Personalized Fitness Plans Based on Your Body Metrics

Transform your fitness journey with scientifically-crafted workout plans tailored specifically to your height, weight, and goals. No more generic routines - get a plan that fits your unique body.

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Create Your Custom Fitness Plan

Tell us about yourself and we'll generate a personalized workout plan in seconds

Height

Weight

Age

Gender

Male Female

Fitness Goal

Why Choose Fit By Size?

Science-backed approach to personalized fitness

Body-Specific Plans

Every workout is tailored to your unique body metrics, ensuring optimal results and safety for your physique.

Scientific Approach

Our algorithms are based on exercise physiology research and biomechanics principles for maximum effectiveness.

Instant Results

Get your personalized fitness plan in seconds, not weeks. Start your transformation journey immediately.

Success Stories

Real results from real people

Sarah Johnson

Lost 25 lbs in 4 months

"The personalized plan based on my body metrics was exactly what I needed. Finally, a program that worked for MY body type!"

Mike Chen

Gained 15 lbs muscle

"As a shorter guy, generic workout plans never worked. This customized approach helped me build muscle efficiently."

Emma Rodriguez

Improved overall fitness

"The plan adapted perfectly to my height and weight. I've never felt stronger or more confident in my fitness routine."

50,000+

Plans Generated

95%

Success Rate

4.9/5

User Rating