Earth Overshoot Day falls on July 29

Earth Overshoot Day marks the date when humanity’s demand for ecological resources and services in a given year exceeds what Earth can regenerate in that year.
In 2021, it falls on July 29.

To determine the date of Earth Overshoot Day 2021, Global Footprint Network combined the most reliable data and formed the most reasonable assumptions to assess humanity’s resource situation.

Changes in carbon emissions, forest biocapacity and other factors that could impact global biocapacity or the Ecological Footprint from January 1 to Earth Overshoot Day 2021 were evaluated. The main drivers were the carbon Footprint (increased 6.6% from 2021) and a decrease in global forest biocapacity (reduced 0.5% from 2021).

For more details, check out the downloadable research report explaining how the date of Earth Overshoot Day was calculated.

Councillor Susan Aitken, Leader of Glasgow City Council, announces the date of Earth Overshoot Day 2021.

Explore Solutions to #MoveTheDate

Thriving lives within the means of our planet are not out of reach. Plenty of solutions exist in five major areas
for improving sustainability: planet, cities, energy, food, and population.


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How we help nature thrive

Humanity’s quality of life is dependent on the health of our planet’s biological resources including fertile soil, clean water, and clean air necessary for humanity to thrive. Learn More


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How we design and manage cities

Eighty percent of the world population is expected to live in cities by 2050. City planning and urban development strategies are instrumental to balancing the supply of natural capital and population’s demand. Learn More


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How we power ourselves

Decarbonizing the economy is our best possible chance to address climate change, and would improve the balance between our Ecological Footprint and the planet’s renewable natural resources. Learn More


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How we produce, distribute, and consume food

How we meet one of our most basic needs–food–is a powerful way to influence sustainability. Sourcing food locally and avoiding highly processed foods can lower the Ecological Footprint. Learn More


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How many of us there are

Being committed to everyone living secure lives in a world of finite resources requires addressing population growth. Empowering women is essential for global sustainability. Learn More

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Earth Overshoot Day By the Numbers

million years ago life first evident on Earth
increase in world population since 1970
decline in average population size of vertebrate species since 1970
of humanity’s Ecological Footprint is carbon

blue Global Footprint Network logo

Earth Overshoot Day is an initiative of Global Footprint Network, an international research organization that is changing the way the world measures and manages its natural resources. The date of Earth Overshoot Day is calculated with data from Global Footprint Network’s National Footprint and Biocapacity Accounts, available for free at