RNT Fitness
Summer Shred 2026

How Much Could You
Lose by Summer?

Enter your current weight and see your personalised 12-week countdown — the exact system behind 4,000+ transformations.

Used by executives, doctors, founders & busy parents worldwide.

Please enter a weight between 80 and 400 lbs.

Free. Instant. No email required.

This calculator assumes you are over 15% body fat as a man, or 20% body fat as a woman. This is not medical guidance — it is designed for individuals who want to maximise a lean body composition, aiming for 1% bodyweight loss per week.

© RNT Fitness 2026 · rntfitness.com · @rnt_fitness

This calculator assumes you are over 15% body fat as a man, or 20% body fat as a woman. This is not medical guidance — it is designed for individuals who want to maximise a lean body composition, aiming for 1% bodyweight loss per week.