Pregnancy Weight Gain Calculator
Fill in the values and the answer updates as you type.
How the Pregnancy Weight Gain Calculator works
Recommended totals for a single baby are based on pre-pregnancy BMI (weight in kg ÷ height in m²): 12.5 to 18 kg if underweight, 11.5 to 16 kg for normal weight, 7 to 11.5 kg if overweight, and 5 to 9 kg with obesity. Gain is normally slow in the first trimester and steadier later. Twins and other multiples have different targets, so follow your own care provider advice. Example: with Weight before pregnancy 60 kg, Height 165 cm, and Current weight 66 kg, the result is Recommended total gain = 11.5 to 16 kg; Pre-pregnancy BMI = 22; BMI category = Normal weight.
Inputs and results
The Pregnancy Weight Gain Calculator takes 3 inputs and gives 4 results.
What you enter
- Weight before pregnancy (kg) — starts at 60.
- Height (cm) — starts at 165.
- Current weight (kg) — starts at 66.
What you get
- Recommended total gain
- Pre-pregnancy BMI
- BMI category
- Weight gained so far (kg)
Example: Pregnancy Weight Gain Calculator with the starting values
With weight before pregnancy 60 kg, height 165 cm and current weight 66 kg, the calculator returns:
| Recommended total gain | 11.5 to 16 kg |
|---|---|
| Pre-pregnancy BMI | 22 |
| BMI category | Normal weight |
| Weight gained so far (kg) | 6 |
Change any value above and the results update straight away.
Pregnancy Weight Gain Calculator FAQ
How do I use the Pregnancy Weight Gain Calculator?
Enter weight before pregnancy, height and current weight in the fields, then read recommended total gain, pre-pregnancy bmi, bmi category and weight gained so far (kg) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Pregnancy Weight Gain Calculator calculate?
Recommended total weight gain in pregnancy from pre-pregnancy BMI. It returns recommended total gain, pre-pregnancy bmi, bmi category and weight gained so far (kg) from the 3 values you provide.
What values does the Pregnancy Weight Gain Calculator start with?
It opens with weight before pregnancy 60 kg, height 165 cm and current weight 66 kg so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Pregnancy Weight Gain Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Pregnancy Weight Gain Calculator for medical or health decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm medical or health decisions with a qualified professional. See the Disclaimer for more.