buncha/health & fitness/pregweight

Pregnancy Weight Tracker

Stays on this device. Setup + readings are saved to localStorage only — no account, no upload.

Units

One-time setup

Pre-pregnancy weight (lb)

Height — feet

Height — inches

Last menstrual period (LMP)

Anchors the gestational-week calculation. Estimate if exact date is fuzzy — your OB/midwife has the official date.

About the ranges. Recommended-gain bands come from the Institute of Medicine's 2009 guidance for SINGLETON pregnancies, keyed off pre-pregnancy BMI. First-trimester gain is small (~1–4 lbs) regardless of category; the steady weekly slope kicks in around week 14. Ranges are guidance for healthy populations — your OB or midwife may set different targets based on your history. Carrying twins? IOM 2009 has a separate table — talk to your provider, this tool isn't sized for multiples.

Read the guide

Pregnancy Weight Gain — What the IOM Bands Actually Mean

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About Pregnancy Weight Tracker

Log weight by gestational week against the IOM recommended range for your pre-pregnancy BMI. Stays on your device.

Everything happens on your device. Close the tab and it's gone.