Paper thickness on an HP printer is really a paper-weight setting — HP asks for the loaded stock's weight in GSM (grams per square meter) or in the US pound (lb) basis weight, and that weight, not a caliper reading, drives how the rollers and fuser behave. The "how to change paper thickness on HP printer" question is therefore about matching the ream in your hand to the right HP media name on the touchscreen or in the print driver. Plain, Brochure, Heavy, Cardstock and Photo Paper on an HP control panel are weight buckets tied to GSM or lb ranges, and the printer feeds at different rates, temperatures and roller pressures depending on which bucket you pick. Because the US pound system uses a different basis sheet size for each paper grade — bond, text, cover, index, tag and bristol all differ — the same "100 lb" label can mean paper that is almost twice as thick as another "100 lb" stock. The cleanest fix is to convert the GSM printed on your ream into the matching lb number for the exact stock you loaded, then choose the closest HP media option. The Paper Weight Converter does that swap instantly, by paper type.
What "paper thickness" actually means on an HP printer
HP printers don't take a "thickness" dial in millimeters the way a metal shop measures sheet stock — they ask you to pick a media category that is really a paper-weight bucket. On the printer's touchscreen, in the HP Smart app, or in the print driver, you see options like Plain, Brochure, Matte, Heavy, Cardstock and Photo Paper. Each of those names is tied to a GSM or lb range, and HP uses the paper's weight — not a caliper reading — to set how the rollers grip, how fast the ink or toner lays down, and how hot the fuser runs.
When users search for how to change paper thickness on an HP printer, what they really need is the GSM or lb number for the stock they have loaded, plus the matching HP media name. A ream of office paper marked 80 gsm should go in as Plain; a 200 gsm cardstock should go in as Cardstock or Heavy. The HP control panel lets you confirm the tray's media type after you load it, and that is the moment the right number matters.
Why the same pound number is not the same paper
This is where most HP users slip up. In the US system, a paper's pound weight is the total weight of a 500-sheet ream cut to that grade's basis size, and each grade uses a different basis size. That basis size is the "parent sheet" the printer industry standardised years ago, and it is why a ream of bond paper is much bigger than a ream of cover stock even when both weigh the same in pounds. The conversion factor that turns pounds into GSM is derived from each grade's basis sheet, using 1 in² = 0.00064516 m² and 1 lb = 453.59237 g.
| Paper type | Basis size | lb → gsm factor (approx.) |
|---|---|---|
| Bond / Writing / Ledger | 17 × 22 in | 3.76 |
| Text / Book / Offset | 25 × 38 in | 1.48 |
| Cover | 20 × 26 in | 2.70 |
| Index | 25.5 × 30.5 in | 1.81 |
| Tag | 24 × 36 in | 1.63 |
| Bristol | 22.5 × 28.5 in | 2.19 |
Same pound number, very different paper: 100 lb text is about 148 gsm, while 100 lb cover is about 270 gsm — almost double the thickness for the identical "100 lb" label. That is exactly why a stack of "80 lb cardstock" feels completely different from "80 lb book paper," and why an HP printer that happily feeds 80 lb text will jam if you run 80 lb cover through the same tray. The bond, writing and ledger grade uses the smallest basis sheet (17 × 22 in), which means it takes far more actual paper mass to reach 100 lb, and the GSM goes up sharply with each pound. The text and book grade uses a much bigger 25 × 38 in basis sheet, so the same 100 lb represents a much thinner stack.
Convert paper weight for your HP printer
The fix is one quick conversion. Once you know the GSM printed on the wrapper — almost every ream has it on the side — flip it to the matching lb number for the stock type, and that is the value you pick on the HP menu. Use the Paper Weight Converter for the swap.
- Pick the direction — lb → gsm or gsm → lb — with the toggle.
- Type the paper weight printed on your ream into the value field (for example, "200" if your pack says 200 gsm).
- Choose the paper type — bond, text, cover, index, tag or bristol — that matches what you loaded in the tray.
- Read the converted result instantly; tick "Compare across all paper types" to see every stock at once, which is the fastest way to spot if you grabbed the wrong wrapper.
The whole process runs in your browser, so nothing about the paper you loaded leaves your computer — handy when you are working with sensitive print jobs.
HP-friendly paper weights and what they match to
HP's media menus group paper into broad weight buckets. The exact labels vary by model — OfficeJet, LaserJet, Smart Tank, ENVY all use slightly different names — but the underlying weight ranges look like this. Treat these as guidance, not a hard spec sheet; the precise bands come from your printer's own documentation.
| HP media bucket | What you typically load | Approximate GSM |
|---|---|---|
| Plain / Everyday | Office copy paper, letters | ≈ 75–90 gsm |
| Presentation / Matte | Reports, light brochures | ≈ 90–120 gsm |
| Brochure / Heavy | Tri-fold brochures, flyers | ≈ 120–160 gsm |
| Cardstock / Extra Heavy | Invitations, covers, tags | ≈ 160–270 gsm |
| Photo Paper | Glossy/satin photo sheets | ≈ 180–300 gsm |
A concrete checkpoint set: 20 lb bond is about 75 gsm, 24 lb bond is about 90 gsm, 70 lb text is about 104 gsm, 80 lb text is about 118 gsm, 65 lb cover is about 176 gsm, 80 lb cover is about 216 gsm, 100 lb cover is about 270 gsm and 90 lb index is about 163 gsm. If your ream says 200 gsm and you think it is cardstock, confirm with the converter — at 200 gsm you may be looking at roughly 74 lb cover, 135 lb text, or a different stock depending on the wrapper you picked up. Photographic paper is its own world, with most consumer HP photo stocks landing between 180 and 300 gsm depending on finish and brand.
Reading the converter result against the HP media list
Once the converter hands you a number, walk it into the HP menu in this order:
- Confirm the paper type first. "Cardstock" on an HP printer almost always means cover stock — roughly 60 lb to 100 lb cover — not text or bond. If the converter says 216 gsm and 80 lb cover, that is the Cardstock slot.
- Use the lb figure when the HP menu lists pounds (common on US LaserJet and OfficeJet models). Use the GSM figure when the menu is metric.
- If you used Compare across all paper types, scan the row for a stock that surprises you. 100 gsm could be roughly 67 lb text or 27 lb bond — very different feeds, same single weight on the converter's main readout.
- After setting the media type in the driver or on the panel, print a single test page before running the full job. A wrong media setting on a heavy stock is the most common cause of misfeeds on HP inkjet and laser models alike.
If you are switching between very different stocks in the same day — plain paper in the morning, heavyweight cardstock in the afternoon — flip the tray's media type on the printer itself before sending the new job. The driver setting and the tray setting both need to agree; otherwise the printer will either warn you or feed at the wrong rate.
For users moving between brands, the same GSM and lb numbers drive media selection on most laser and inkjet printers, so the conversion logic carries over. If you are also setting up a Brother machine with the same pack of paper, the Brother paper thickness walkthrough follows the same GSM-to-lb swap.
The arithmetic is short enough to check by hand for one spot. To turn pounds into gsm for a known stock, multiply by that stock's factor. For cover, the factor is about 2.70, so 80 lb cover gives 80 × 2.70 = 216 gsm. For text, the factor is about 1.48, so the same 80 lb gives 80 × 1.48 = 118 gsm. For bond, the factor is about 3.76, so 80 lb bond works out to roughly 80 × 3.76 = 301 gsm — a stock that does not exist in everyday office supply, which is exactly why the paper type must be set before the calculator does the math.
Related reading: How to Change Pixels to CM in Procreate.