Welcome to the i-Tree Harvest Carbon Calculator!

The i-Tree Harvest Carbon Calculator (originally known as the PRESTO Wood Calculator) allows land managers and landowners to estimate the amount of carbon stored in harvested wood products. Carbon estimates are based on harvest volume, geographic region, and wood type.

Potential Applications

Including harvested wood products in carbon accounting and carbon credits, exploring the carbon impacts of changing the amounts of longer- and shorter-lived wood products for a given forest stand.


1) A Stand Details report that gives estimates of carbon storage in tonnes per hectare for total carbon storage after 100 years (C100) and average annual carbon storage (CAvg). Estimates are given for five different storage categories. 2) A 10- year report which shows carbon storage calculations in 10-year increments for each of the five storage categories. Calculations can be exported to Excel.


While i-Tree and its partners do not endorse any specific web-browser, i-Tree Harvest Carbon Calculator has been tested to work well with modern versions of Chrome, Firefox and Edge. Please, use the Feedback form to report issues.

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