Body Mass Index
A quick screen of weight against height. Useful as a starting point, not a diagnosis.
BMI Calculator
Enter your height and weight to see where your body mass index sits.
Body mass index is a rough screening figure. It does not account for muscle mass, and it is not a diagnosis. Ask a healthcare professional what it means for you.
Basal Metabolic Rate
Roughly what your body burns at complete rest over a day.
BMR Calculator
Estimate the energy your body uses at rest, then across a typical day.
Energy estimates are a starting point only. Your real needs depend on body composition, medication and health conditions — check with a professional before setting targets.
Daily Water Intake
A practical target based on your weight and how much you train.
Water Intake Calculator
Find a daily water target based on your weight and how much you train.
Hydration needs shift with climate, activity and health. Treat this as a guide, and speak to a healthcare professional if you have a condition that affects fluid intake.
Build Small Habits That Support Consistency
Use the habit tracker, workout timer, guided breathing exercise and wellness challenge tools.
FitCalc Wellness Toolkit
Build healthy routines with private tools that work directly in your browser.
Today’s Healthy Habits
Your checks stay on this device and reset for each new day.
Workout Interval Timer
Set work, rest, and rounds for HIIT, Tabata, or any interval workout.
Guided Breathing
Use a short visual breathing session for relaxation and focus.
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Healthy Challenge
Choose a simple challenge and mark one completed day at a time.
Start today and build your streak.
Wellness tools provide general support only. They do not diagnose, treat, or replace professional medical care. Progress is stored locally in this browser.