Health & Fitness Calculators

Health topics need careful context. Each calculator explains its limits, cites where formulas come from, and reminds you to talk with a qualified professional for medical decisions. See our About page for how we build and review tools.

BMI & Body Composition

10 tools

• BMI Calculator
• Anorexic BMI Calculator
• Body Fat Calculator
• Army Body Fat Calculator
• Body Surface Area Calculator
• Body Type Calculator
• Lean Body Mass Calculator
• Healthy Weight Calculator
• Ideal Weight Calculator
• Overweight Calculator

Metabolism & Calories

5 tools

• BMR Calculator
• TDEE Calculator
• Calorie Calculator
• Calories Burned Calculator
• Macro Calculator

Nutrition & Diet

6 tools

• Carbohydrate Calculator
• Fat Intake Calculator
• Protein Calculator
• Weight Watcher Points Calculator
• Chipotle Nutrition Calculator
• Starbucks Calorie Calculator

Fitness & Exercise

3 tools

• Target Heart Rate Calculator
• One Rep Max Calculator
• Pace Calculator

Pregnancy & Conception

7 tools

• Due Date Calculator
• Ovulation Calculator
• Conception Calculator
• Pregnancy Calculator
• Pregnancy Conception Calculator
• Pregnancy Weight Gain Calculator
• Period Calculator

Health & Medical

2 tools

• BAC Calculator
• GFR Calculator

These health calculators are for education and planning only. They do not diagnose conditions or replace advice from a doctor, registered dietitian, or other qualified professional.