GAA Calculator (Goals Against Average)
Goals Against Average (GAA) is the standard stat used to judge a goaltender’s defensive performance in hockey, normalizing raw goals allowed against actual playing time so goalies who played different amounts of ice time can still be fairly…
Elo Calculator
The Elo rating system estimates relative skill between two competitors and updates their ratings after every match based on the result and how surprising that result was. Originally designed for chess, Elo and its close variants now power skill ratings…
Wilks Calculator
The Wilks score adjusts a powerlifter’s total (squat, bench press, and deadlift combined) for bodyweight, producing a single number that lets lifters of completely different sizes be fairly compared. Without this kind of adjustment, heavier lifters…
One-Rep Max Calculator
One-rep max (1RM) is the heaviest weight you can lift for a single complete repetition of a given exercise, and it’s the standard reference point for programming strength training — most percentage-based lifting programs are built directly around a…
Bench Press Calculator – Find Your 1RM
Testing a true 1-rep max on the bench press carries real fatigue and injury risk, which is exactly why most lifters instead estimate it from a lighter, safer submaximal set using a well-established formula. This calculator uses the Epley formula, one of…
5/3/1 Calculator
Jim Wendler’s 5/3/1 program is one of the most enduringly popular structured strength training systems, built around a deliberately conservative “training max” and a repeating three-week percentage wave rather than chasing a true 1-rep…
Swim Time Converter
Competitive swimming is contested in three distinct pool configurations — short course yards (25-yard pools, standard in US college and high school swimming), short course meters (25-meter pools), and long course meters (50-meter pools, the Olympic…
Hull Speed Calculator
Every displacement-hull boat — from a small sailing dinghy to a large trawler — has a theoretical maximum efficient speed determined almost entirely by its waterline length, a limit boat designers and sailors call “hull speed.” This…
Fish Weight Calculator
Weighing a fish on an actual scale, especially a big one intended for release, isn’t always practical or good for the fish’s health, which is exactly why anglers have long relied on a simple length-and-girth formula to estimate weight…
DIY Sports Drink Calculator
Commercial sports drinks are formulated around two key numbers — carbohydrate concentration and sodium concentration — and both can be replicated fairly closely at home with plain sugar, table salt, and water for a fraction of the cost. This calculator…