Pregnancy Weight Gain Calculator
See the IOM-recommended total weight gain range based on your pre-pregnancy BMI and how far along you are.
Scan to open on your phone
Point your phone camera at the code to open this tool.
See the IOM-recommended total weight gain range based on your pre-pregnancy BMI and how far along you are.
How to use Pregnancy Weight Gain Calculator
- Open the toolNo signup and nothing to install; it works as soon as the page loads.
- Set “Pre-pregnancy BMI”
- Set “Current week”
- Read the resultChange any input and the result is recalculated immediately.
Worked example with the defaults
- RECOMMENDED TOTAL GAIN · For a pre-pregnancy BMI of 22.0
- 11.5–16 kg
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Pregnancy Weight Gain Calculator only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- What if I am gaining more slowly?
- Some weeks plateau. If your overall trend is inside the band and baby is tracking well on scans, no need to panic over a quiet week.