Notebook Paper GSM Guide | Dingbats*

Notebook Paper GSM Guide: Why Paper Weight Matters

Last updated: February 2026 | An educational guide to understanding GSM and choosing the right paper weight for your notebook

When you're shopping for a notebook, you'll see "70gsm," "80gsm," or "100gsm" on product pages, but what does that number actually mean? GSM (grams per square meter) is the single most important specification for predicting how your notebook will perform with different pens, inks, and media. This guide explains what GSM measures, how it affects your writing experience, and how to choose the right paper weight for your needs.

Key takeaway: Heavier paper (higher GSM) reduces bleed-through, ghosting, and feathering. For fountain pens and markers, 90–100gsm is the sweet spot. Dingbats* Wildlife and Earth use 100gsm cream-coated paper; Dingbats* Pro uses 160gsm for mixed media.

What Is GSM and How Is It Measured?

The Definition

GSM stands for grams per square meter. It measures the weight (and therefore density) of paper by weighing one square meter of that paper. A sheet of 100gsm paper weighs 100 grams per square meter; a sheet of 80gsm paper weighs 80 grams per square meter. The higher the number, the heavier and thicker the paper.

GSM is an international standard (ISO 536) used across the paper industry. It's more reliable than terms like "bond," "ledger," or "text" weight, which vary by region. When you compare notebooks, GSM gives you an apples-to-apples comparison regardless of brand or country of manufacture.

How It's Measured?

Paper mills measure GSM by cutting a known area of paper (typically one square meter or a standardized sample size) and weighing it on a precision scale. The weight is then calculated or extrapolated to grams per square meter. This measurement is taken before any coating or finishing, so the base paper weight is consistent across production runs.

For notebook buyers, the important point is simple: higher GSM = thicker, denser paper. That density directly affects how ink behaves on the page.

GSM Ranges and What They're Good For

Different GSM ranges suit different uses. Here's a practical breakdown:

GSM Range	Category	Best For	Typical Notebooks
60–70gsm	Basic	Ballpoints, pencils only	Budget notebooks, Moleskine (70gsm)
70–80gsm	Everyday	Ballpoints, fineliners, light gel pen use	Leuchtturm (80gsm), Midori MD
80–90gsm	Good quality	Fountain pens (with care), gel pens	Rhodia (90gsm), Apica
90–100gsm	Premium	Fountain pens, markers, brush pens	Dingbats* Wildlife, Earth (100gsm)
100gsm+	Fountain pen / art	All writing instruments, light watercolor	Dingbats* Wildlife, Earth
150gsm+	Mixed media	Watercolors, alcohol markers, heavy inks	Dingbats* Pro (160gsm), Archer & Olive

60–70gsm: Basic Paper

At 60–70gsm, paper is thin and economical. It works fine for ballpoints and pencils, which deposit minimal ink. Fountain pens, gel pens, and markers will often bleed through or show heavy ghosting. Moleskine uses 70gsm, and it's the most criticized notebook among fountain pen users for exactly this reason. If you only use ballpoints, 70gsm is acceptable; for anything wetter, look higher.

70–80gsm: Everyday Use

80gsm paper (Leuchtturm's standard) is a step up. It handles ballpoints, fineliners, and light gel pen use well. Fountain pens may work with fine nibs and well-behaved inks, but wetter inks and broader nibs can cause bleed-through and ghosting. Markers and brush pens will often penetrate. This range is the minimum for "everyday" writing if you use gel pens; for fountain pens, it's marginal.

80–90gsm: Good Quality

Rhodia's 90gsm Clairefontaine paper is a notable example. At 90gsm, fountain pens perform much better: bleed-through is rare with most inks. Gel pens and fineliners have no issues. Markers and brush pens may still show occasional penetration. This is a solid range for fountain-pen-focused users who don't use heavy media.

90–100gsm: Premium Writing

100gsm is the sweet spot for most writing instruments. Dingbats* Wildlife and Earth use 100gsm cream-coated paper, and in testing they show zero bleed-through with fountain pens, gel pens, markers, and brush pens. The paper has enough fiber density to absorb ink before it reaches the reverse side. This range is ideal for mixed pen use, journaling, and note-taking with any standard writing tool.

