Every toner box promises a number of pages. HP 58A says 3,000; HP 58X says 10,000; Canon 045H says 2,800. Those numbers are not guesses — they come from an international standard — but they are also not a promise about your printing. Here is what the number means, and how to turn it into a realistic estimate for your office.
Key takeaways
- What does 5% page coverage mean? About 5% of the page area is covered with toner — roughly a business letter of text with no graphics. It is the coverage used in the ISO yield tests.
- Will I get the full page yield printed on the box? You get close to it if you print mostly text. Pages with logos, tables, charts or photos use more toner and reduce the count; draft mode and lighter print settings increase it.
- Is page yield the same for black and color cartridges? Both use standardized tests, but the color test (ISO/IEC 19798) uses a five-page suite with graphics, so color yields are not directly comparable to mono yields.
The standards: ISO/IEC 19752 and 19798
ISO/IEC 19752 defines how mono laser cartridge yield is measured; ISO/IEC 19798 does the same for color. A defined test document is printed continuously, in default settings, on several printers with several cartridges from different production lots, until the cartridge reaches "end of life" (the page fades below a defined threshold, or the printer stops). The average number of pages is the declared yield. Manufacturers who use the standard — HP and Canon do — print the ISO reference on the box or spec sheet.
What "5% coverage" looks like
The mono test page is a business letter: a few paragraphs of text, a heading, a signature block. About 5% of the page area is black. A full page of dense text is 8–10%. A page with a logo and a table might be 12–15%. A slide printed full-page with a colored background can be 40–70%. Because toner use scales with coverage, that slide consumes roughly the toner of ten test pages.
Estimating your real yield
A workable rule of thumb: divide the declared yield by the ratio of your average coverage to 5%.
| What you print | Typical coverage | Real yield from a "3,000-page" cartridge |
|---|---|---|
| Letters, invoices, plain text | 4–6% | 2,500–3,500 pages |
| Reports with headers, tables | 8–12% | 1,300–1,900 pages |
| Marketing sheets, slides | 20–40% | 400–750 pages |
Two other things move the number. Short jobs cost yield: every print job spends a little toner on warm-up and cleaning cycles, so ten one-page jobs use more toner than one ten-page job. And draft or "EconoMode" settings stretch a cartridge by 20–30% at the cost of lighter output.
Color yields are different
ISO/IEC 19798 uses a five-page suite that includes graphics and photos, so a color cartridge's declared yield already assumes more coverage than the mono test. Black is still used on every page, which is why the black cartridge in a color printer usually runs out first. In most color LaserJet families the black and the three colors have slightly different yields (HP 414A: 2,400 black, 2,100 per color).
Standard vs high-yield
The high-yield cartridge (HP "X", Canon "H") is the same cartridge body with more toner and a chip that reports the larger capacity. Because the shell, drum and chip cost the same either way, the extra toner is cheap: high-yield cartridges are 30–45% cheaper per page than standard ones at typical prices. If your printer prints more than half a standard cartridge per month, buy the high-yield.
Why the printer's "pages remaining" is wrong
The printer estimates remaining pages from the toner it thinks is left and your recent coverage. Change what you print and the estimate jumps. Treat "low toner" as a signal to have the next cartridge on the shelf, not to replace immediately; you can usually print hundreds more pages before the fade is visible.
Frequently asked questions
What does 5% page coverage mean?
About 5% of the page area is covered with toner — roughly a business letter of text with no graphics. It is the coverage used in the ISO yield tests.
Will I get the full page yield printed on the box?
You get close to it if you print mostly text. Pages with logos, tables, charts or photos use more toner and reduce the count; draft mode and lighter print settings increase it.
Is page yield the same for black and color cartridges?
Both use standardized tests, but the color test (ISO/IEC 19798) uses a five-page suite with graphics, so color yields are not directly comparable to mono yields.
