Compiled from 5 sources; we haven't tested this product ourselves yet. How we research
Quick answer
The MUJI Planted Tree Paper Notebook is a five-pack of thin B5 notebooks with colour-coded cloth spines. Each is 252 × 179 × 4 mm with 36 sheets, ruled at 6 mm (also 7 mm in Japan). MUJI makes the paper from fast-growing planted trees, and lists the notebooks as made in Indonesia.
On this page10 sections
Five B5 notebooks, 252 × 179 mm, with colour-coded spines; spine colours are representative (1 mm = 0.85 px).
Product facts
Product
MUJI Planted Tree Paper Notebook, B5, 6 mm rule, 36 sheets, pack of 5
Paper from planted (plantation) trees; cloth spine
Price range
$under $5 per notebook
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Notes on these facts
Made by Ryohin Keikaku Co., Ltd.. Made in Indonesia: MUJI USA gives Country/Region of Origin: Indonesia for the 6 mm five-pack and the B5 bleed-proof five-pack, and MUJI Japan's store gives 原産国・地域 インドネシア (Indonesia) for the B5 6 mm five-pack. Source. Price: example listing.
Price bands are typical US retail, checked October 2026. Conversions to US dollars are approximate, at October 2026 rates (US$1 = ¥158 = ₩1,330 = NT$32.5 = CN¥6.7 = SEK 9.9 = DKK 6.7 = ₺49.6 = C$1.41 = A$1.43 = CZK 21.7; €1 = US$1.12; £1 = US$1.32; CHF 1 = US$1.21).
Key takeaways
Each B5 notebook measures 252 × 179 × 4 mm (9.9 × 7 × 0.2 in) and has 36 sheets, per MUJI USA.
Each pack holds 5 notebooks with 5 different coloured cloth spines, so each can hold one subject.
MUJI Japan sells the B5 five-pack in 6 mm and 7 mm rules for ¥299 (about US$1.90), plus A5 and A6 five-packs at 6 mm.
MUJI USA and MUJI Japan both list Indonesia as the country of origin.
MUJI Japan's B5 pack averaged 5 out of 5 from 79 reviews; at about a dollar a notebook in the US it sits in our $ band.
What is the MUJI Planted Tree Paper Notebook?
It’s MUJI’s basic lined notebook, sold five at a time with a different coloured cloth spine on each. The B5 five-pack is the one MUJI USA tags as a best seller, and MUJI Japan sells it in several sizes and rulings.
MUJI Japan says the paper comes from fast-growing trees planted for the purpose, and MUJI USA links the line to its afforestation work. The spines are meant for sorting: one colour per class, project or kind of note.
MUJI Planted Tree notebook specs
Spec
B5 five-pack (6 mm)
Size
252 × 179 × 4 mm (9.9 × 7 × 0.2 in)
Sheets
36 per notebook (72 pages); 180 per pack
Ruling
6 mm lines, usable from any direction
Spine
Cloth, five colours per pack
Paper
Planted-tree (plantation) pulp
Japan price
¥299 (about US$1.90) per five-pack
JAN
4550584897320
Made in
Indonesia
Size, sheets and origin come from MUJI USA; price, JAN and the paper description from MUJI Japan, both read on October 22, 2026. MUJI Japan notes that the product number changed recently with no change to specs or size.
Which versions are there?
In Japan, the five-pack comes in B5 at 6 mm or 7 mm, and in A5 and A6 at 6 mm. MUJI Japan also sells the same planted-tree paper as double-ring notebooks and loose-leaf refills.
MUJI USA lists 6 mm and 7 mm five-packs and a separate “Bleed Proof Lined” B5 five-pack at 6 mm, which averaged 4.6 stars from 22 reviews when we checked. Japan sells a matching “less show-through” (裏うつりしにくい) B5 pack at 7 mm.
6 mm suits small handwriting; 7 mm leaves room for larger writing (1 mm = 4 px).
Is it good paper for pens?
MUJI USA says the sheets are thin but take highlighters and pens without bleeding through. Reviewers on MUJI USA call the lines light and the paper bleed-proof, and MUJI Japan’s B5 pack averaged 5 out of 5 from 79 reviews when we read it.
We haven’t tested it yet. A thin notebook paper like this usually shows some writing through the sheet with wet gel ink and fountain pens, so expect ghosting even where there’s no bleed.
How does it compare with other everyday notebooks?
It’s thinner and cheaper per notebook than most Japanese school notebooks, with the colour-coded spines as its signature.
MUJI figures are from MUJI’s stores and Campus figures from KOKUYO Japan, as given in each guide. For handwriting at 6 mm, a fine pen such as the MUJI gel ink pen at 0.38 or 0.5 mm keeps letters inside the lines.
How big is B5 compared with US letter?
B5 is 179 mm (7 in) wide by 252 mm (9.9 in) tall here, about 1.5 in narrower and 1.1 in shorter than an 8.5 × 11 in letter sheet. It still fits a standard backpack and gives a full-width writing line. Our paper sizes guide compares B5, A5 and letter, and our A5 vs B5 notebook size guide shows which suits class notes.
Where is the MUJI Planted Tree notebook made?
MUJI lists Indonesia as the country of origin. Both MUJI USA and MUJI Japan’s store give Indonesia for the five-packs. MUJI is a Japanese brand run by Ryohin Keikaku in Tokyo.
Frequently asked questions
How many pages are in a MUJI Planted Tree notebook?
Each notebook has 36 sheets, which is 72 pages, per MUJI USA and MUJI Japan. A five-pack gives you 180 sheets in all.
What size is the MUJI B5 notebook in inches?
MUJI USA lists it at about 9.9 × 7 × 0.2 in (25.2 × 17.9 × 0.4 cm). B5 is a little narrower and shorter than US letter paper, which is 8.5 × 11 in.
What is planted tree paper?
Paper made from fast-growing trees grown on plantations for the purpose. MUJI Japan describes it that way, and MUJI USA ties the line to its afforestation effort.
Is the MUJI Planted Tree notebook bleed-proof?
MUJI USA says the 6 mm notebooks are thin but take highlighters and pens without bleeding through, and it sells a separate Bleed Proof Lined B5 five-pack. We haven't tested either yet.
What's the difference between the 6 mm and 7 mm MUJI notebooks?
Only the line spacing. 6 mm fits more lines on a page and suits smaller handwriting; 7 mm is roomier. MUJI Japan sells both as B5 five-packs; MUJI USA lists 6 mm and 7 mm packs too.
Are MUJI notebooks made in Japan?
Not this one. MUJI USA and MUJI Japan both list Indonesia as the country of origin, although MUJI itself is a Japanese brand.
How is this different from the MUJI Recycled Paper Notebook?
The Recycled Paper Notebook uses recycled paper and has 30 sheets; the Planted Tree notebook uses plantation-grown pulp, has 36 sheets and comes in five-packs with coloured cloth spines.
