A simple, free and educational estimate

This calculator is intended for adults aged 18 and over. Results are estimates for educational purposes and do not replace advice from a doctor or registered dietitian.

Your answers stay in your browser during this calculation and are not saved by default.

Choose your units

Enter your height and weight using the system you prefer.

Beta version: formulas, safety thresholds and nutrition wording should receive professional review before any clinical or medical use. FlexiLab remains a wellness and educational tool.