A gentler place to start than an all-or-nothing workout
A practical way to think about starting activity: choose something manageable, notice how it feels, and build gradually rather than chase a calculator number.
3 min read · Open guideHealth & family
Make space for a better-informed conversation.
Explore pregnancy dates and everyday health estimates, understand their limits, and prepare useful questions for a qualified professional.
A useful place to start
Choose the estimate that answers your question.
Check the date, measurement units and assumptions before calculating.
Read the result alongside its limitations and relevant guide.
THE TOOLKIT
5 tools · Local processingChoose the right tool for the job.
Health & Family
Pregnancy Due Date
Estimate a due date from the first day of your last period.
Open tool Health & FamilyPregnancy Week
Estimate gestational weeks and days from a due date.
Open tool Health & FamilyOvulation Estimate
Estimate a possible ovulation window for regular cycles.
Open tool Health & FamilyAdult BMI
Calculate adult body mass index from height and weight.
Open tool Health & FamilyResting Calorie Estimate
Estimate adult resting energy needs using Mifflin–St Jeor.
Open toolConnect the steps.
Planning a pregnancy timeline? Start with a due-date estimate, use Pregnancy Week to explore a date, then read the month-by-month planning companion.
GO A LITTLE DEEPER
All guides ↗Guides for the next step.
Your BMI is one number. What is missing from the picture?
Understand why BMI is a screening estimate and how to choose a useful next question without turning a number into a diagnosis.
3 min read · Open guideYour calorie estimate is not automatically your food target
A resting-energy number and a whole-day estimate describe different assumptions. Neither alone can prescribe what you should eat.
3 min read · Open guideYour pregnancy, month by month: a practical planning guide
A gentle nine-month planning companion, with clear dating limits, questions for your care team, and links to trusted pregnancy information.
4 min read · Open guideWhat a pregnancy due-date estimate means
Understand the assumptions behind a last-period estimate and why clinical dating matters.
1 min read · Open guideKnow the limits.
These are educational estimates, not diagnoses or a substitute for care. Pregnancy dates may be revised by a clinician. No independent clinical review is claimed.
How we explain methods and sources →