Dates are estimates
Pregnancy calculators use common dating rules. Ultrasound, cycle history, or IVF details may change your official date.
Trimester calculator
See which trimester you are in.
Enter the first day of your last period to estimate your pregnancy week, trimester, due date, and next milestone.
⚡ Instant results🌼 No login📱 Mobile-first
One small answer at a time
Use the result as a planning note, then confirm important details with your care team.
Live toolUpdates instantly
Estimated due dateFebruary 15, 2027
Current weekWeek 1
TrimesterNot pregnant yet
Pregnancy startMay 11, 2026
Next milestoneYour first prenatal visit is usually the next big planning step.
Helpful context
Simple answers before you use the result.
Use it as a planning guide
Your result can help with appointments, checklists, baby names, registry timing, and weekly planning.
Ask when unsure
If a date or symptom feels confusing, your clinician is the best place to confirm what it means for you.
Sources and safety
BumpCalc uses common pregnancy dating rules for planning. For official dating, ultrasound timing, IVF details, symptoms, or urgent concerns, use your clinician's guidance.
Printable planner
The Calm Pregnancy Planning Pack
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