Weight Adjustment Calculator

The Concept2 RowErg is a useful tool for rowing coaches because it provides a controlled, measurable way to compare athletes’ potential. However, it is important that coaches take into account the body weight of their athletes. This is where the Weight Adjustment Formula comes in. Many coaches have been using this formula over the years but it required a love of math and a pretty powerful calculator. Now it’s easy with our Online Weight Adjustment Calculator.

How to Use

Enter body weight and either the time (for a distance piece) or the distance (for a timed piece) and then click Calculate.

Weight Adjustment Calculator

Enter your body weight and either the time (for a distance piece) or distance (for a timed piece) and then click Calculate.

Body Weight

or
Please enter a weight

Workout Time

: :

Workout Distance


0
Adjusted Weight Factor
Adjusted Time
Adjusted Distance

Important: Your adjusted score cannot be entered into the Concept2 Online Ranking. Ranking results must be raw times and distances only.

Understanding the Calculator

Generally, a larger, heavier athlete is capable of producing more power than their smaller teammates. In many cases this results in the larger person scoring better on the erg.

This does not tell the whole story, because in on-water rowing, greater body weight submerges the boat deeper in the water. This creates drag that must be overcome by the power of the rowers. The heavier the rower, the more drag on the boat, and the more power that rower will have to produce to be equal to their lighter teammate. The erg does not penalize the heavier rower in this way, so a heavier rower may appear to have a higher potential than they really have when it is time to get into the boat.

Don’t underestimate a lighter athlete—it’s the power-to-body-weight ratio that’s important.

Your weight-adjusted score will be a pretty good estimate of your potential speed in an eight. If all eight rowers have the same adjusted 2k score, then that eight should be capable of rowing that speed for a 2k race on the water—given perfect conditions and near perfect rowing effectiveness (nobody rows perfectly).

IMPORTANT: Your adjusted score cannot be entered into the Concept2 Online Ranking. Ranking results must be raw times and distances only.

Formula Used

Wf = [body weight in lbs / 270] raised to the power .222
Corrected time = Wf x actual time (seconds)
Corrected distance = actual distance / Wf