Free Fitness Calculators

Tools to optimize your training and nutrition. No signup required.

BMI Calculator

Calculate your Body Mass Index to assess if you are at a healthy weight.

Calculate your Total Daily Energy Expenditure to know how many calories you burn.

Calculate your body fat percentage using the US Navy method.

Find your optimal protein, carbs, and fat intake based on your goals.

Calculate how many calories to eat for sustainable weight loss.

Calculate your daily protein needs based on weight and goals.

Calculate how much water you should drink daily for optimal health.

Find your ideal body weight using multiple scientific formulas.

Estimate your one rep max from any weight and rep combination.

NuJourney combines these calculators with full workout, nutrition, and mental wellness tracking.