Short version: the letters are the same, the rulers aren't. A Mitsubishi Hi-uni B and a Faber-Castell 9000 B share a label and almost nothing else. A pencil grade is a house recipe, not a measured constant, so a Japanese B usually reads darker and feels smoother than its European namesake even though it's nominally the same hardness. Below is how the two traditions actually line up, with a cross-scale table you can take to the paper.
If you've ever bought a B pencil from one brand, loved it, bought a B from another and wondered why it felt like a different tool entirely — you weren't imagining it. The HB scale is the most quietly misleading label in stationery. It looks like a spec. It behaves like a suggestion.
We catalogue every grade across both traditions — the full Mitsubishi Hi-uni run of 22 degrees and the Tombow Mono 100 at 17 — so we get to put them on the same sheet of paper, under the same light, and watch where the labels stop telling the truth. This is that comparison.
First, the thing nobody puts on the box: no one is enforcing the scale
There is no global standard that says a 2B must lay down a line of a given darkness or resist a given pressure. The H/B letters describe a pencil's place within its own maker's range. They are relative, not absolute. A brand fixes its own HB, then steps up and down from there by adjusting one ratio: graphite to clay.
More clay, fired harder, gives a paler, harder, longer-lasting point: that's the H end (H for "hard"). More graphite gives a darker, softer, faster-wearing line: the B end (B for "black"). F sits between H and HB. It's usually glossed as "fine point", but the origin is genuinely murky and you'll see "firm" claimed just as often. (The F story is workshop folklore, not documented fact — take it with salt.)
This recipe-not-rule reality is why comparing grades across brands is a real skill rather than a lookup. The letter scale grew up among European makers from the early 19th century — commonly traced to English and German pencil houses, with Faber-Castell later standardising its own degree steps — but it was always a commercial convention, never a binding measurement.
Where Japan and Europe genuinely diverge
This is the part most write-ups skip, and it's the one that matters: Japan has a national standard for pencils; Europe, effectively, doesn't.
Japanese makers grade against JIS S 6006, the Japanese Industrial Standard covering pencils, which sets out a 17-grade range from 6B to 9H along with test methods for the things that matter — hardness, line density, breaking strength. It doesn't force every brand to identical output, but it gives the whole industry a shared reference frame and a shared way of measuring. That's a meaningfully different starting point from Europe, where there's no equivalent pencil standard and each maker effectively publishes its own house scale, so the grades drift apart accordingly. (The standard and its 6B–9H span are well documented; the exact numerical test thresholds we cite from published sources, not our own lab.)
You can see the standard's fingerprint in the catalogue. The Tombow Mono 100 spans exactly 9H to 6B — 17 degrees, the full JIS range, no more, no less. It's a near-textbook implementation. The Hi-uni, by contrast, runs 10H all the way to 10B: 22 degrees. Mitsubishi built deliberately past the national standard at both ends, which is why Hi-uni is the line artists reach for when they want a genuinely extreme dark (the 10B) or a glassy hard point (the 10H) the standard range doesn't reach.
The takeaway: "Japanese grading" isn't a different alphabet. It's the same H–F–HB–B letters, anchored to a shared standard, then executed with finer materials. The divergence is in feel and consistency, not nomenclature.
Is a Japanese B softer or harder than a European B?
Neither, really, and that's the trap. Nominally they're the same hardness, and on a hardness test bench a Hi-uni B and a Lumograph B would land close. What separates them is what reaches the paper.
What reviewers report, and what we see on the bench, is that premium Japanese pencils read darker and lay down smoother at the same letter. A Hi-uni B doesn't feel soft in the sense of squashing under pressure; it feels like it's giving you more graphite for less effort. On the same paper it will often land closer to a European B or light 2B for darkness while still holding a point like a B. So the honest answer to "softer or harder?" is: much the same hardness, but darker and slicker — which most people's hands read as "softer".
