One Rep Max Calculator

Calculate your Body Mass Index (BMI) to see if you're underweight, normal, overweight, or obese.

Estimate your daily calorie needs for weight loss, maintenance, or muscle gain.

Determine your body fat percentage using multiple measurement methods.

Calculate your Basal Metabolic Rate (BMR) to know how many calories you burn at rest.

Find your ideal weight range based on height, gender, and body frame.

Calculate your running or walking pace based on time and distance.

Calculate your body fat percentage according to U.S. Army standards.

Find your lean body mass (LBM) and understand your body composition.

Check your healthy weight range based on height and other health factors.

Estimate how many calories you burn for various activities and exercises.

Find your optimal target heart rate zones for effective workouts.