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Online Pregnancy Weight Gain Calculator
Calculate your healthy pregnancy weight gain range based on pre-pregnancy BMI and current week of pregnancy using medically reviewed IOM guidelines.
| RESULT | |
|---|---|
| Recommended Weight Gain | 172.7 - 177.7 lbs |
| Recommended weight range when delivering | 190.5 - 200.3 lbs |
| Your BMI before pregnancy | 22.6 kg/m2 |
0 week
5 week
10 week
15 week
20 week
25 week
30 week
35 week
40 week
| Week | Recommended weight range | Recommended Weight Gain |
|---|---|---|
| Week 1 | 165.3 - 165.3 lbs | 0.0 - 0.0 lbs |
| Week 2 | 165.44 - 165.75 lbs | 0.09 - 0.40 lbs |
| Week 3 | 165.5 - 166.0 lbs | 0.2 - 0.7 lbs |
| Week 4 | 165.6 - 166.4 lbs | 0.3 - 1.1 lbs |
| Week 5 | 165.7 - 166.8 lbs | 0.4 - 1.5 lbs |
| Week 6 | 165.8 - 167.1 lbs | 0.5 - 1.8 lbs |
| Week 7 | 165.9 - 167.5 lbs | 0.6 - 2.2 lbs |
| Week 8 | 165.9 - 167.9 lbs | 0.6 - 2.6 lbs |
| Week 9 | 166.0 - 168.2 lbs | 0.7 - 2.9 lbs |
| Week 10 | 166.1 - 168.6 lbs | 0.8 - 3.3 lbs |
| Week 11 | 166.2 - 169.0 lbs | 0.9 - 3.7 lbs |
| Week 12 | 166.3 - 169.3 lbs | 1.0 - 4.0 lbs |
| Week 13 | 166.4 - 169.7 lbs | 1.1 - 4.4 lbs |
| Week 14 | 167.3 - 170.9 lbs | 2.0 - 5.5 lbs |
| Week 15 | 168.2 - 172.0 lbs | 2.9 - 6.7 lbs |
| Week 16 | 169.1 - 173.1 lbs | 3.8 - 7.8 lbs |
| Week 17 | 170.0 - 174.3 lbs | 4.7 - 8.9 lbs |
| Week 18 | 170.9 - 175.4 lbs | 5.6 - 10.1 lbs |
| Week 19 | 171.8 - 176.5 lbs | 6.4 - 11.2 lbs |
| Week 20 | 172.7 - 177.7 lbs | 7.3 - 12.3 lbs |
| Week 21 | 173.6 - 178.8 lbs | 8.2 - 13.4 lbs |
| Week 22 | 174.5 - 179.9 lbs | 9.1 - 14.6 lbs |
| Week 23 | 175.3 - 181.0 lbs | 10.0 - 15.7 lbs |
| Week 24 | 176.2 - 182.2 lbs | 10.9 - 16.8 lbs |
| Week 25 | 177.1 - 183.3 lbs | 11.8 - 18.0 lbs |
| Week 26 | 178.0 - 184.4 lbs | 12.7 - 19.1 lbs |
| Week 27 | 178.9 - 185.6 lbs | 13.6 - 20.2 lbs |
| Week 28 | 179.8 - 186.7 lbs | 14.4 - 21.4 lbs |
| Week 29 | 180.7 - 187.8 lbs | 15.3 - 22.5 lbs |
| Week 30 | 181.6 - 189.0 lbs | 16.2 - 23.6 lbs |
| Week 31 | 182.5 - 190.1 lbs | 17.1 - 24.7 lbs |
| Week 32 | 183.4 - 191.2 lbs | 18.0 - 25.9 lbs |
| Week 33 | 184.2 - 192.3 lbs | 18.9 - 27.0 lbs |
| Week 34 | 185.1 - 193.5 lbs | 19.8 - 28.1 lbs |
| Week 35 | 186.0 - 194.6 lbs | 20.7 - 29.3 lbs |
| Week 36 | 186.9 - 195.7 lbs | 21.6 - 30.4 lbs |
| Week 37 | 187.8 - 196.9 lbs | 22.5 - 31.5 lbs |
| Week 38 | 188.7 - 198.0 lbs | 23.4 - 32.6 lbs |
| Week 39 | 189.6 - 199.1 lbs | 24.2 - 33.8 lbs |
| Week 40 | 190.5 - 200.3 lbs | 25.1 - 34.9 lbs |
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What Is This Tool?
This calculator estimates the recommended weight gain range during pregnancy according to your pre-pregnancy BMI and current week of pregnancy. It helps monitor healthy weight progression based on established medical guidelines.
How to Use This Tool?
- Enter your pre-pregnancy BMI value to indicate your weight status.
- Input the current week of your pregnancy.
- Click the calculate button to see your recommended healthy weight gain range.
- Use the results to track your pregnancy weight gain progression effectively.
Key Features
- Calculates weight gain recommendations based on pre-pregnancy BMI according to IOM guidelines.
- Incorporates current week of pregnancy to provide progressive weight gain ranges.
- Uses medically reviewed formulas for accurate guidance.
- Easy to use with simple input fields for BMI and pregnancy week.
- Browser-based and accessible on multiple devices.
Examples
- A woman with a normal pre-pregnancy BMI should aim for a total weight gain between 25 and 35 pounds during pregnancy.
- Adjustments in recommended gain ranges will reflect your current pregnancy week, guiding safe progression.
Common Use Cases
- Helping expectant mothers track healthy pregnancy weight gain.
- Supporting healthcare providers in prenatal care monitoring.
- Providing guidance to maintain recommended weight gain based on individual BMI status.
Tips & Best Practices
- Enter accurate pre-pregnancy BMI and current pregnancy week for the best results.
- Use the calculator regularly to monitor weight gain progression throughout pregnancy.
- Combine calculator results with professional medical advice for comprehensive care.
- Avoid self-diagnosis and rely on this tool as guidance rather than a definitive measure.
Limitations
- The calculator does not account for multiple pregnancies such as twins or triplets.
- It does not consider pregnancy complications that may affect weight gain.
- Results are based on general guidelines and may not apply to every individual case.
Frequently Asked Questions
- What variables do I need to enter for this calculator?
- You need to provide your pre-pregnancy BMI and the current week of your pregnancy to calculate the healthy weight gain range.
- Is this calculator suitable for multiple pregnancies?
- No, the tool does not factor in multiple pregnancies like twins or triplets and is intended for single pregnancies.
- How precise are the weight gain recommendations?
- The recommendations are based on medically reviewed IOM guidelines to ensure accurate and safe guidance.
Key Terminology
- Pre-pregnancy BMI
- A calculated value representing weight status before conception, used to determine healthy weight gain ranges during pregnancy.
- IOM Guidelines
- Recommended ranges for weight gain during pregnancy established by the Institute of Medicine based on maternal health data.
- Week of Pregnancy
- The number of weeks elapsed since the start of the last menstrual period, used to track pregnancy progression.