ganak.appFitness Calculators
8 calculators · Updated Apr 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.
Popular in Fitness
One Rep Max Calculator
Estimate your One Rep Max (1RM) using Epley, Brzycki, and Lombardi formulas. Enter weight and reps to get your max and percentage charts for training zones.
Protein Intake Calculator
Calculate your optimal daily protein intake based on body weight, activity level, and fitness goals. Get recommendations for muscle building and fat loss.
Pace Calculator
Free running pace calculator with race splits, finish time predictions, and pace conversion. Calculate pace for 5K, 10K, half marathon, and marathon.
All Fitness Calculators
VO2 Max Calculator
Calculate your VO2 Max from Cooper run, 1.5-mile test, Rockport walk, heart rate, or race results (VDOT). Get fitness classification and predicted race times.
DOTS Calculator
Free DOTS calculator for powerlifting. Enter body weight, gender & total to get your DOTS score with optional age adjustment. Compare lifters across weight classes.
RPE Calculator
Free RPE calculator for powerlifting. Enter weight, reps, and RPE to estimate your 1RM, generate a full RPE chart, and plan backoff sets with RIR support.
Swim Pace Calculator
Free swim pace calculator. Calculate swimming pace per 100m or 100yd, convert yards to meters, get per-length splits for any pool size, and find your CSS training zones for triathlon and pool training.
Rucking Calorie Calculator
Free rucking calorie calculator using the Enhanced Pandolf equation. Enter body weight, pack weight, speed, and terrain to estimate calories burned while rucking.
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.