PreMami｜Pregnancy Assistant

Professional pregnancy & fertility calculators that guide moms-to-be through every stage. Use our due-date, ovulation and more tools for a worry-free journey.

Calculate Due Date Now View All Tools

Quick Due-Date Calculator

Enter the first day of your last menstrual period (LMP) to get your estimated due date.

Pregnancy Tips

Track Dates Accurately

Record the first day of your LMP carefully—it's the key to every calculation.

Regular Check-ups

Follow your doctor's schedule to keep both mom and baby healthy.

Balanced Diet

Take folic acid, iron and other essentials while avoiding forbidden foods.

All Pregnancy Tools

Due Date Calculator

Get your EDD with one click

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IVF Due Date

Precise calculation for IVF moms

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Pregnancy Calendar

Daily baby changes & tips

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Week Calculator

Find out current gestation

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Fetal Weight

Estimate baby's current weight

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Weight Gain

Healthy range by pre-pregnancy BMI

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Pregnancy BMI

Assess weight status & advice

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Fetal Movement

12-hour log with alerts

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Contraction Timer

One-tap duration & interval

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Ovulation Day

Find your 6 most fertile days

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Conception Date

Reverse-calculate best intercourse days

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Safe Period

Natural birth-control guide

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Pregnancy Test

Earliest day for urine / blood test

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Check-up Schedule

Timeline & items for each visit

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Postpartum Recovery

Uterus, weight & menstruation timeline

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Baby Blood Type

Predict from parents' blood / genes

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Baby Name Tool

Smart suggestions by gender, elements & strokes

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Pregnancy Wiki

One-stop knowledge from TTC to delivery

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About PreMami Pregnancy Assistant

PreMami is a professional platform of pregnancy & fertility calculators, providing comprehensive guidance for moms-to-be.

We are committed to offering accurate, practical and easy-to-use tools to help you enjoy every day of pregnancy and welcome a healthy baby. All calculators are professionally verified for accuracy.

Professional & Accurate
Simple & Easy
Full Coverage
Free Forever

Frequently Asked Questions

Our calculator is based on the standard Naegele rule …

Enter your average cycle length and LMP …

It depends on your pre-pregnancy BMI …

We add 266 days minus embryo age to the transfer date …

After 28 weeks at least 10 distinct movements within 12 h …

Start when you feel regular painful contractions …

Eat small frequent meals, avoid empty stomach …

Limit caffeine to ≤ 200 mg per day (≈ 1 medium Americano) …

Avoid jumping, sudden twisting and supine exercises after the first trimester …

No evidence that diagnostic-level scans are harmful …

Start 3 months before conception and continue until week 12 of pregnancy …

It is the most direct signal of baby's current well-being …