Fitness Calculators
Free calculators for training and body metrics, each with an article that explains the math and where it falls short.
CalculatorPOPBMI CalculatorBMI CalculatorEnter your height and weight to see your BMI category, from underweight to obesity classes.Try itCalculatorPOP1RM Calculator1RM CalculatorEstimate your one-rep max from any working set so you can program lifts with confidence.Try itCalculatorPOPApe Index CalculatorApe Index CalculatorCompare your wingspan to your height and see where you land, positive, neutral, or negative.Try itCalculatorPOPGrip Strength CalculatorGrip Strength CalculatorCheck your grip strength against age and sex norms to spot a flag before it shows up elsewhere.Try itCalculatorPOPProgressive Overload CalculatorProgressive Overload CalculatorPlan your next training block with a clear week-by-week progressive overload schedule.Try itCalculatorPOPStrength Level CalculatorStrength Level CalculatorSee how your lifts stack up against other people at your bodyweight, from beginner to elite.Try itCalculatorPOPHiking Water CalculatorHiking Water CalculatorWork out how much water to pack for a hike based on duration, temperature, and trail intensity, using REI and American Hiking Society guidelines.Try itCalculatorPOPBarbell Plate CalculatorBarbell Plate CalculatorWork out exactly which plates to load per side for any target barbell weight, in kilograms or pounds, with any standard bar.Try itCalculatorPOPCreatine Dosage CalculatorCreatine Dosage CalculatorCalculate your creatine loading and maintenance dose by body weight, based on the ISSN position stand.Try it