Pregnancy Weight Gain Reference (IOM)
The clinical IOM gain ranges personalised to pre-pregnancy BMI and week — shown as neutral ranges, never targets.
These are population monitoring ranges clinicians use, not grades — twin pregnancies, hyperemesis, and individual physiology all shift them legitimately. Gain that suddenly accelerates (especially with swelling or headaches) is a same-week call to your provider, not a chart exercise. Never restrict eating in pregnancy on your own initiative.
Formula
For general information only. Pregnancy and infant care decisions must be guided by your treating clinician or midwife — always defer to their assessment.
The clinical IOM gain ranges personalised to pre-pregnancy BMI and week — shown as neutral ranges, never targets. The Pregnancy Weight Gain Reference (IOM) is a free, private pregnancy weight gain tool — every result computes instantly in your browser with no sign-up and no data upload.
About Pregnancy Weight Gain Reference (IOM)
These are population monitoring ranges clinicians use, not grades — twin pregnancies, hyperemesis, and individual physiology all shift them legitimately. It applies IOM 2009: total gain by pre-pregnancy BMI; ~0.5–2 kg in T1, near-linear after. Use the Pregnancy Weight Gain Reference (IOM) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Pregnancy Weight Gain Reference (IOM)
- 1Enter your details in the Pregnancy Weight Gain Reference (IOM) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Pregnancy Weight Gain Reference (IOM)?
- ✓Instant pregnancy weight gain result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (IOM/NRC — Weight Gain During Pregnancy: Reexamining the Guidelines, 2009)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Pregnancy Weight Gain Reference (IOM) work?+
These are population monitoring ranges clinicians use, not grades — twin pregnancies, hyperemesis, and individual physiology all shift them legitimately. The calculation uses the formula: IOM 2009: total gain by pre-pregnancy BMI; ~0.5–2 kg in T1, near-linear after. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Pregnancy Weight Gain Reference (IOM) accurate, and what is it based on?+
The method is traceable to authoritative sources: IOM/NRC — Weight Gain During Pregnancy: Reexamining the Guidelines, 2009. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Pregnancy Weight Gain Reference (IOM) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is informational only. Always defer to your treating clinician or midwife for pregnancy and infant care decisions.
What can I use the Pregnancy Weight Gain Reference (IOM) for?+
It's commonly used for pregnancy weight gain, iom weight gain, weight gain by week pregnancy. The clinical IOM gain ranges personalised to pre-pregnancy BMI and week — shown as neutral ranges, never targets.
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