DOTS Calculator

The DOTS score is a bodyweight-adjusted formula used in powerlifting to compare performance across different weight classes. If a 60 kg lifter totals 450 kg and a 120 kg lifter totals 700 kg, who is relatively stronger? DOTS answers that question by normalizing the total against bodyweight using a gender-specific polynomial formula.

DOTS was adopted by the International Powerlifting Federation (IPF) in 2019 as a replacement for the Wilks coefficient, which had been the standard since the 1990s. The formula uses modern competition data (2010-2018) to produce more accurate cross-weight-class comparisons. It's currently used by USAPL, USPA, and several other federations to determine best lifter awards.

The DOTS calculator uses a 4th-degree polynomial to compute a coefficient based on your bodyweight and gender. The formula multiplies your powerlifting total by this coefficient to produce a normalized score:

The constants a through e are different for men and women, reflecting the biological differences in the strength-to-bodyweight relationship between sexes. Lighter lifters receive a higher coefficient (multiplier), which accounts for the fact that heavier lifters can generally lift more in absolute terms.

All calculations are performed in kilograms. If you enter your weights in pounds, our calculator automatically converts to kg before applying the DOTS formula, then presents results in your preferred unit.

There are three main formulas used to compare powerlifting performance across weight classes: DOTS, Wilks, and IPF GL Points. The Wilks coefficient was the original standard, introduced in the 1990s using a 5th-degree polynomial. However, as competition standards evolved, the Wilks formula became increasingly inaccurate for extreme bodyweights.

DOTS was developed using more recent competition data and a 4th-degree polynomial, producing smoother coefficients. In the IPF's 2020 evaluation of scoring models, DOTS ranked second overall in accuracy. The IPF GL Points formula ranked first and is now the IPF's official formula for their competitions, while DOTS remains popular with USAPL, USPA, and many gym-level comparisons.

For most recreational and competitive lifters, DOTS provides an excellent way to track relative strength over time, compare yourself with training partners of different sizes, and gauge where you stand in the broader powerlifting community.