Free tools
Everything you need, all in one place
Built with clinical accuracy and designed to feel supportive, not clinical. No sign-up needed.
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Due date calculator
Find your estimated due date
📊
Weight gain calculator
Supportive, personalized guidance
🍼
Baby size by week
See how your baby is growing
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Tool 1
Due date calculator
Enter the first day of your last period and we'll work out your estimated due date, how far along you are, and what trimester you're in.
This is the most common way to date a pregnancy
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Enter your last period date
to see your results
to see your results
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Tool 2
Pregnancy weight gain calculator
Weight gain in pregnancy looks different for everyone. This tool gives you personalized guidance based on your pre-pregnancy BMI, framed with care and never judgment.
Feet
Inches
Log in to save your weight journey to your profile
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Fill in your details
to see your personalized guidance
to see your personalized guidance
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Tool 3
Baby size by week
From a tiny poppy seed to a full-term baby, see how your little one is growing — week by week, in a way that actually makes sense.
Week
20
Second trimester
Drag the slider to explore your baby's growth week by week
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Banana
Your baby is about the size of a banana
Baby's hand
24mm
Baby's foot
28mm
Length (crown to heel)
10.1 in
Approximate weight
10.6 oz
Pregnancy progress44%
Halfway there! Your baby can hear sounds, and those little kicks are very real.
🍼 Track your pregnancy week by week — free →