Hangboard Rep Max Calculator

This is a set of rep max calculators for hangboarding based off of an old r/climbharder thread, specifically this comment:

The comparison for isometrics that I used in Overcoming Gravity is 1 repetition = 2s isometric hold. Once you know the approximate repetitions, you can plug into a 1 RM calculator

This gives a pretty solid comparison, and it's based off a lot of my experience and coaching gymnastics/parkour for stuff like back lever, front lever, planche, iron cross, etc.

A couple use notes:

1. 2"RM is the maximal weight you can hang for 2 seconds, just like 1RM is the maximal weight with which you can do 1 rep.
2. If you are doing no-hangs, just use the weight itself; if you're doing normal hangs, make sure to include bodyweight (total weight= bodyweight + weight added).
3. Sometimes these equations will spit out answers that don't really make sense, e.g. negative hang times. Checking 'sensible outputs' mitigates that as follows:

• no negative hang times; outputs 0 instead.
  • unfortunately some of the formulas will still output ludicrous hang times with submaximal weight.
• when calculating hang times:
  • if the weight is more than your 2"RM, output 0 seconds.
  • if the weight is your 2"RM, output 2".
• when calculating 2"RM: if you hang 2" with a weight, output that entered weight.

sensible outputs raw outputs

Equations