ganak.appFitness Calculators
3 calculators · Updated Mar 2026
Optimize your training with calculators for one-rep max estimation and daily protein intake. Get personalized targets based on your body weight and fitness goals.
One-rep max prediction using multiple proven formulas · Protein intake recommendation based on activity level and goals
Popular in Fitness
One Rep Max Calculator
Estimate your One Rep Max (1RM) for any exercise using proven strength training formulas (Epley, Brzycki, Lombardi). Calculate maximum weight you can lift for one repetition based on submaximal lifts. Essential for powerlifting, bodybuilding, strength programming, and progressive overload training. Includes percentage charts for training zones.
Protein Intake Calculator
Calculate your optimal daily protein intake based on body weight, activity level, and fitness goals. Get personalized recommendations for muscle building, fat loss, maintenance, or body recomposition with per-meal distribution and food sources.
Pace Calculator
Free running pace calculator with race splits, finish time predictions, and pace conversion. Calculate pace for 5K, 10K, half marathon, marathon and any distance. Get per-mile and per-km splits instantly with treadmill speed equivalents.
Why Use Fitness Calculators?
Training without targets is just exercise. These calculators help you set evidence-based goals — estimate your one-rep max to program progressive overload, calculate your protein needs based on lean body mass and training intensity, and track your running pace to hit your race targets.