FitWise
Find the few fitness actions that drive most of your results
Unlike generic fitness calculators, FitWise uses AI to identify YOUR highest-leverage actions based on the Pareto Principle—eliminating overwhelm and helping you focus on what actually moves the needle.
Free Fitness Calculators
All basic calculators are 100% free. Try AI-powered sample reports (7-day trial) or upgrade to Pro for full AI analysis.
AI TDEE Calculator
Calculate your Total Daily Energy Expenditure and discover what to focus on
→AI Macro Calculator
Get your optimal protein, carbs, and fat targets based on your goals
→AI BMI Calculator
Calculate your Body Mass Index and get personalized fitness insights
→AI Body Fat Calculator
Measure body fat percentage using the US Navy Method
→AI Calorie Deficit Calculator
Plan your weight loss journey with the perfect calorie deficit
→Why FitWise?
🎯 Leverage-Based Analysis
Our AI identifies YOUR highest-leverage actions. Sometimes it's 10% of actions driving 80% of results, sometimes 5% driving 70%—we find what matters for YOU.
🤖 AI-Powered Insights
Get personalized analysis that tells you exactly what to prioritize for YOUR body and goals.
📊 Science-Based
All calculations use proven formulas (Mifflin-St Jeor, Navy Method, etc.) trusted by professionals.
💯 Always Free
Every calculator is fully functional forever. Pro tier adds AI analysis, not features.
Ready to Focus on What Matters?
Start with any calculator above, or upgrade to Pro for AI-powered Pareto analysis on every result.