Health & Wellness Calculators
Science-backed calculators for daily hydration, nutrition, and wellness tracking. All calculations run entirely client-side — no data is collected or transmitted.
Available Health Calculators
Water Intake Calculator
Calculate your recommended daily water intake by body weight. Get results in fl oz, liters, ml, and glasses. Supports imperial and metric inputs.
Bench Press Calculator
Calculate your bench press 1 rep max from any reps and weight. Get training percentages at 70%, 80%, and 90% of your 1RM. Uses the Epley formula.
Burpee Calorie Calculator
Calculate calories burned doing burpees by weight and rep count. Find how many burpees you need to hit a calorie burn target. Based on MET 7.5 formula.
Batting Average Calculator
Calculate baseball batting average (BA) from hits and at-bats. Find hits needed to reach a target average, or at-bats from a known hit total and target average.
Strength Calculator
Calculate your strength-to-weight ratio and relative strength level for any lift. Supports lbs and kg. Find the target lift weight for any strength goal.
DOTS Calculator (Powerlifting Score)
Calculate your powerlifting DOTS score from squat, bench press, and deadlift. A widely-used relative-strength coefficient, supporting male and female formulas in kg.
Wilks Calculator (Powerlifting Coefficient)
Calculate your Wilks powerlifting score from your squat, bench, and deadlift total. The classic relative strength formula for comparing lifters across weight classes.
Age Grade Calculator (Running)
Calculate your running age grade percentage for 5K, 10K, and marathon. Uses WMA-based age factors to compare your time to the world standard for your age group.
Max Heart Rate Calculator
Calculate your maximum heart rate by age using the Tanaka formula. Get all 5 heart rate zones, Zone 2 range, and personalized zones using the Karvonen heart rate reserve method.
Peptide Calculator
Convert vial strength, water volume, and syringe units into concentration and injection volume. Reconstitution, reverse, target-concentration, and vial-longevity modes.