FitSmart brings together the tools people actually need to train well: precise health calculators for BMI, BMR, TDEE and macros, structured workout plans for every level, evidence-based nutrition guidance, and an AI coach that ties it together. Everything is free and runs in your browser.
Health calculators
BMI — body mass index against standard weight ranges
BMR — resting calorie burn, the baseline before activity
TDEE — total daily calories burned including activity level, with a calorie target for your goal
Body fat % — the US Navy tape-measurement method
Lean body mass and ideal weight for your height
Daily protein target and a full macro split (protein, carbs, fat)
Daily water intake based on your weight and activity level
Training & nutrition
Structured workout plans for beginner through advanced
Evidence-based nutrition guides, not fad-diet advice
An AI coach that adapts plans to your numbers
Training programs
30-Day Kickstart Challenge — build the training habit
Lean & Strong — fat loss combined with muscle gain
Hypertrophy Builder — structured muscle-gain program
Home Shred — a fat-loss program with no gym equipment