Go Paperless Calculator

Paper usage and savings calculations help offices, schools, and households understand the environmental and financial impact of their printing habits. The math links sheets printed to dollars spent, trees consumed, and carbon emitted.

What this calculator works out: Annual Sheets = Pages per Month × 12 Annual Saving = Annual Sheets × Cost per Page Trees = Annual Sheets ÷ 8,333 CO2 Avoided = Annual Sheets × 6 grams

Where “cost per page” comes from, since it is the input people guess at. A ream of 500 sheets at $6 is 1.2 cents of paper per sheet, and paper is the cheap part. Toner and drum wear on a laser printer add roughly another 1 to 3 cents; inkjet cartridges push the total to 5 to 12 cents. So 2 to 4 cents is realistic for an office laser and 8 cents is a fair figure for a home inkjet. These are US ballpark numbers and they move with your hardware and your supplier, so use a real figure from your own last cartridge if you have one.

Environmental conversion factors (commonly cited industry estimates):

• 1 tree produces approximately 8,333 sheets of standard copy paper
• Producing one sheet emits roughly 6 grams of CO2 across pulping, milling, and transport
• 1 ream (500 sheets) of standard 20 lb copy paper weighs about 5 lbs

The first two are averages across an industry that varies enormously by mill, by fiber source, and by how far the paper traveled. Recycled stock runs materially lower on both counts. Treat the tree and CO2 figures as an order of magnitude, not a measurement.

Worked example: A home office prints 500 pages a month on an inkjet at 8 cents a page:

• Annual sheets = 500 × 12 = 6,000 sheets
• Annual saving = 6,000 × $0.08 = $480
• Trees = 6,000 ÷ 8,333 = 0.72 trees
• CO2 avoided = 6,000 × 6 g = 36 kg

Scale it up and the tree count starts to matter. An office of 20 people each printing 40 pages a day over 250 working days gets through 200,000 sheets a year, which is 400 reams, about 24 trees, and 1,200 kg of CO2. At 3 cents a page that is $6,000 a year of consumables.

Printing double-sided halves the sheet count without printing any less. It is the cheapest change available, it asks nothing of anyone beyond a driver default, and most offices have never touched the setting.

Typical benchmarks:

• Average US office worker prints ~10,000 sheets/year
• Average US household prints ~500 sheets/year
• Laser printing costs ~2–4¢/page; inkjet ~5–12¢/page including ink