IdleForest models one hour of League of Legends use at about 120g of CO2.
League of Legends players contribute to digital emissions through complex GPU rendering and the global server network powering million of matches simultaneously.
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Calculation proof
Annual footprint formula
120g CO2e/hour x 2.5h/day x 365 / 1000 = 109.5kg CO2e/year
Tree offset formula
ceil(109.5kg CO2e / 20 kg CO2e per tree-year) = 6 rounded up
Source basis: This estimate combines the app's modeled hourly footprint, usage assumption, methodology notes, and linked research sources. It is directional and should be read as a transparent consumer estimate, not a vendor emissions disclosure.
Uncertainty note: Gaming footprints can swing sharply depending on GPU load, device age, resolution, and whether play happens offline or online.
*IdleForest offsets ~200kg CO2/year on average per user.
Estimate review
Reviewed by: IdleForest Research Team
Role: Editorial Review
Organization: IdleForest
Last reviewed: May 10, 2026
These estimates are meant to help compare digital habits. They are directional, not exact reproductions of proprietary vendor accounting.
Helpful for understanding how device choice and gaming load change electricity use.
Provides broader context on the infrastructure behind cloud and network energy use.
Supports the offset conversion used by IdleForest: roughly 20kg CO2 absorbed per mature tree per year, with wide real-world variation.
The cost depends on your PC hardware. PC gaming is generally more energy-intensive than mobile or console gaming.
Browse the main carbon footprint guide and jump to the pages that best match your digital habits.
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IdleForest is a desktop app that plants trees in the background while your computer is idle. It uses your unused internet bandwidth to fund reforestation projects.
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