Track your weight with your healthy range in view

Tracking your weight helps you and your provider spot changes early. Prego shows your entries against the range that's right for your pre-pregnancy BMI.

Try the free weight gain calculator →

Prego weight tracker: a weight gain chart and logs from week 5 to week 21

How it works

  1. 1

    Set your starting point

    Enter your height and pre-pregnancy weight once, in kg or lb.

  2. 2

    Log once a week

    Add your weight each week. A gentle reminder helps you keep it up.

  3. 3

    See where you are

    Each entry shows against your recommended range, with an explanation of why weight changes happen.

  • kg or lb, switch any time
  • Recommended range based on your BMI
  • Ranges for one baby or twins
  • Weekly reminder

What parents say

★★★★★
“So cute and girly looking… simple, but also thorough, factual and helpful.”
maddyjohn, App Store review
★★★★★
“The best pregnancy app I've come across.”
Emily A Smith, App Store review

Questions, answered

How much weight should I gain in pregnancy?

It depends on your pre-pregnancy BMI: 25 to 35 lb (11.5 to 16 kg) is typical with a healthy BMI. Try our free weight gain calculator.

How often should I weigh myself?

Once a week, at the same time of day, is plenty. Daily changes are mostly water.

What if I gain weight suddenly?

Sudden gain, especially with swelling of your face or hands, a headache or vision changes, can be a sign of preeclampsia. Call your provider straight away.

See everything Prego does →

Get Prego for iPhone

Pregnancy Weight Tracker, your baby's size by fruit, a checklist for every trimester and more, private on your iPhone.

Download on the App Store