Free tree carbon sequestration calculator. Estimate how much carbon dioxide trees absorb per year based on species, age, and location. Plan tree planting for carbon offsets with EPA/USDA data.
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Trees are powerful carbon sinks—but how much CO₂ do they actually absorb? Our Tree Carbon Sequestration Calculator estimates annual carbon capture based on species, tree age, climate zone, and growing conditions. Whether you're planning backyard plantings, urban forestry projects, or large-scale reforestation, get accurate projections backed by EPA and USDA Forest Service data.
Carbon sequestration is the process by which trees absorb CO₂ from the atmosphere and store it as carbon in their biomass (trunk, branches, roots, and leaves). Trees use photosynthesis to convert CO₂ into oxygen and carbon compounds. A mature tree absorbs approximately 48 pounds (21.77 kg) of CO₂ per year on average. The amount varies significantly by species, age, size, climate, and growing conditions. Young trees absorb less carbon than mature trees, and fast-growing species sequester more carbon in their early years.
Sequestration Formula
Annual CO₂ = Base Rate × Age Multiplier × Climate Factor × Setting FactorEstimate the carbon offset potential of proposed tree plantings for homes, parks, or large-scale reforestation.
Calculate how many trees you need to plant to offset personal, household, or organizational carbon footprints.
Understand which species provide the greatest carbon sequestration for your climate and available space.
Uses EPA greenhouse gas equivalencies and USDA Forest Service carbon storage data for accurate estimates.
Estimate carbon benefits from backyard trees and plan climate-friendly landscaping.
Quantify carbon offsets from urban tree programs and green infrastructure investments.
Calculate sequestration potential for reforestation projects and conservation programs.
Teach students about carbon cycles, climate change, and the value of trees with real data.
An average mature tree absorbs about 48 lbs (21.77 kg) of CO₂ per year, according to EPA data. However, this varies widely by species—fast-growing species like poplar or eucalyptus can absorb 30-50 kg/year, while slower-growing oaks may absorb 15-25 kg/year. Young trees absorb less, while large mature trees absorb more.