Pregnancy Weight Gain Calculator
Recommended gain by BMI and week.
Enter your values
ⓘ Live results
Results
- Recommended total gain
- 11.5–16 kg
- Pre-pregnancy BMI
- 23.1
- Expected gain by week 24
- 5.3–7.7 kg
- Gained so far
- 7 kg
- Status
- On track
Quick answer
Recommended gain depends on pre-pregnancy BMI: 25–35 lb for normal weight, less if overweight.
How to use the Pregnancy Weight Gain Calculator
- 1Enter your pre-pregnancy weight and height.
- 2Enter your current week of pregnancy.
- 3Enter your current weight.
Worked example
Using the values the calculator loads with:
Inputs
- Pre-pregnancy weight63 kg
- Height165 cm
- Current week24
- Current weight70 kg
Results
- Recommended total gain11.5–16 kg
- Pre-pregnancy BMI23.1
- Expected gain by week 245.3–7.7 kg
- Gained so far7 kg
- StatusOn track
Frequently asked questions
Do twins change this?
Yes — recommended gain is roughly 17–25 kg for twins at normal BMI.
Is gaining slowly a problem?
Discuss any consistent deviation with your midwife or doctor.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.