Surrogate BMI calculator
Find your BMI, then see how it reads against the ranges programs screen on: under 35 for surrogates, 18 to 30 for egg donors. A number, not a verdict.
Enter height and weight
BMI calculator
Check your BMI against program screening ranges
Enter height and weight to see your BMI, the standard adult band it falls in, and how it reads against the published Patriot Conceptions screening range. BMI is one screening input — never the whole decision.
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Enter measurements
Program read
What BMI does and does not decide
- BMI is a screening filter, not a health verdict. It does not account for muscle mass, body composition, or where weight is carried.
- Individual IVF clinics set their own limits and some are stricter than the agency range. The clinic your match uses has the final say.
- Pregnancy history, blood pressure, prior deliveries, and medication history weigh at least as heavily as BMI in a screening decision.
- A BMI near the edge of the range is worth applying with — the medical review looks at the whole picture.
This calculator is a planning aid, not medical advice, and not an eligibility decision. Final screening is completed by the IVF clinic and the program medical team.
One number, in context
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BMI is an entry filter, not the verdict
It is checked early because it is cheap to check. A BMI under 35 moves an application forward; it does not by itself qualify anyone, and everything else in the medical file still gets reviewed.
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The clinic can be stricter than the agency
Individual IVF clinics set their own transfer criteria. A carrier who clears the agency range can still be asked by a specific clinic to reach a lower number before transfer.
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Pregnancy history usually matters more
At least one prior healthy birth, an uncomplicated delivery record, and stable blood pressure carry more weight in a screening decision than a BMI a point or two either side of the line.
A number above 35 is not a closed door
The calculator shows the weight that lands on BMI 35 at your height, so the distance is concrete instead of vague. Applicants who reach the screening range and re-apply are considered on the same terms as anyone else. If your BMI is close to the line, apply now rather than waiting: screening looks at the whole medical picture, and a coordinator can tell you where you stand faster than a calculator can.
Related
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Surrogate requirements
The full baseline: age, BMI under 35, prior birth, lifestyle, and residency.
Open surrogate requirements -
Surrogate compensation guide
Once you clear screening, review the governed pay bands and benefits.
Open surrogate compensation guide -
Egg donor requirements
Donor screening criteria, including the 18–30 BMI range.
Open egg donor requirements
BMI and surrogacy questions
What BMI do you need to be a surrogate?
Patriot Conceptions screens surrogate applicants at a BMI under 35. That is the agency threshold; the IVF clinic your match uses sets its own limit and some clinics are stricter. A BMI close to the line is still worth applying with, because the medical review looks at pregnancy history, blood pressure, and delivery history alongside the number.
How is BMI calculated?
BMI is weight in kilograms divided by height in meters squared. In US units it is 703 multiplied by weight in pounds, divided by height in inches squared. This calculator does the conversion either way, so you can enter feet and inches with pounds, or centimeters with kilograms.
What is the BMI requirement for egg donors?
Egg donor screening uses a range rather than a ceiling: BMI 18 to 30. Both ends matter, because egg retrieval outcomes and anesthesia safety are affected at the low end as well as the high end.
Why does BMI matter in surrogacy screening at all?
BMI outside the screening range is associated with higher rates of gestational diabetes, preeclampsia, and surgical delivery, and with lower embryo transfer success. The threshold exists to protect the carrier first and the pregnancy second. It is a population-level filter, not a judgment about any individual.
My BMI is above the range. Can I still apply?
Applicants above the ceiling are commonly asked to re-apply once they reach the screening range, and many do. The calculator shows the weight that corresponds to BMI 35 at your height so the gap is a concrete number rather than an abstraction. Nothing about a single application closes the door permanently.
Is BMI the only thing that decides eligibility?
No. Age, at least one prior healthy birth, number of prior deliveries and C-sections, medication history, state of residence, support system, and psychological and background screening all carry weight. BMI is one filter early in the process, not the decision.
Close to the line? Apply anyway.
A coordinator can review your whole medical picture and tell you where you stand.