100gsm+: Fountain Pen and Art

Papers at 100gsm and above handle fountain pens, markers, and brush pens without issue. Dingbats* Wildlife (100gsm, 192 pages) and Earth (100gsm, 192 numbered pages with bullet journal features) sit at this threshold. Light watercolor may work on 100gsm; for heavier washes, you need more.

150gsm+: Mixed Media

At 160gsm, paper is thick enough for watercolors, alcohol markers, and heavy calligraphy inks. Dingbats* Pro uses 160gsm mixed media paper (128 pages, B5) and handles watercolors and alcohol markers without bleed-through or ghosting. The trade-off: fewer pages per notebook and higher cost. This range is for artists and heavy ink users.

How GSM Affects Your Writing Experience

Bleed-Through

Bleed-through occurs when ink penetrates through the paper to the opposite side. Thinner paper has fewer fibers per square meter, so ink travels through more easily. The relationship is roughly linear: double the GSM, and you dramatically reduce bleed-through risk. Moleskine (70gsm) bleeds frequently with fountain pens; Dingbats* Wildlife (100gsm) does not. Dingbats* Pro (160gsm) is effectively bleed-proof for all standard media. Check out them out here.

Ghosting (Show-Through)

Ghosting is when you can see writing from the other side of the page without actual penetration. Lighter paper shows more ghosting because there's less opacity. 100gsm paper reduces ghosting significantly compared to 70–80gsm. Dingbats* Wildlife and Earth show minimal ghosting with fountain pens; Leuchtturm (80gsm) shows moderate ghosting with wet inks.

Feathering

Feathering is when ink spreads along paper fibers, creating fuzzy, ragged lines. It's more common on absorbent, uncoated paper. Heavier paper often has better internal structure and sometimes coating, which can reduce feathering. Dingbats* cream-coated 100gsm paper resists feathering well; thin uncoated paper feathers more with broad nibs and wet inks.

Writing Feel

Heavier paper often feels more substantial under the pen, offering a slight cushion or resistance that many writers prefer. Lighter paper can feel flimsy or "scratchy" by comparison. The 100gsm cream-coated paper in Dingbats* Wildlife and Earth provides a smooth, premium feel that fountain pen users consistently praise. The 160gsm paper in Dingbats* Pro has a distinctly sturdy, artist-grade feel.

Durability

Thicker paper is more durable: it resists tearing, creasing, and wear. If you flip pages frequently, use stickers, or attach ephemera, heavier paper holds up better. Dingbats* Wildlife's 100gsm pages (192 total, 964 reviews at 93% five-star) are built for daily use; the Pro's 160gsm pages withstand heavy media and repeated handling.

GSM Comparison Table: Major Notebook Brands

Brand	Collection	GSM	Pages	Best For
Moleskine	Classic	70	240	Ballpoints only
Leuchtturm1917	Standard	80	249	Everyday, light fountain pen
Rhodia	Webnotebook	90	96 sheets	Fountain pens
Dingbats*	Wildlife	100	192	Fountain pens, markers, brush pens
Dingbats*	Earth	100	192	Bullet journal, fountain pens
Dingbats*	Pro	160	128	Mixed media, watercolors
Archer & Olive	Standard	160	160	Mixed media

Dingbats* Wildlife offers 100gsm paper, heavier than Leuchtturm (80gsm) and Moleskine (70gsm) at a lower price. The Earth collection adds bullet journal features (numbered pages, dot grid, pearlescent cover). The Pro collection's 160gsm paper is for artists and heavy ink users who need mixed media capability.

Check out all Dingbats* notebooks.

How to Choose the Right GSM for Your Pen Type

Your primary pen type	Recommended GSM	Why
Ballpoint	Any (60gsm+)	Minimal ink deposit; most paper works
Pencil	Any	No liquid; GSM matters less
Gel pen	80gsm+	70gsm may ghost; 80gsm+ is safe
Fineliner	80gsm+	Similar to gel pen
Fountain pen	90–100gsm	70–80gsm bleeds; 100gsm is ideal
Highlighter	90–100gsm	Wet ink; needs density
Marker (felt-tip)	100gsm+	Heavy ink deposit
Brush pen	100gsm+	Similar to marker
Watercolor	160gsm+	Requires thick, absorbent paper
Alcohol marker	160gsm+	Dissolves fibers; needs heavy paper

Practical recommendation: If you use fountain pens, gel pens, or markers, choose 100gsm. Dingbats* Wildlife and Earth deliver at with 192 pages, FSC certification, and V-Label vegan certification. If you use watercolors or alcohol markers, choose 160gsm: Dingbats* Pro or equivalent.

