LifeTally
Paper sheet calculator
How many sheets do my document copies need if each starts on a fresh sheet?
Compare one-sided and two-sided sheet counts and unused page positions for your chosen pages per side.
Your document and copy counts
Use whole counts. Pages and copies may be 0; pages per side must be at least 1. Every copy starts a fresh physical sheet. Use a setting your software and printer support.
Compare one and two sides
| Model | Sheets per copy | Sheets, all copies | Unused positions per copy | Unused positions, all copies |
|---|---|---|---|---|
| One side per sheet | 7 | 21 | 1 | 3 |
| Two sides per sheet | 4 | 12 | 3 | 9 |
How the estimate works
For each model, divide source pages by pages per side times 1 or 2, then round up to whole sheets for one copy. Multiply by copies only after rounding. Subtract source pages from available positions to count unused positions. Partial sheets are never shared between copies. Sides holding source pages equal source pages divided by pages per side, rounded up.
s = 1, 2
S = ceil(P ÷ (m × s))
total = S × C
unused = (S × m × s − P) × CA count model, not a page-layout or printer-control tool. Identical copies start on new sheets; unused positions are not added source pages. No booklet or poster layout, covers, separators, mixed documents, reprints, jams, ink, cost or time. Check actual pages-per-side and duplex settings; compatibility, readability and actual paper use are not guaranteed. No file upload or printing action.
Adobe: multiple pages and two-sided printing ↗Check the filled example
Chosen example: 13 pages, 3 copies, 2 pages per side. One-sided: 7 sheets per copy, 21 total, 3 unused positions total. Two-sided: 4 sheets per copy, 12 total, 9 unused positions total. The difference is 9 sheets. These are example inputs, not recommended print settings.
Accepted input values
- Source pages in one copy
- 13
- Number of identical copies
- 3
- Source pages placed on each side
- 2