Blog
Jun. 18, 2026
A book can look great on screen but still feel wrong in hand. The cover may be beautiful, the colors may be accurate, and the layout may be clean. But if the paper weight is not right, the finished book may feel too thin, too stiff, too bulky, or less premium than expected.
In custom book printing, paper weight changes the whole feel of a book. It affects how the pages turn, how the cover bends, and whether the book opens comfortably.
But choosing paper is not simply about using the thickest option. Heavy paper can make a photo book feel premium, but it may make a long novel too bulky. A thick softcover cover can feel strong, but it still needs to fold smoothly around the spine.
Paper weight tells you how heavy paper is, but it does not fully explain how the paper will feel. Two papers with similar weight can still feel different because of coating, density, texture, and finishing.
GSM means grams per square meter, and it is easier to compare across international printing projects.
Lb is common in the US market, but it can be confusing. Bond paper, text paper, and cover paper use different systems. That is why 80lb text paper and 80lb cover paper do not feel the same.
A simple way to understand it:
GSM is usually easier to compare.
Lb should always be checked with the paper type.
Paper weight and paper thickness are related, but not exactly the same.
Coating, paper density, and lamination can change the final feel.
In daily printing work, we usually start with GSM because it is clearer. When someone gives us lb, we always check the paper type first: bond, text, or cover.
Regular printer paper weight is usually around 20lb bond paper, which is about 75gsm. 80gsm is also common for everyday office printing.
So if someone asks, “what weight is regular printer paper,” the simple answer is usually 75–80gsm.
Regular printer paper is fine for office documents, drafts, simple worksheets, and basic manuals. But for a finished book, it may feel too thin. Dark ink may show through, and the book may feel more like office material than a retail product.
For a simple workbook, 80gsm can still work. For a planner, journal, or better-quality book, 100gsm or 120gsm often gives a more solid feel.
Paper weights for printing can be a little confusing when you only look at the number.
For example, 80lb text paper and 80lb cover paper may sound close, but they feel different in real use. Printers often use 80lb text paper for book pages, brochures, and catalogs because it stays flexible. For covers, 80lb cover paper gives more stiffness and a thicker cardstock-like feel.
This is why the paper category matters. If a specification only says “80lb paper,” it is not clear enough.
In daily production, GSM is usually easier to use because it gives a more direct comparison. You can still use lb, but you should always pair it with the paper type.
For softcover book covers, 80lb cover paper is better when the cover needs to be lighter and more flexible.
Use 80lb cover paper when:
the book is thin
the cover needs to bend easily
the project does not need a very stiff cover
a lighter cover feel is acceptable
110lb cover paper is better when the book needs a stronger and more premium hand feel.
Use 110lb cover paper when:
the cover needs more support
a premium feel is important
lamination or special finishing will be added
the cover should feel more solid in hand
Still, heavier paper does not always give a better result. A softcover cover needs to fold cleanly around the spine. If the paper is too stiff or the factory does not score it properly, the spine area may crack or look rough. In many cases, a well-laminated 300gsm cover gives a better finish than a heavier cover with poor folding.
For custom book printing, the better question is not “What is the thickest paper?” but “What paper weight fits this book?”
For novels, 70–100gsm is common.
A long novel should feel comfortable to hold and easy to open. For a 300-page novel, 80gsm or 90gsm is often more practical than heavier paper stock.
If the paper is too thick, the book may look bulky, feel stiff, and cost more to ship. Thick paper can sound premium at first, but for text-heavy books, comfort often matters more.
For workbooks, journals, and planners, 80–120gsm is common.
People often write in these books, so the paper should feel smooth and help reduce show-through. A simple workbook may use 80gsm. A branded planner or journal may feel better with 100gsm or 120gsm.
For writing pages, uncoated paper usually works better. Pens and pencils feel more natural on it than on glossy coated paper.
For photo books, cookbooks, and image-heavy books, 128–200gsm is common.
These books need better opacity, stronger color performance, and a smoother surface. Coated paper can make images look sharper and brighter. Matte paper gives a softer and more premium look. Uncoated paper feels natural, but it may absorb more ink.
For books with many images, paper weight is only part of the result. The paper surface also affects how sharp, bright, and clean the printed images look.
For most softcover books, 250–350gsm cover paper is a practical starting point.
For thin booklets, we usually choose 250gsm. For standard softcover books, 300gsm often gives a good balance. For premium softcover books, 350gsm can add a stronger cover feel.
Softcover covers need balance. They must protect the pages, but they also need to open smoothly. If the cover paper is too thin, the book can feel weak. If it is too thick, the spine may become stiff or crack after folding.
Finishing also changes the final feel:
matte lamination gives a soft, clean look
gloss lamination makes colors look brighter
soft-touch lamination feels smoother and more premium
foil stamping, embossing, and spot UV add a stronger custom effect
From production experience, the cover should be chosen together with lamination, scoring, and binding. These details decide whether the final softcover book feels polished or rough.
For hardcover book printing, the outside printed paper is not the main source of strength.
Hardcover wrapping paper is often around 128–157gsm because it needs to wrap smoothly around greyboard. The hard structure mainly comes from the board underneath.
This surprises many people. They may think the outside printed paper should be thick because the book is hardcover. But if the wrapping paper is too thick, it can be harder to fold around the corners and edges. The cover may look bulky instead of clean.
A hardcover book usually includes:
printed wrapping paper for the design
greyboard for the rigid structure
endpaper to connect the book block and cover
surface finishing to protect the outside
So for hardcover books, ask about both the wrapping paper weight and the board thickness. A hardcover book can still feel strong and premium when the printed wrapping paper is not thick.
Here is a simple starting point:
| Book Part | Common Paper Weight | Best For |
|---|---|---|
| Regular printer paper | 75–80gsm | Simple documents and basic manuals |
| Novel pages | 70–100gsm | Text-heavy books |
| Planner / workbook pages | 80–120gsm | Writing pages |
| Photo book pages | 128–200gsm | Image-heavy books |
| Softcover cover | 250–350gsm | Paperback covers |
| Hardcover wrapping paper | 128–157gsm | Printed paper over greyboard |
| Children’s picture book pages | 157–250gsm | Durable illustrated books |
Regular printer paper is usually 20lb bond paper, around 75gsm. In many markets, 80gsm is also common.
Novel pages often use 70–100gsm. Workbooks usually use 80–120gsm. Photo books need heavier paper, often 128–200gsm, while softcover covers commonly use 250–350gsm.
80lb cover paper is lighter and easier to fold. 110lb cover paper is thicker, stronger, and more premium. The better choice depends on book type, cover design, binding, and finishing.
For novels and text-heavy books, 70–100gsm is common. For image-heavy books, 128–157gsm or higher may be better.
Most softcover book covers use 250–350gsm paper. The final choice depends on book thickness, spine folding, lamination, and desired hand feel.
Hardcover wrapping paper is often around 128–157gsm because it needs to wrap cleanly around greyboard.
Children’s picture books often use 157–250gsm pages. Board books usually use mounted board or thick paperboard instead of regular paper.
Paper weight matters, but it should not be chosen by GSM or lb alone. A good paper choice should match the book type, page count, binding method, finishing, durability needs, and shipping budget.
For custom book printing, the best paper is not always the heaviest one. The right paper should feel good, print clearly, open comfortably, and match how people will use the finished book.
Not sure which paper weight fits your book? Contact us with your book size, page count, binding style, and finishing needs.
