HealthCompass365 · Free tools
Health calculators & self-check tools
Explore straightforward estimates and educational resources. Each tool explains what the results can—and cannot—tell you.
THC urine detection windows
Compare published examples by cannabis use frequency. Not a prediction of when you will pass a drug test.
Explore THC windows →Daily calorie needs
Estimate resting energy expenditure and daily needs using adult inputs and activity factors.
Estimate TDEE →Calories burned by activity
Explore approximate exercise energy expenditure from standard MET values.
Calculate activity energy →Hydration symptom self-check
Review signs associated with dehydration and learn when symptoms need medical evaluation. Not a diagnosis.
Review symptoms →Caffeine half-life and bedtime calculator
Estimate how much caffeine from an energy drink or coffee may remain when you go to sleep.
Calculate caffeine remaining →Standard drinks & estimated BAC
Count standard drinks in beer, wine, tallboys or cocktails with a simple optional BAC estimate.
Count standard drinks →Using these tools responsibly
Calculator results are approximations, not clinical diagnoses or individually validated treatment plans. If you need personal medical advice, contact a qualified professional.
For further reading, see our health and wellness guides.