节纸计算器 — 公式

How to Calculate Paper Savings

Reducing paper consumption saves trees, water, and energy.

Environmental Factors per Pound of Paper

  • Trees: ~1 tree per 100 lbs of paper
  • Water: ~3 gallons per pound
  • CO2: ~3.3 lbs CO2 per pound of virgin paper

    • Formula

    Paper Saved (lbs) = Reams * Reduction % * 5 lbs/ream

    A standard ream is 500 sheets (5 lbs). The average US office worker uses 10,000 sheets per year.

    计算示例

    An office using 20 reams/year reducing by 50% at $8/ream.

    1. Reams saved: 20 * 50% = 10 reams
    2. Paper weight: 10 * 5 = 50 lbs
    3. Trees saved: 50 / 100 = 0.5 trees
    4. Water saved: 50 * 3 = 150 gallons
    5. Cost saved: 10 * $8 = $80