One important caveat against sweeping statements: this gap is widest at the premium end. Compare a budget school pencil from each tradition — say the Mitsubishi 9800 against an everyday European HB — and the difference narrows a lot. The "Japanese pencils are darker and smoother" rule is really a "Hi-uni and Mono 100 are darker and smoother" rule. The flagship lines earn the reputation; the workhorses are closer to level pegging.
Why Hi-uni and Mono 100 feel smoother at the same grade
It comes down to what's in the core and how evenly it's distributed, not to some secret grading trick.
- Finer graphite particles. The flagship lines mill their graphite to a finer, more uniform particle size. Smaller, rounder particles slide over the tooth of the paper instead of dragging across it — that's the "buttery" feel people describe.
- A denser, more even graphite–clay matrix. Better dispersion means fewer hard grit specks and fewer voids. You get a consistent line with no scratchy surprises, and grade-to-grade steps that feel evenly spaced rather than lurching.
- Impregnation. Premium cores are run through waxes/oils so the graphite releases cleanly and the point glides. This is a big part of why a Mono 100 or Hi-uni feels "polished" against the page.
- Tighter quality control. Less variation between individual pencils in a dozen — the tenth pencil writes like the first.
None of this changes the letter on the pencil. It changes how trustworthy the letter is. The practical upshot: with Hi-uni or Mono 100 you can buy a grade ladder and rely on each step being a real, even increment — which matters enormously if you shade tonally.
The cross-scale table: matching grades across brands
This is the table no Western retailer seems to publish, because most stock one tradition. We hold both, so we can line them up. Read it as a feel map, not a measurement: the letter is the anchor, and the notes tell you how far each line drifts from it for darkness and drag on the same paper.
| European reference (Lumograph / Castell 9000) |
Hi-uni | Mono 100 | Budget lines (9800 / Mono J / 9900) |
What actually happens on paper |
|---|---|---|---|---|
| 2H | 2H | 2H | 2H | Closest agreement of the lot. At the hard end the recipes converge; you'll struggle to tell them apart for line darkness. |
| HB | HB (reads a touch darker) | HB (reads a touch darker) | 9800 HB is the closest, drier match; Mono J HB slightly softer-feeling | Same nominal hardness, but the Japanese flagships put down a marginally darker, slicker line. The 9800 is the honest like-for-like budget HB. |
| B | B — reads like a European B/light 2B | B — darker than a 9000 B, very even | Mono J B / 9900 B: similar darkness, a hair drier | This is the headline case. A Hi-uni B is not a 9000 B — it's noticeably darker and smoother for the same letter. |
| 2B | B–2B does it | 2B | 9900 2B; Mono J 2B | If you like a European 2B for writing, a Japanese B may already be enough. Buy a grade lighter than you think. |
| 4B–6B | 4B–6B, smoother and less crumbly | 4B–6B (Mono 100 stops at 6B) | 9900 to 6B | Japanese softs hold a point better and smudge a touch less than equivalently dark European softs — useful for controlled shading. |
| 8B (as dark as the Castell 9000 goes) | 9B–10B — goes well past it | — (range ends at 6B) | — | For genuinely extreme dark, Hi-uni's 9B and 10B outrun the Castell 9000 and most standard European ranges. This is Hi-uni's home turf. |
The single rule that captures most of this: for the premium Japanese lines, drop about half a grade when translating from a European pencil you already like. Your European 2B is roughly a Japanese B. Your European HB is roughly a Japanese HB that happens to look a little bolder.
The best Japanese pencils for drawing — and the grades worth buying
You don't need all 22 Hi-uni degrees to draw. A few grades do most of the work, and the lines below are the ones we'd put a beginner or a returning artist onto without hesitation.
Mitsubishi Hi-uni — the reference standard
If you buy one Japanese pencil to understand what the fuss is about, make it a Hi-uni B or 2B. The lay-down is dense and even, the grade steps are genuinely uniform across the range, and the 22-degree spread (10H–10B) means you can build a complete tonal kit in one line. It's the pencil we measure others against.
