Calculators and utilities

Practical Tools for Understanding Your Health

Three wellness tools with stated assumptions, built for readers in the United States.

Metabolic Biomarker Index

Enter any of four common lab values, in the units shown, to see plain-language context. Ranges differ between laboratories, so this is a learning aid and not an interpretation of your results.

Circadian Sleep Window Estimator

Choose a wake-up time and a sleep duration to see a suggested bedtime, including when the schedule crosses midnight.

Hydration Planner

Estimate a general fluid planning range from body weight, activity length and intensity. Assumptions are listed with the result.

Looking for the Quick Vitality Score? It is on the home page.