what the UNEP food waste study really tells us

The global numbers are difficult to picture. Their most useful lesson is that household food waste is ordinary, widespread—and changeable.

Still Good••8 min read

In 2024, the UN Environment Programme and WRAP published the most comprehensive global assessment of consumer-level food waste to date. Its headline travelled quickly: households waste the equivalent of more than one billion meals every day.

That sentence can provoke guilt, but guilt is not a household strategy. It is more useful to understand what the report measured, what it did not, and what its findings suggest we can do at home.

The scale of the finding

The Food Waste Index Report 2024 estimated that 1.05 billion tonnes of food waste were generated in 2022 across households, food service and retail. That was about 19% of food available to consumers. Households accounted for 60% of the total—631 million tonnes.

UNEP estimated average household waste at 79 kilograms per person per year. The often-quoted “one billion meals” figure is a conservative illustration of the edible share of that waste, not a count of plates observed in kitchens.

Food waste is not only a rich-country problem

One of the report’s important findings is that observed household waste levels across high-, upper-middle- and lower-middle-income countries differed by only seven kilograms per person per year. Data quality still varies, but the evidence challenges the idea that food waste belongs to one culture or income group.

That matters because solutions should not begin with stereotypes. Storage infrastructure, climate, shopping patterns, household size and local food systems all shape what gets wasted.

Why household waste has an outsized impact

Food carries the footprint of land, water, energy, transport and refrigeration before it reaches a kitchen. UNEP reports that food loss and waste contributes an estimated 8–10% of global greenhouse-gas emissions. Preventing waste avoids more impact than dealing with it after disposal.

What the report means in an ordinary kitchen

The study does not say every household must weigh its bin. It does show that measurement and coordinated action work. For a household, “measurement” can be very light:

  • notice which three foods you discard most often;
  • track the value or number of products wasted for one month;
  • identify the cause—forgotten, overbought, badly stored or plans changed;
  • change one part of the routine and check again.
Start with visibility. A forgotten product cannot become dinner. A short list of what expires soon is often more useful than a perfect record of everything you own.

Four changes worth trying

  1. Check before shopping. Make existing food the first input to your list.
  2. Plan flexible meals. Leave room for leftovers and changing schedules.
  3. Make urgency visible. Use an eat-first shelf or expiry reminders.
  4. Freeze earlier. Do it while food is still something you want to eat.

The report’s hopeful finding is not hidden in a single statistic. Partnerships in several countries have already reduced food waste, and households are part of that progress. The scale is global, but the useful unit of action can still be tonight’s fridge.

Sources

UNEP Food Waste Index Report 2024
UNEP report summary and key findings