Pregnancy Weight Gain Calculator

IOM-recommended weight gain by BMI category and gestational age.

100% private — no uploads Free & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use Pregnancy Weight Gain Calculator

Follow these steps — everything happens instantly in your browser.

  1. 1

    Step 1. Pick your pre-pregnancy BMI category.

  2. 2

    Step 2. Enter the current week of pregnancy.

  3. 3

    Step 3. Choose singleton or twin pregnancy.

  4. 4

    Step 4. Read the recommended gain range for this week and total pregnancy.

Why use this tool

Frequently asked questions

Everything you might want to know about pregnancy weight gain calculator.

Related tools

Pregnancy Due Date Calculator

Estimated due date via Naegele's rule or IVF/ultrasound.

Open
Popular

Calorie Calculator

Daily calorie needs using Mifflin-St Jeor — for loss, maintenance and gain.

Open

Macro Calculator

Protein, carbs and fat targets from your daily calories.

Open

Menstrual Cycle Calculator

Next 6 periods, ovulation dates and fertile windows.

Open