Explore different visions of the future from the Calculator team, other models and other organisations.
The online Global Calculator tool puts you in charge of the world's energy, land and food system from now until 2050 through 40 "levers", each controlling one option for reducing greenhouse gas emissions. Each time you click on a lever you will instantly see the impact of the change you have made.
This section has more information about how the Calculator works and what you can use it for. Our "how to" video also gives a quick overview of how you use the Calculator.