Fitness Toolkit

Connected, privacy-first fitness calculators for body metrics, calorie planning, adaptive TDEE and strength. Your measurements stay in your browser.

One profile across eight fitness tools

Use shared age, height, weight, activity and optional body-fat details across compatible body and energy tools. The hub shows BMI, resting energy and maintenance energy, identifies whether maintenance comes from an equation or adaptive TDEE, and links to strength planning without uploading measurements.

Choose the right calculator

  1. Start with BMI or waist-to-height when you want body-metric context.
  2. Use the TDEE planner for an equation-based calorie and macro starting point.
  3. Move to adaptive TDEE after logging real intake and weight, then reuse a qualified estimate across the overview, calorie planner and macro calculator.

Estimates, privacy and safety

Fitness equations and log-derived results are planning estimates, not diagnoses. Results expose their assumptions and safety limits, while profile data stays in browser storage under the persistence option you choose.