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Fitness & Training Calculators

One-rep max, VO2 max, running pace, calories burned, protein needs — train smarter.

CalcHub › Fitness & Training
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💪 Strength Training

🏋️ One-Rep Max (1RM) Calculator

Estimate your maximum single-rep lift using multiple proven formulas. Works for bench, squat, deadlift, and more.

🫁 VO2 Max Estimator

Estimate your aerobic fitness level using the 1.5-mile run test. Used to assess cardiovascular health.

🏃 Running Pace Calculator

Calculate pace, finish time, or distance. Works for 5K, 10K, half marathon, and marathon training.

🔥 Calories Burned by Exercise

Estimate calories burned during common exercises using MET values and your body weight.

🥩 Daily Protein Calculator

Calculate optimal daily protein intake based on your weight, activity level, and fitness goal.

😴 Sleep Cycle Calculator

Find the best wake-up time based on 90-minute sleep cycles to wake feeling refreshed.

❤️‍🔥 Training Zones Calculator

Calculate your 5 training heart rate zones for optimal cardio, fat burn, and performance.

🏆 Wilks Score Calculator

Compare strength across different body weights. Used in powerlifting to rank lifters fairly.