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Health & Fitness Calculators

Free online calculators for health metrics, nutrition, fitness tracking, and wellness planning.

Calculate your Body Mass Index and see which weight category you fall into.

Calculate your Basal Metabolic Rate using multiple scientific formulas.

Calculate daily calorie needs for weight loss, maintenance, or gain.

Estimate body fat percentage using the Navy tape measurement method.

Calculate ideal weight using Devine, Robinson, Miller, and Hamwi formulas.

Calculate running pace, speed, and race split times for any distance.

Calculate estimated due date, current week, and pregnancy milestones.

Calculate daily hydration needs based on weight, activity, and health factors.

Estimate your 1RM using multiple proven formulas for strength training.

Calculate heart rate training zones for exercise based on age and fitness level.

Find optimal bedtime and wake times based on 90-minute sleep cycles.

Estimate blood alcohol content based on drinks, weight, and time elapsed.