⚠️ Medical Disclaimer: These tools are for educational purposes only and are not medical advice. Please consult your family doctor or healthcare provider for any health concerns.
Free Tool

Baby Size Comparator. Week by Week

How big is your baby this week? Slide to your pregnancy week and instantly see your baby compared to a fruit or vegetable. With weight, length, and what's developing right now. Perfect for sharing with family!

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In Canadian homes, The size comparison through pregnancy is a fun way to track baby development between provincial healthcare scan visits. From poppy seed to watermelon. This comparator shows your babys size at each week using familiar Canadian grocery comparisons. We follow Society of Obstetricians and Gynaecologists of Canada (SOGC) guidance for fetal growth and align with provincial prenatal care standards.

🍓 Fruits and objects familiar in Canada

We compare to fruits and objects you find at Loblaws, Sobeys, Save On Foods, Real Canadian Superstore, or Costco: poppy seed, blueberry, raspberry, plum, lime, avocado, mango, papaya, butternut squash, pumpkin, watermelon. Plus household items like a Canadian quarter, toonie, golf ball, hockey puck. Standard SOGC biometry charts back the measurements. Your sonographer and obstetrician or midwife use Canadian standard ultrasound biometry at the dating and detailed scans.

🤱 Baby Size Comparator. Week by Week

See how big your baby is this week. Compared to fruits and vegetables you know 🍋🍉

Week 4 Week 40
WEEK 20
🍌
Banana
🗓️ Quick Week Navigation
Step-by-Step Guide

How to use this tool

Drag the slider to your current pregnancy week and instantly see your baby's size comparison, weight, length and development highlights.

  1. 1
    Drag the slider to your pregnancy week

    The slider goes from week 4 (implantation) to week 40 (due date). Drag it to your current week to see your baby's size comparison. If you are not sure of your week, use the Due Date Calculator first.

  2. 2
    See the fruit comparison and stats

    The large emoji and name shows what fruit or vegetable your baby is roughly the same size as this week. The three boxes below show the exact week number, average baby length in centimetres, and average weight in grams or kilograms.

  3. 3
    Read the development description

    Below the stats is a paragraph describing what is happening inside your womb this specific week. What organs are forming, what your baby can sense, and what major milestones are being reached.

  4. 4
    Use the quick navigation buttons

    Tap any of the quick navigation buttons (12 weeks, 16 weeks, 20 weeks etc.) to jump to key milestones. Share a screenshot on WhatsApp with the message "My baby is a mango this week!". Friends and family love it.

💡 Take a weekly photo with the fruit

A fun pregnancy tradition: take a photo every week holding the fruit your baby is compared to. By the end of 40 weeks, you have a beautiful collection showing your whole pregnancy journey from poppy seed to watermelon. This makes a wonderful memory book.

⚠️ These are average sizes only

All measurements shown are averages for that gestational age. Your baby's actual size may be slightly larger or smaller. Both are completely normal. Small or large ultrasound measurements only become a concern if they are significantly outside the normal range across multiple scans. Always discuss ultrasound measurements with your doctor.

FAQ

Frequently Asked Questions

In the first 20 weeks, babies are measured from crown (top of head) to rump (bottom). Called CRL (Crown-Rump Length) because legs are curled up. After 20 weeks, babies are measured from crown to heel. Called CHL. This is why the measurements shown seem to jump significantly around week 20-21. It is a change in measurement method, not sudden growth.
The average birth weight for Canadian newborns is approximately 2.8 kg, which is slightly lower than the global average of 3.3 kg. Low birth weight (under 2.5 kg) is more common in Canada due to maternal nutrition and socioeconomic factors. A healthy Canadian newborn typically weighs between 2.5 kg and 3.5 kg. Weight below 2.5 kg at birth requires paediatric monitoring.
No. Ultrasound measurements have a margin of error of ±1-2 weeks. Your baby may simply be slightly smaller or larger than average. Which is perfectly normal. Growth concern arises when measurements are consistently below the 10th percentile across multiple scans, or when growth slows significantly between two scans. Your doctor will flag any actual concerns.
Most first-time mothers feel baby movements (called quickening) between 18-25 weeks. Experienced mothers often feel movements earlier, around 16-18 weeks, because they recognise the sensation. Baby movements feel like gentle flutters, bubbles, or a light tapping at first. By 28 weeks, you should feel at least 10 movements in 2 hours daily. Contact your doctor if movements reduce significantly.
Healthcare in Canada

How prenatal scans actually work in Canada

Canadian pediatric care runs through provincial public health. Your health card covers everything: ER visits, family doctor appointments, walk in clinics. OHIP in Ontario. RAMQ in Quebec. MSP in British Columbia. Each province slightly different but the principle is the same. Pediatric specialty hospitals serve as referral centres. SickKids in Toronto. BC Childrens in Vancouver. CHEO in Ottawa. Sainte Justine in Montreal. The 811 health line is your first call for after hours triage. Available in most provinces. Many Canadians do not have a family doctor right now (the shortage is real). Walk in clinics and Telus Health Virtual Care fill the gap. Wait times are the main frustration with the system.

📞 Emergency contacts in Canada

In Canada, call 811 for free 24/7 health advice (available in most provinces). For emergencies, call 911. Pediatric specialty hospitals (SickKids in Toronto, BC Children, CHEO in Ottawa, Sainte-Justine in Montreal, Stollery in Edmonton) have after hours services. Your provincial health card covers all of this.

Context for Canadian families

What Canadian moms actually deal with

Canadian parents are generally pragmatic and reasonably trusting of the medical system. Wait times frustrate everyone. The family doctor shortage frustrates everyone more. Cultural norm is to call 811 first, then decide between walk in clinic, family doctor, or ER based on what they tell you. Winter respiratory illness season is brutal in Canada. November through March, intense circulation of RSV, flu, and COVID. Babies under 6 months are at highest risk for complications. The RSV prophylaxis program (nirsevimab, brand Beyfortus) is now standard. Free through provincial programs in most provinces. Ask your family doctor or call 811 to confirm eligibility for your baby.

More FAQs for Canada

Canadian-specific questions

Standard Canadian prenatal care includes a dating scan in the first trimester (around 8 to 12 weeks) and a detailed scan around 18 to 22 weeks. Provincial coverage applies via your health card. Additional scans are ordered if medically necessary. Some provinces and pregnancies include a third trimester growth scan. NIPT (non invasive prenatal testing) coverage varies by province: covered fully in some provinces for high risk pregnancies, partial coverage in others, around 600 CAD if paid privately. Private 3D and 4D bonding scans are widely available, typically 75 to 200 CAD.
Canadian prenatal care can be provided by family doctors, obstetricians, or midwives. All three are covered by provincial health insurance. Family doctor care is most common for low risk pregnancies. Obstetricians manage higher risk pregnancies and surgical deliveries. Midwives provide continuity of care and home birth options (also covered by provincial insurance in most provinces). Some Canadian women have difficulty finding any provider due to the doctor shortage. If you cannot find a provider, contact your local public health unit or call 811 for referral assistance.
The detailed scan at 18 to 22 weeks can determine sex in most cases. Sonographer policy varies; ask your provider beforehand if they will tell you. NIPT (non invasive prenatal testing) from 10 weeks can determine sex very accurately; covered by provincial health insurance in many provinces for high risk pregnancies, otherwise around 600 CAD out of pocket. Private gender scans from 15 to 16 weeks at clinics like UltraSound Studios are available across Canada for 75 to 150 CAD. Some Canadian parents choose to be surprised at birth.
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