Estimate how many trees your paper use equals from sheets, reams or cartons, or how many sheets of paper one tree makes (about 8,333 copy-paper sheets).

One ream = 500 sheets; one carton = 10 reams.

Default ≈8,333 sheets per tree is a typical estimate for 8.5 × 11 inch, 20 lb copy paper. Change it for other paper.

Recycled content
Blank means 0%. This only splits the total fiber equivalent.

Paper To Tree Formula

Total tree equivalents = sheets ÷ assumed sheets per tree. The following formula estimates only the recycled-fiber share of that total. This proportional estimate does not measure actual trees saved or a full life-cycle environmental benefit.

T = (P × R) / S

Variables:

  • T is the illustrative recycled-fiber tree equivalent
  • P is the number of physical paper sheets (not printed sides)
  • R is the recycled-content fraction of the paper (decimal from 0 to 1; enter percent in the calculator)
  • S is the assumed sheets-per-tree yield (illustratively about 8,333 for standard letter-size 20 lb copy paper; tree size, paper and mill process vary)

For the recycled-fiber equivalent, multiply physical sheets by the recycled-content fraction, then divide by the assumed yield. For the total equivalent, omit the fraction. Virgin-fiber equivalent = total × (1 − recycled fraction). A ream is 500 sheets and a carton here is 10 reams. Reverse mode multiplies tree equivalents by yield; choose sheets, reams or cartons as the output.

Sheets to Recycled-Fiber Tree Equivalents Conversion Table (Assumes recycled-content fraction r = 0.50 or 50% and S ≈ 8,333 sheets/tree)
Sheets Used Recycled-Fiber Tree Equivalents
100.001
250.002
500.003
750.005
1000.006
1250.008
1500.009
2000.012
2500.015
3000.018
3500.021
4000.024
4500.027
5000.030
6000.036
7500.045
1,0000.060
1,5000.090
2,0000.120
5,0000.300
* Rounded to 3 decimals. Assumes recycled-content fraction r = 0.50 (50%) and S ≈ 8,333 sheets/tree. Formula: Recycled-Fiber Tree Equivalents = (Pages × r) / 8,333. At r = 0.50, about 16,666 sheets ≈ 1 tree equivalent.

How to Calculate Paper To Tree?

The following steps estimate the recycled-fiber tree equivalent using the Paper To Tree formula; they do not measure trees saved.

  1. First, count physical paper sheets (P), counting a double-sided sheet once.
  2. Next, determine recycled content (R). Enter its percentage in the calculator; use a decimal from 0 to 1 in the formula. Blank recycled content means 0%.
  3. Next, choose an assumed sheets-per-tree yield (S) appropriate to the paper. The default is illustrative.
  4. Next, gather the formula from above = T = (P * R) / S.
  5. Finally, calculate the recycled-fiber tree equivalent (T), shown as a secondary result in the calculator.
  6. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

number of pages of paper used (P) = 250

recycled content (R) = 0.75 (enter 75% in the calculator)

assumed sheets-per-tree yield (S) ≈ 8,333 (varies). Using this estimate, the total is 250 / 8,333 ≈ 0.0300 tree equivalents. The recycled-fiber share is T = (250 × 0.75) / 8,333 ≈ 0.0225 tree equivalents. These are illustrative fiber equivalents, not trees proven saved.