Training Science4 min read

Finger Strength Calculator

Written by Alex Voit|July 18, 2026
Finger strength scale from V4 to V10 with a you-are-here marker at 1.45 times body weight, inside the typical range for V8.

See how your max hang sits against the climbers who already climb the grade you are training for. It helps you tell whether your fingers are strong enough to get there.

Measure it like this

20 mm edge · 10 seconds · half-crimp · two arms

How to measure it, and why the protocol matters

Warm up properly first: twenty minutes of easy climbing, then work up in a few steps with two to three minutes rest between hangs. The heaviest load you can hold for the full 10 seconds is your number. A cold max hang is how people get hurt.

Half-crimp means the middle knuckle bent to about ninety degrees, thumb off, last joint flat rather than curled over. If it collapses into a drag or rolls into a full crimp, the hang is over and that attempt does not count.

A different edge, duration or grip is not comparable to these ranges, and there is no conversion factor between protocols.

Power Company state the edge and the duration. They do not publish the grip or whether it was one arm or two, so that part is our assumption. It is the weakest joint on this page. If their climbers hung open-handed and you half-crimp, you are not quite comparing like with like. We are telling you because the alternative is pretending we know.

Skip it if your fingers, elbows or shoulders hurt right now, if you are coming back from a finger injury, or if you are under sixteen and still growing.

Sex

Leave at 0 for a bodyweight hang. Use a negative number if you hang assisted, for example -10. A pulley takes off a fixed amount, a band does not, so an assisted number is a rough one. And if you need help to hold 10 seconds on a 20 mm edge, the useful answer is not on this page. Go and climb for a year, then come back to it.

Discipline
Grade system

Redpoint, not onsight, and not the one from five years ago. Your onsight is usually two to three letter grades below your redpoint, and putting the wrong number here will tell you your fingers are weak when they are not.

The grade you are working towards. Your hang gets compared against the climbers who are already there.

Your result shows up here

Fill in the hang and hit Calculate. Nothing is sent anywhere - the maths runs in your browser and nothing is stored.

What your result actually tells you

It measures one narrow thing, in isolation: how much you can hold in one grip, on two arms, for ten seconds, hanging still. It says nothing about catching a hold fast, holding slopers or pinches, or lasting to the top of a route. And even the strength it does show has to travel - through your shoulders, elbows and back - into an actual move. Plenty of climbers have it on the board and lose it on the wall, because it never got wired into the climbing.

So the tool answers one question, and it is not “what grade can I climb”. It is what grade your fingers are already strong enough for. If they are not there yet, that is your ceiling for now. If they are strong enough and you still are not climbing it, the honest question becomes why - because it is not your fingers.

  • Below their range. Fingers are probably one of the things in the way. Probably, because they are only ever part of it. Under a year or two of climbing the answer is still not a hangboard - it is more climbing. But if you have the mileage and you have sat at a grade for a long time, that is exactly when finger work earns a dedicated block.
  • Inside their range. You already hang what climbers at that grade hang, so fingers are not what is stopping you. Read that narrowly: it does not mean you can climb it. The range describes who is there, not what it takes to get there. Keep hanging in a maintenance dose so you do not lose it, and put the real work somewhere else.
  • Above their range. The strength is there in isolation, so heavy hangs are not the answer - another block will not move your grade. The real question is where it leaks out on the wall: shoulders, elbows, back, the links that carry finger force into a move, or endurance that fades before the top. That is climbing and movement, not more hanging.

Take the full quiz, get the full program.

Your grade, your schedule, your history, what hurts - the quiz maps it and a coach builds a program around it. From $16.

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