A new report has discovered that there are just over three trillion trees on Earth.
This figure is eight times bigger than the previous best guess, which counted perhaps 400 billion trees at most.
The new total of 3,040,000,000,000 trees can be thought of as roughly 420 trees for every person on the planet.
A team from Yale University in America performed the research and collected information from over 400,000 forest plots around the world.
The new number will now help with a wide range of research including studies that look at animal and plant habitats to climate issues. The study clearly shows the influence humans now have on the number of trees on Earth.
The team estimates we are removing about 15 billion trees a year, with only five billion being planted back to replace them.