Test the complete FitNFO system
The calculator directory is one part of FitNFO. You can also test the Plan Builder, offline Food Lookup, Photo Coach and Assistant on the live demo hub.
30 fitness & nutrition calculators
Every calculator below is live. Search, pick one and get an instant, formula-based result.
Body composition
BMI Calculator
Enter your values and calculate instantly.
Body Fat Percentage Calculator
Enter your values and calculate instantly.
Lean Body Mass Calculator
Enter your values and calculate instantly.
Ideal Weight Calculator
Enter your values and calculate instantly.
Waist-to-Hip Ratio Calculator
Enter your values and calculate instantly.
Waist-to-Height Ratio Calculator
Enter your values and calculate instantly.
Body Surface Area Calculator
Enter your values and calculate instantly.
Body Frame Size Calculator
Enter your values and calculate instantly.
Energy & calories
BMR Calculator
Enter your values and calculate instantly.
TDEE Calculator
Enter your values and calculate instantly.
Calorie Calculator
Enter your values and calculate instantly.
Maintenance Calorie Calculator
Enter your values and calculate instantly.
Weight Loss Calculator
Enter your values and calculate instantly.
Weight Gain Calculator
Enter your values and calculate instantly.
Calorie Burn Calculator
Enter your values and calculate instantly.
Train smarter with real numbersNutrition & hydration
Macro Calculator
Enter your values and calculate instantly.
Protein Intake Calculator
Enter your values and calculate instantly.
Daily Carb Calculator
Enter your values and calculate instantly.
Sugar Intake Calculator
Enter your values and calculate instantly.
Water Intake Calculator
Enter your values and calculate instantly.
Pregnancy Weight Gain Calculator
Enter your values and calculate instantly.
Heart & cardio
Heart Rate Zone Calculator
Enter your values and calculate instantly.
Target Heart Rate Calculator
Enter your values and calculate instantly.
VO2 Max Calculator
Enter your values and calculate instantly.
Fitness Age Calculator
Enter your values and calculate instantly.
Running & steps
Calories Burned Running Calculator
Enter your values and calculate instantly.
Calories Burned Walking Calculator
Enter your values and calculate instantly.
Steps to Calories Calculator
Enter your values and calculate instantly.
Pace Calculator
Enter your values and calculate instantly.
Strength
One Rep Max Calculator
Enter your values and calculate instantly.
Train smarter with real numbersShow one calculator, or all of them
Use the directory shortcode for a searchable hub, or embed a single calculator inside a blog post, landing page or sidebar.
[fitnfo_calculators][fitnfo_calculator type="bmi-calculator"][fitnfo_calculator type="heart-rate-zone-calculator"]Want 70 or 130 calculators?
Pro and Enterprise expand the library with advanced nutrition, powerlifting, body-composition and endurance tools.