Finger Strength Benchmarks: What's Normal at Each Grade?
“How strong should my fingers be for my grade?” is one of the most common questions in climbing training. The honest answer is less tidy than most online charts suggest. Research does show a clear link between finger strength and climbing grade. It does not give you a single number that “belongs” to 7a or 7C.
This article summarises what peer-reviewed studies actually show, why published values differ so much, and how to use benchmarks without being misled by them. If you want the broader idea of strength ceilings first, read Strength Ceilings & Objective Benchmarks. This article zooms in on the research behind finger-strength numbers.
1. What the research consistently finds
Across very different study designs, one pattern holds: maximal finger strength rises with climbing ability, and it is one of the strongest single physical predictors of grade.
- Vereide et al. (2022) tested 78 male sport climbers in a half-crimp isometric pull on a 23 mm edge. Peak force correlated strongly with self-reported grade (r ≈ 0.73), and average force over two seconds even more so (r ≈ 0.77–0.79).
- Söderqvist et al. (2024) tested six grip types in male boulderers. Half crimp on the strong hand had the highest validity and explained about 57% of the variance in bouldering grade on its own. Adding front-three drag on the weaker hand raised that to 66%.
- Giles et al. (2021) studied 55 experienced female climbers. After adjusting for body size and other descriptors, finger strength was associated with ability, explaining about 53% of the variance in bouldering grade and 45% in sport grade.
- Laffaye et al. (2016) compared 41 novice, skilled and elite climbers. Finger grip strength was the only strength measure that differed across all three groups, and climbing ability was linked more to climbing-specific strength than to general strength such as bench press.
Two things follow from this. Finger strength matters a lot. And roughly half of the difference between climbers is not explained by it. Technique, tactics, power, endurance and experience fill the rest.
2. How big are the differences between levels?
Vereide et al. grouped climbers using the IRCRA scale, the standard grading system for climbing research (Draper et al., 2016):
| Group (IRCRA) | Approx. French sport grade | Peak force (N, mean ± SD) |
|---|---|---|
| Intermediate (10–17) | 5+ to 7a | 353 ± 105 |
| Advanced (18–23) | 7a to 8a | 494 ± 122 |
| Elite (24–27) | 8a+ to 8c | 690 ± 155 |
Each step up was associated with roughly 40% more peak force. That is a large gap, and it is the core reason finger strength is such a useful diagnostic.
But look at the standard deviations. They are wide, and the ranges of neighbouring groups overlap. Some advanced climbers pulled less than some intermediates. Some elite climbers pulled less than some advanced climbers. A group average is not a requirement for an individual.
Also note what these numbers are: forces measured through a floor-anchored load cell in one specific test position. You cannot compare them directly to “bodyweight + 20 kg on a 20 mm edge” from a hangboard. That leads to the biggest problem with benchmarks.
3. Why benchmark numbers disagree
If you search for finger-strength standards, you will find values that seem to contradict each other. Usually they are not wrong. They are measuring different things.
Edge depth
A few millimetres change the result considerably. Most research uses 20–23 mm edges, partly because a 2025 systematic review of reliability studies found fixed-depth edges in that range gave the most stable results (Pérez-Cordero et al., 2025). See How Hold Size Changes Tendon Load for the mechanics.
Grip position
Half crimp, open hand and full crimp produce different forces. In Söderqvist et al. the same climbers produced different values, and different predictive strength, across six grips.
Test type
A hang with added weight, a pull on a load cell, and a one-arm test do not produce comparable numbers. Duration matters too: a 5-second and a 10-second maximum are different tests.
Absolute vs relative values
Some sources report raw force, others % of bodyweight, others added weight. Relative values make more sense for comparing climbers of different size. Absolute values are fine for tracking yourself over time.
Who was tested
Most studies are small (often 30–80 participants), mostly male, and grade is usually self-reported. Female data sets are scarcer. Online calculators built on large self-reported data sets can be useful as a rough reference, but they are not peer-reviewed and nobody checked how each person tested.
The practical rule: only compare numbers produced by the same protocol. More on this in Why Numbers Lie.
4. What a benchmark can and cannot tell you
A finger-strength benchmark is a probability tool, not a verdict.
It can tell you:
- whether your finger strength is clearly below what is typical for climbers at your level, which makes it a likely limiter;
- whether it is clearly above, in which case your next gains are more likely to come from technique, power or endurance;
- whether a training block actually changed your capacity, if you retest with the same protocol.
It cannot tell you:
- what grade you “should” climb. Correlation at group level does not predict an individual;
- whether your tendons are ready for more load. Strength and tissue tolerance adapt at different speeds (see How Tendons Really Adapt);
- anything about slopers, pinches, power or endurance, unless you test those separately.
5. How to use benchmarks sensibly
Step 1: Pick one protocol and keep it
Choose a fixed edge (around 20 mm), one grip (half crimp is the best-supported option), one duration, and the same warm-up every time. Measuring Finger Strength Properly covers each variable in detail. If you want a step-by-step version, follow the Finger Testing Protocol.
