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[image:] Since the initial release of i-Tree Tools in August 2006, it has been used in more than 100 countries to report on individual trees, parcels, neighborhoods, cities, and even entire states. Graphic show the i-Tree logo.i-Tree is a state-of-the-art, peer-reviewed software suite that provides urban and community forestry analysis and benefits assessment tools.

Worldwide, approximately 15,000 copies of the i-Tree software suite have been downloaded since the free software suite was launched. Of that total, 7,699 copies have been downloaded in the United States.  Today international users make up the fastest growing segment of i-Tree users. In addition, there have been more than 10,000 users of new i-Tree web tools.

i-Tree partnerships have developed analysis tools including:

  • i-Tree Eco, providing a broad picture of any area in the entire urban forest.
  • i-Tree Streets, focusing on the benefits provided by street trees.
  • i-Tree Hydro, simulating how changes in tree and impervious cover affect stream flow and water quality.
  • i-Tree Vue, broadly assessing services derived from a community's land cover.
  • i-Tree Design, allowing homeowners to see how tree selection, tree size, and placement around a home affect energy use and other benefits.
  • i-Tree Canopy, offering a quick and easy way to produce a statistically valid estimate of land cover types such as tree cover.

Utility programs include:  i-Tree Species, which helps land owners select the best tree species for environmental services, i-Tree Pest Detection Module, which is a portable, accessible and standardized protocol for observing a tree for possible insect or disease problems, and i-Tree Storm, which provides a method for a community to assess widespread storm damage.


The Forest Service has partnered with many organizations to make this project a success.

Acres of Forest Affected

100 million acres of urban and community
forests in the United States

Scientists who update the software and
present training, plus supporting staff
Annual Forest Service Budget for i-Tree:



To date, the i-Tree partnership has:

  • Created tools that are aiding in assessment of tree cover and associated ecosystem services and values on a local to national level.
  • Made it economically feasible for communities and urban forest managers to analyze the extent and values of their trees and tree canopy.
  • Provided training in multiple cities in the United States.
  • Made i-Tree Tools available in the public domain and freely accessible.
  • Adjusted models for use in Canada and Australia.
  • Provided free technical support Monday-Friday during business hours.
  • Created a mobile data collection system that is available in i-Tree Streets and Eco v5.0 and is designed to work with newer web-enabled mobile devices..


Since the initial release of the i-Tree Tools in August 2006, communities, non-profit organizations, consultants, volunteers and students in more than 100 countries have used i-Tree to report on individual trees, parcels, neighborhoods, cities, and even entire states. By understanding the local, tangible ecosystem services that trees provide, i-Tree users can link urban forest management activities with environmental quality and community livability. i-Tree provides baseline data that is being used to demonstrate value and set priorities for more effective decision-making.

Lessons Learned

More than 80 percent of the U.S. population lives in urban areas, and urban natural resources are crucial to health and livability in cities and suburbs. The free, downloadable tools included in the i-Tree suite are helping communities of all sizes strengthen urban forest management and advocacy efforts by quantifying the environmental services that trees provide and the structure of the urban forest. i-Tree partners each contribute expertise that has resulted in software and tools that respond to urban forestry needs in the United States and internationally.     

[image:] Davy Tree Expert Company logo. 

““i-Tree has fundamentally changed the way we understand and manage our community trees. Not only does it help us ‘see the forest for the trees’ to improve management, but it fosters local community stewardship through better understanding of the benefits and services trees provide.”
--Scott Maco, The Davey Tree Expert Company

Partner Organizations

Last Modified: July 31, 2019