# When I enter values in INPUT Formulas calculate in OutPut

1. ## When I enter values in INPUT Formulas calculate in OutPut

Hi,

I have received a screenshot, I want to know when I put values in INPUT, how value come in OUTPUT, I mean what is the formula, please check the screenshot.  Register To Reply

2. ## Re: When I enter values in INPUT Formulas calculate in OutPut

Probably using Brzycki formula for calculating 1RM.

1RM ≈ w/(1.0278-0.0278*r)

Where...
w is the amount of weight used (factor for the formula and unit does not matter).
r is the number of repetition performed.

So...
1RM ≈ 100/(1.0278-0.0278*10)
1RM ≈ 133.3689

Edit: See wiki for more details on 1RM calculation formulas.
https://en.wikipedia.org/wiki/One-repetition_maximum

Also if you want more accurate result use...
1RM =w/(37/36-(1/36*r))  Register To Reply

3. ## Re: When I enter values in INPUT Formulas calculate in OutPut

Thank you Mr CK76, you are genius.  Register To Reply

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