Health and Fitness Tools
Everyday wellness estimates for BMI, calorie needs, protein, walking calories, hydration and due dates.
BMI CalculatorCalculate body mass index from height and weight, with the standard adult BMI category.Calorie Needs CalculatorEstimate daily maintenance calories using the Mifflin-St Jeor equation and an activity multiplier.Protein Target CalculatorEstimate a daily protein target from body weight and grams per kilogram.Walking Calorie CalculatorEstimate walking calories from weight, time and pace intensity.Hydration CalculatorEstimate a simple daily water target from body weight and exercise time.Pregnancy Due Date CalculatorEstimate a due date from the first day of the last menstrual period using the common 280-day method.
Useful reads
Supporting articles and glossary pages make the tools easier to understand and give this topic a stronger internal link structure.
Calorie Deficit and Maintenance Guide
Research-backed article on calorie targets, activity, protein and diet planning.
Hydration Math and Daily Water Planning
Long-form guide to water estimates, exercise, bottle refills and when generic targets fall short.
Pregnancy Due Date Math
Careful guide to 280-day estimates, ultrasound dating and related date tools.
Health Estimate Playbook
How to treat BMI, calorie, protein and hydration numbers responsibly.
BMI and Calorie Glossary
BMR, TDEE, BMI and calorie estimate definitions.
Fitness Math Glossary
METs, pace, protein targets and activity estimates.