Pregnancy & Birth
Calculate your due date, track pregnancy week by week, estimate fetal weight and predict baby gender. Free pregnancy calculators for expecting mothers.
6 free calculators available
Free Pregnancy Due Date Calculator - When Is Your Baby Due?
Calculate your baby's due date free! Enter your last period date, conception date or ultrasound results. Track pregnancy week by week with trimester milestones — instant results using Naegele's Rule.
Pregnancy Week Calculator - Calculate Your Pregnancy Week
Calculate what week of pregnancy you are in. Enter your last menstrual period, conception date, or due date to find your current week, trimester, estimated baby size, and development milestones.
Chinese Gender Predictor - Ancient Chinese Baby Gender Calendar
Free Chinese Gender Predictor calculator using the ancient Chinese birth chart and lunar calendar. Predict baby gender based on mother's lunar age and conception month. Interactive tool with detailed explanations, Chinese zodiac information, scientific accuracy analysis, and comprehensive FAQs. Learn about the 700-year-old tradition, calculation methodology, and reliable medical alternatives. Entertainment purposes only - ~50% accuracy.
Fetal Weight Calculator - Estimate Baby Weight by Week
Calculate your baby's estimated weight during pregnancy by gestational week. Uses WHO growth charts and Hadlock formula for accurate fetal weight estimation with percentile comparison.
Pregnancy Weight Gain Calculator - Healthy Weight Tracker
Track your pregnancy weight gain with IOM/ACOG guidelines. Get personalized recommendations based on your pre-pregnancy BMI, current week, and whether you are expecting twins.
Conception Date Calculator - When Did I Conceive?
Calculate your estimated conception date based on your last menstrual period or due date. Find out when you conceived, your fertile window, and key pregnancy milestones.
Pregnancy & Birth Calculators
6 pregnancy & birth calculators in this category. Each one names the formula it uses and the guideline or study the formula came from — so you can verify the math instead of trusting a black box. Calculations run in your browser; nothing you enter is sent anywhere.
Pregnancy & birth numbers are screening tools, not diagnoses. They are useful for spotting outliers and tracking changes over time, less useful for telling you what to do about a borderline result. For that, take the number to a clinician who can read it in the context of your full history.
Available Calculators
- Free Pregnancy Due Date Calculator - When Is Your Baby Due? — Calculate your baby's due date free! Enter your last period date, conception date or ultrasound results. Track pregnancy week by week with trimester milestones — instant results using Naegele's Rule.
- Pregnancy Week Calculator - Calculate Your Pregnancy Week — Calculate what week of pregnancy you are in. Enter your last menstrual period, conception date, or due date to find your current week, trimester, estimated baby size, and development milestones.
- Chinese Gender Predictor - Ancient Chinese Baby Gender Calendar — Free Chinese Gender Predictor calculator using the ancient Chinese birth chart and lunar calendar. Predict baby gender based on mother's lunar age and conception month. Interactive tool with detailed explanations, Chinese zodiac information, scientific accuracy analysis, and comprehensive FAQs. Learn about the 700-year-old tradition, calculation methodology, and reliable medical alternatives. Entertainment purposes only - ~50% accuracy.
- Fetal Weight Calculator - Estimate Baby Weight by Week — Calculate your baby's estimated weight during pregnancy by gestational week. Uses WHO growth charts and Hadlock formula for accurate fetal weight estimation with percentile comparison.
- Pregnancy Weight Gain Calculator - Healthy Weight Tracker — Track your pregnancy weight gain with IOM/ACOG guidelines. Get personalized recommendations based on your pre-pregnancy BMI, current week, and whether you are expecting twins.
- Conception Date Calculator - When Did I Conceive? — Calculate your estimated conception date based on your last menstrual period or due date. Find out when you conceived, your fertile window, and key pregnancy milestones.