Check the Hi-uni B price →Tombow Mono 100 — the precise one
Mono 100 is the textbook JIS implementation: 9H to 6B, beautifully controlled, with a slightly cleaner, more "engineered" feel than the Hi-uni. Many people who draw technically or shade in fine gradients prefer it. The lacquer finish is also, frankly, gorgeous.
Check the Mono 100 B price →Tombow Mono J — the value flagship
The Mono J sits below the Mono 100 but borrows much of its character: smooth, dark for its grade, and noticeably better than its price suggests. The best "is the premium worth it?" experiment is to buy a Mono J B and a Mono 100 B together and feel the gap for yourself.
Check the Mono J B price →Mitsubishi 9800 — the honest everyday Japanese pencil
The 9800 is the workhorse: a clean, reliable HB-ish writer that's the truest like-for-like against a standard European school pencil. It won't dazzle you the way a Hi-uni does, and that's the point — it's where you see how much of the "Japanese magic" is really the flagship recipe rather than the country of origin.
Check the 9800 HB price →Kitaboshi 9900 Drawing Pencil — the sleeper
Kitaboshi is the quiet one. The 9900 is sold explicitly as a drawing pencil rather than a writer, it's well made in a clean cedar barrel, and it gives you most of the Japanese smoothness for noticeably less than the headline brands. A genuine recommendation for anyone building a first serious sketching set on a budget.
Check the Kitaboshi 9900 B price →How to translate a grade between any two brands
You won't always have our table to hand. The method that holds up:
- Anchor on the line, not the letter. Decide what darkness and drag you actually want, then find the grade that delivers it in the brand you're holding.
- Drop half a grade going European → premium Japanese (your 2B ≈ their B). Add it back going the other way.
- Treat budget lines as roughly equal across traditions. A 9800 HB and a school-grade European HB are close; the half-grade rule is a flagship phenomenon.
- For US labels: a "#2" pencil is, near enough, an HB. "#2½" is an F/H. That's the whole US-to-rest-of-world conversion.
- When in doubt, buy three adjacent grades of a new line and calibrate. A pencil is cheap; a wrongly graded set you don't trust is expensive in frustration.
FAQ
Are Japanese pencil grades the same letters as European ones?
Yes — both use the H–F–HB–B scale. The letters mean the same thing (H = harder/paler, B = softer/darker). What differs is execution: Japanese flagships read darker and feel smoother at the same letter, and Japanese makers grade against the JIS S 6006 national standard, which Europe has no direct equivalent of.
Is a Hi-uni B really darker than a Faber-Castell 9000 B?
On the same paper, yes, in our experience — the Hi-uni B reads closer to a European B/light 2B and feels noticeably smoother. They share a label and not much else, which is the whole point of this guide. If you switch brands, expect to drop about half a grade.
Which Japanese pencil should I start with for drawing?
A Mitsubishi Hi-uni B or 2B is the safest first purchase — it's the reference for smoothness and even grade steps. If budget matters, a Kitaboshi 9900 or Tombow Mono J in B gets you most of the way for less.
Does JIS S 6006 mean all Japanese pencils write the same?
No. The standard sets a shared 17-grade range (6B–9H) and test methods, but it doesn't force identical output. A Hi-uni and a 9800 are both "Japanese" and feel quite different — the standard is a common frame, not a recipe.
Why does Hi-uni go to 10B when the standard stops at 6B?
Mitsubishi extended the Hi-uni range past JIS at both ends — to 10H and 10B, 22 degrees in all — specifically to serve artists who want extremes the standard range doesn't cover. The 10B is one of the darkest mass-produced wood-cased grades you can buy.
Specs in this guide reflect the lines we stock and current maker ranges at the time of writing. Grade counts: Hi-uni 22 degrees (10H–10B), Mono 100 17 degrees (9H–6B). European range figures and the JIS S 6006 test thresholds are cited from published sources rather than our own measurement, and are flagged as such above. The cross-scale matches are an experiential bench comparison — useful as a starting point, not a metrological claim.