Step 2: Express it relative to bodyweight
For comparison with others, convert your result to a ratio: total load (bodyweight + added weight, or measured force) divided by bodyweight. Track the absolute number as well, so a change in body mass does not hide or exaggerate progress.
Step 3: Compare against a reference that used the same test
A comparison is only meaningful if the reference group was tested the same way. Mixing a hangboard result with a load-cell study, or a 7-second hang with a 10-second hang, gives you noise.
Step 4: Read the gap, not the number
Small differences mean little. Day-to-day variation of a few percent is normal. A large and consistent gap, across repeated tests, is the useful signal.
Step 5: Retest on a schedule
Every 4–6 weeks, or at the end of a training block, is enough. Testing weekly mostly measures how rested you are.
6. Measuring without guesswork
The weakest point of most self-testing is consistency: different boards, different grips, estimated loads. Two options reduce that error.
A force sensor. A dynamometer such as the Tindeq Progressor 200 shows peak force directly. It works most easily with a portable edge clipped between the sensor and a fixed anchor, rather than on a hangboard. For a comparison of sensor options, see Tindeq vs ClimBro Mini.
A standardised testing station. Max Climbing testing stations are available in climbing gyms. Every climber tests on the same fixed edge and setup, so results are comparable between sessions and between climbers. The station measures four maximal lifts: a 20 mm crimp edge, a 6 cm pinch block, an 80 mm rolling bar handle, and a three-rep max weighted pull-up. The edge, pinch block and rolling bar are tested one hand at a time. The station is also the basis of the data-driven option in our climbing diagnostics. The same testing station can be mounted at home or brought to your gym.
Observations from Max Climbing testing
To give a rough sense of scale, the table below shows the best single-hand lift on the 20 mm edge for climbers tested on Max Climbing stations in Belgian climbing gyms up to October 2026, grouped by self-reported bouldering grade.
| Bouldering grade | Climbers tested | Median lift (kg) | Middle 50% (kg) | Median % of bodyweight |
|---|---|---|---|---|
| V0–V2 (Font 4–5) | 6 | 34 | 28–37 | 44% |
| V3–V4 (Font 5+–6a) | 13 | 40 | 34–45 | 60% |
| V5–V6 (Font 6a+–6b+) | 32 | 44 | 39–51 | 67% |
| V7–V8 (Font 6c–7a) | 49 | 52 | 48–59 | 79% |
| V9–V10 (Font 7a+–7b+) | 18 | 57 | 53–69 | 89% |
Read these numbers with care. They are observations, not standards: 118 climbers in total, grades are self-reported, most testers are men (23 of the 118 are women), and the lowest and highest groups are small. Groups above V10 had too few climbers to report. Because this is a one-hand lift, the values cannot be compared with the load-cell numbers in section 2 or with a two-hand hang on a hangboard. The overall pattern matches the research — higher grades lift more on average, with wide overlap between neighbouring groups — but the specific values need more data before they can serve as a reference. If you test on a station yourself, compare your result with your own earlier tests first.
7. A note on safety
Maximal testing loads the A2 and A4 pulleys heavily. Only test when you are fully warmed up, rested, and free of finger pain. If you have a current or recent finger injury, skip maximal tests until a physio has cleared you for full load.
Putting it all together
- Finger strength is strongly linked to grade: it explains roughly half of the difference between climbers in current studies.
- Average differences between ability groups are large (around 40% per step in one study), but individuals overlap a lot.
- Published benchmarks only apply if you test the same way: same edge, grip, duration and units.
- Most data comes from small, mostly male samples with self-reported grades. Treat any table as a rough reference, not a standard.
- The most reliable benchmark is your own number, measured the same way over time.
Next step
Get a clean baseline first. Test with the Finger Testing Protocol or on a testing station in your gym, then run the diagnostic to see whether crimp strength is actually your limiter. If it is, the crimp max strength page shows how to train it.
References
- Draper N, Giles D, Schöffl V, et al. (2016). Comparative grading scales, statistical analyses, climber descriptors and ability grouping: International Rock Climbing Research Association position statement. Sports Technology.
- Giles D, Barnes K, Taylor N, et al. (2021). Anthropometry and performance characteristics of recreational advanced to elite female rock climbers. Journal of Sports Sciences, 39(1), 48–56.
- Laffaye G, Levernier G, Collin JM. (2016). Determinant factors in climbing ability: influence of strength, anthropometry, and neuromuscular fatigue. Scandinavian Journal of Medicine & Science in Sports, 26(10), 1151–1159.
- Pérez-Cordero J, Jerez-Mayorga D, Rodríguez-Perea Á, Soto García D. (2025). Reliability of finger strength assessment methods in climbing: a systematic review. Frontiers in Sports and Active Living, 7.
- Söderqvist K, Identeg F, Zimmerman J, et al. (2024). Validity and reliability of finger-strength testing in 6 common grip techniques for the assessment of bouldering ability in men. International Journal of Sports Physiology and Performance, 19(3), 290–298.
- Vereide V, Andersen V, Hermans E, et al. (2022). Differences in upper-body peak force and rate of force development in male intermediate, advanced, and elite sport climbers. Frontiers in Sports and Active Living, 4, 888061.