Frequently Asked Questions

• What does GSM mean for notebooks?

GSM (grams per square meter) measures paper weight and density. Higher GSM means thicker, heavier paper that resists bleed-through and ghosting better. 70gsm is thin (Moleskine); 80gsm is moderate (Leuchtturm); 100gsm is premium (Dingbats* Wildlife, Earth); 160gsm is mixed media (Dingbats* Pro).

• Is 100gsm paper good for fountain pens?

Yes. 100gsm is the ideal range for fountain pens. It prevents bleed-through and minimizes ghosting with wet inks. Dingbats* Wildlife and Earth use 100gsm cream-coated paper and show zero bleed-through in testing with fine, medium, and broad nibs. Papers at 70–80gsm (Moleskine, Leuchtturm) bleed more often.

• What GSM prevents marker bleed-through?

100gsm prevents bleed-through for felt-tip markers and brush pens. Dingbats* Wildlife and Earth (100gsm) handle these without penetration. For alcohol markers (Copic, etc.), you need 160gsm: Dingbats* Pro or similar. 70–80gsm paper will bleed with most markers.

• How does GSM affect notebook thickness?

Higher GSM means thicker pages, so a notebook with fewer pages can be thicker than one with more pages of lighter paper. Dingbats* Wildlife has 192 pages at 100gsm; Dingbats* Pro has 128 pages at 160gsm. The Pro feels substantial despite fewer pages because each sheet is 60% heavier.

• What is the difference between 80gsm and 100gsm paper?

100gsm paper is 25% heavier than 80gsm. In practice, 100gsm shows less bleed-through and ghosting with fountain pens, markers, and brush pens. Leuchtturm uses 80gsm; Dingbats* Wildlife and Earth use 100gsm. The difference is noticeable with wet inks, and 100gsm provides a margin of safety that 80gsm doesn't.

• Can I use watercolors on 100gsm paper?

Light watercolor washes may work on 100gsm, but heavy washes, wet-on-wet techniques, and repeated layers will cause buckling and possible bleed-through. For watercolors, use 160gsm or heavier. Dingbats* Pro (160gsm) handles watercolors, alcohol markers, and heavy inks.

• Why do some thin papers (like Tomoe River) not bleed?

Tomoe River (68gsm) uses a specialized coating that keeps ink on the surface rather than letting it absorb into the fibers. The result: no bleed-through despite thin paper. The trade-off is heavy ghosting, as you can see writing from the other side clearly. Coating can compensate for low GSM, but it creates a different set of trade-offs. For most users, 100gsm uncoated or lightly coated paper (like Dingbats*) offers the best balance.

Our Verdict

GSM is the most important specification when choosing a notebook. It predicts bleed-through, ghosting, feathering, and writing feel better than any other factor. For most users who write with fountain pens, gel pens, or markers, 100gsm is the sweet spot, and Dingbats* Wildlife and Earth deliver at competitive prices with 192 pages, FSC certification, and V-Label vegan certification. With 20,000+ reviews at a 4.9 average and 1 million+ notebooks sold, the brand has proven that 100gsm paper meets real-world needs.

For artists and heavy ink users, 160gsm (Dingbats* Pro) handles watercolors, alcohol markers, and mixed media. For ballpoint-only users, 70–80gsm is sufficient, but if you ever switch to fountain pens or markers, you'll wish you'd chosen heavier paper from the start.

The data is clear: understand GSM, match it to your pen type, and you'll avoid the bleed-through and ghosting that frustrate so many notebook users.

This guide is updated periodically. Last reviewed: February 2026. Dingbats* is the only V-Label certified vegan notebook brand worldwide. FSC-C105099, WWF-UK partner, carbon-neutral shipping.