Bouldering Grades Explained: V-Scale, Font, and Why Your Gym Lies

The first time I climbed outside, I got shut down on a V2. Not "worked it for an hour and eventually sent it" shut down. Shut down. Couldn't leave the ground on the start. I had been flashing V4 in my gym for three months. I drove home doing that specific kind of quiet math you do when your ego has been handed to you by a rock the size of a refrigerator. The math was wrong, obviously. The rock was fine. The gym was the problem — or rather, my reading of it was.

The 10-second answer

Bouldering grades measure the difficulty of a single boulder problem, and there are two scales you'll actually meet: the V-scale (V0, V1, V2… open-ended, used in the US) and the Font scale (4, 5, 6A, 6B, 6C, 7A… used in Europe). They are not precise, they are not standardized between gyms, and they are not a measure of you. Your gym's V4 and the V4 in a guidebook are two different currencies with a floating exchange rate.

The two scales, in plain English

The V-scale (US)

Invented at Hueco Tanks in Texas in the 1990s by John Sherman — the "V" is for Vermin, his nickname. It starts at V0 and counts up. There's no top; it stops wherever the hardest thing anyone has climbed currently sits. You'll also see VB (for "beginner", below V0) and modifiers like V4+ or V4-5 when the setter or the guidebook author isn't confident.

Rough shape of it, and I want to be honest that these are ranges, not laws:

• V0–V1: big holds, feet where you'd expect them. Your first month.
• V2–V3: real movement appears. Body tension starts to matter more than finger strength.
• V4–V5: the plateau where most gym climbers live for a long time. This is a good place to live.
• V6–V8: strong. Structured training usually shows up around here.
• V9+: a small fraction of climbers, and most of them are annoyingly humble about it.

The Font scale (Europe)

Named for Fontainebleau, the sandstone forest south of Paris where modern bouldering more or less grew up. It runs 3, 4, 5, then splits into letters — 6A, 6A+, 6B, 6B+, 6C, 6C+, 7A — and keeps going. The letters aren't decoration; a 6C+ and a 7A are genuinely different problems, not rounding error.

The confusing part for Americans: Font numbers look like French sport-climbing grades (5.12a becomes 7a+ over there) but they're a separate system. Lowercase letters usually mean roped routes, uppercase means boulders. If you see "7A" on a boulder in a Font guidebook, that is not 5.12.

So how do the numbers line up?

Roughly, and only roughly. Four landmarks are worth memorising because they hold up everywhere:

• V0 is Font 4 — the first real problem in either language.
• V4 is Font 6B — the plateau grade of both systems, and the most reliable pairing on any chart.
• V6 is Font 7A — the only conversion nobody argues about.
• V10 is Font 7C+ — double digits on one side, the last rung before 8A on the other.

Everything between those drifts, because Font has more rungs in the middle than the V-scale does. For the full chart in either direction, we keep two dedicated pages rather than repeating a table that goes stale: the V scale to Font converter for V-grades, and Font to V scale, 6A to 9A if you are reading a European topo.

And if what you actually want to know is not the number but the feeling — what a V5 demands, why V4 is where everyone stalls — that is what every V-grade feels like.

Why your gym lies (and why I don't fully blame them)

Here's the part nobody puts on the wall. Gym grades are set by a human being who has to fill a wall on a schedule, and that human has incentives.

Setting is a business decision

A gym that grades softly has members who feel like they're improving. Members who feel like they're improving renew their membership. I'm not being cynical — I'd probably make the same call running a commercial gym in a competitive market. But it means the number on the tag is partly a customer-experience decision, not a pure difficulty measurement.

The flip side exists too. Some gyms — usually the older, grubbier, more beloved ones — grade hard on purpose, as a personality trait. Same wall difficulty, three grades apart, depending on which door you walked through.

Setters have bodies, and those bodies are not yours

A problem set by someone 6'2" with a plus-two ape index will get graded from inside that body. If you're 5'4", a "V3" with a big span move might genuinely be your V5. That's not you being weak. That's the grade failing to describe a two-person experience with one number.

Styles hide inside grades

Two V4s can share nothing. One is a crimpy vertical face; the other is a big dynamic move to a jug on a 45. If you flash the first and fail on the second twelve times, you haven't discovered your grade — you've discovered your style. That's more useful information anyway.

Outside doesn't care about any of this

Outdoor bouldering grades are consensus grades: a first ascensionist proposes a number, and then decades of climbers argue it into rough agreement. Nobody's membership depends on it. Some classic areas are famously sandbagged — a V2 in a well-established guidebook can feel harder than your gym's V5, because the rock has no incentive to flatter you. That was my refrigerator. If you're planning a first trip outside, our gym-to-crag guide covers what else changes besides the numbers.

If grades are new to you because the whole sport is, start with your first 90 days instead — it covers what to buy, when, and what to climb.

What grades are actually good for

I'm not anti-grade. Grades are a genuinely useful tool for exactly three things:

• Planning a session. Warming up on V0–V2, working V4s, touching one V6 you have no business on — that's a structure, and the numbers make it plannable.
• Communicating with strangers. "There's a good V3 on the slab" tells someone across the gym something real in four words.
• Tracking direction over months. Not week to week. Months.

They're bad at: measuring your worth, comparing you to the person next to you, comparing two gyms, and telling you how good a climb is. Some of the best problems I've ever done were V1s.

How to use grades without losing your mind

• Track your grade at one gym, over months, not across gyms or weeks.
• When you travel, drop two grades on day one. Consider it a tax, not a demotion.
• Log the style, not just the number — "V4 crimpy overhang, failed" beats "V4 failed".
• Try problems below your grade with a specific goal (silent feet, no re-grabbing). This is where technique actually moves.
• Have one project above your grade at all times. Failing on purpose is a skill.
• Never, ever downgrade a problem out loud in a gym. It's the single most reliable way to be disliked.

Quick answers

What is a good bouldering grade for a beginner?

Most people climbing regularly land somewhere in V0 to V2 in their first couple of months, and V3–V4 within a year — with enormous variance depending on body, background and how often you go. Anyone who gives you a precise timeline is selling something.

Is 6A the same as V3?

Close, not identical. 6A sits roughly between V2 and V3, and 6A+ maps more cleanly to V3. The bottom of the Font scale compresses several V-grades into single numbers, which is why conversions get mushy down low.

Why is my gym's V4 easier than outdoor V4?

Because gym holds are designed to be held and rock isn't. Add consensus grading, decades of polish on popular problems, and no commercial pressure to flatter anyone, and outdoor grades run harder almost everywhere.

Do grades include the sit start?

Usually the grade describes the line as it's listed — and a sit start is typically a separate, harder listing. If a guidebook lists both, they'll be graded separately. If your gym tapes a start hold, that's the start; skipping it is a different problem.

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Grades are a map, and the map is drawn by tired people on a deadline. Use it to navigate. Don't use it to decide how you feel walking out the door. The best session I had this year, I sent nothing.

— The Phoenix, Co-founder, CRACX. We don't show our faces; here's why. If you're building out your first real kit, our gym bag checklist is the honest version.

Cover photo : Reza Rostampisheh / Unsplash. Graphics by CRACX.