Everyday health tools
Choose a calculator, enter a few numbers and get a rough answer. Nothing here diagnoses a condition or replaces a clinician.
Due Date Calculator
Add 280 days to the first day of your last period.
Open calculator →Pregnancy Week Calculator
See estimated pregnancy weeks and days from LMP.
Open calculator →Conception Window (Rough)
See a broad possible conception date window.
Open calculator →Water Intake Calculator
Estimate a daily water range from body weight.
Open calculator →BMI Calculator
Calculate BMI with metric or feet and inches.
Open calculator →Ideal Weight Range (Rough)
See a broad healthy-weight range for your height.
Open calculator →Daily Calorie Estimate
Estimate maintenance calories with Mifflin-St Jeor.
Open calculator →Calorie Deficit Calculator
Compare gentle 300 and 500 calorie reductions.
Open calculator →Protein Estimate
Multiply body weight by your chosen protein level.
Open calculator →Sleep Cycle Calculator
Count back 90-minute cycles from wake time.
Open calculator →Bedtime from Wake Time
Find a bedtime for your preferred sleep length.
Open calculator →Hours Slept Calculator
Measure time between sleep and wake times.
Open calculator →Age from Date of Birth
Calculate current age in years, months and days.
Open calculator →Heart Rate Zones (Rough)
Estimate exercise zones using 220 minus age.
Open calculator →Steps to Kilometres
Convert steps to distance with adjustable stride.
Open calculator →Kilometres to Steps
Convert walking distance into rough step count.
Open calculator →Navy Body Fat (Rough)
Estimate body fat from tape measurements.
Open calculator →Waist-to-Height Ratio
Divide waist size by height in matching units.
Open calculator →Pregnancy Weight Gain Info
View common rough ranges by pregnancy week.
Open calculator →Percent Weight Change
Calculate percentage gained or lost between weights.
Open calculator →