Trees Saved Formula:
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Definition: This calculator estimates the number of trees saved through paper recycling based on pages used, recycling rate, and pages produced per tree.
Purpose: It helps individuals and organizations understand the environmental impact of their paper usage and recycling efforts.
The calculator uses the formula:
Where:
Explanation: The number of pages used is multiplied by the recycling rate to get effective recycled pages, then divided by pages produced per tree.
Details: Understanding trees saved helps quantify environmental benefits, supports sustainability reporting, and encourages responsible paper use.
Tips: Enter the total pages used, recycling rate (default 0.7 for 70%), and pages per tree (default 8333.33). All values must be > 0 except rate which is 0-1.
Q1: Why 8333.33 pages per tree?
A: This is an industry estimate that one tree produces about 8,333 sheets of paper, though actual numbers vary by tree size and paper type.
Q2: What's a typical recycling rate?
A: Rates vary by location, but 0.7 (70%) is a common average for many communities with recycling programs.
Q3: Does this include energy and water savings?
A: No, this only calculates trees saved. Recycling also saves significant energy and water resources.
Q4: How do I find my organization's pages used?
A: Track paper purchases (reams × 500) or use printer/copier meter readings.
Q5: Does this account for different paper weights?
A: The default assumes standard 20lb copy paper. For heavier papers, adjust pages per tree downward.