Dot grid paper, B5
Dot grid on B5, the default student notebook size across Japan and Korea — bigger than A5, lighter to carry than A4.
Opens with these settings already loaded. Change anything you like, then download as PDF, PNG or SVG.
There are two different B5s
ISO B5 is 176 × 250 mm. JIS B5, the Japanese Industrial Standard, is 182 × 257 mm, and that is the one Japanese and Korean notebooks actually use. They look identical side by side and differ by enough that a page printed to the wrong one sits visibly crooked when bound in. This generator uses the ISO size; if you are matching a Kokuyo Campus notebook or a Korean school pad, set a custom page of 182 × 257 mm.
Why B5 became the student size
B5 is noticeably larger than A5 and clearly smaller than A4 — wide enough for two columns of notes, or for a diagram beside the text, and light enough to carry several at once. That is why it is the default in Japanese and Korean schools and universities, in the same way A4 is standard in Europe and Letter in North America. It is a size chosen by students rather than by filing cabinets.
Spacing for character-based writing
At 5 mm you get roughly 32 dots across and 46 down inside sensible margins, which matches the 5 mm and 6 mm rulings of Japanese squared notebooks. If you are writing kanji or hangul rather than roman script, consider 6 or 7 mm instead — character-based writing wants a squarer and more generous cell than cursive Latin, which runs along a line rather than filling a box.
Printing it accurately
This only measures correctly if your printer doesn't rescale the page. In the print dialog set Scale: 100% — not "Fit to page" or "Shrink oversized pages". If you're not sure it worked, print the calibration page, measure the ruler on it with a real ruler, and it will tell you exactly what your printer is doing to the page.