Home / Calculators / Fertility assessment / BMI before treatment
Every calculator in one place, free and with no sign-up. Results show instantly — we don't hide them behind a form. Each one explains what the number means, where the reference ranges come from, and what it cannot tell you.
A calculator sees three or four figures. A specialist sees your history, your scans, your partner's results, and how you actually responded to treatment. If you're between cycles, changing clinics, or something in your results doesn't add up, a second opinion is the fastest way to find out whether anything would be done differently.
Free first consultation. No obligation to start treatment, and it doesn't affect your care at your current clinic.
These tools provide general information and are not a diagnosis or a substitute for assessment by a qualified clinician. Reference ranges and sources are stated on each calculator. Predictive estimates describe groups of people and cannot predict an individual outcome.
A calculator sees three or four figures. A specialist sees your history, your scans, your partner's results, and how you actually responded to treatment. If you're between cycles, changing clinics, or something in your results doesn't add up, a second opinion is the fastest way to find out whether anything would be done differently.
Free first consultation. No obligation to start treatment, and it doesn't affect your care at your current clinic.
How BMI is used in treatment planning, and why unit thresholds vary.
Exact calculationArithmetic on the numbers you enter. If your inputs are right, this figure is right.
BMI is weight in kilograms divided by height in metres squared. Fertility units use it mainly for medication dosing and anaesthetic safety at egg retrieval; access thresholds vary by unit and some bodies apply lower thresholds for South Asian populations.
Source — Standard WHO BMI categories. Access thresholds are set by individual units and vary considerably.
That falls in the 18.5–25 band.
Your result of 23.9 kg/m² sits in the highlighted band. Bands are reference points used alongside clinical findings — not a diagnosis.
Within the standard range used by most units.
Standard WHO BMI categories. Access thresholds are set by individual units and vary considerably.
Highlighted is the stage this measurement belongs to. It is a map of the process, not a schedule — timings vary by protocol and by clinic.
It is a crude one. It does not distinguish muscle from fat and performs differently across populations — several bodies use lower thresholds for South Asian populations. It is used because it is simple and reproducible, not because it is precise.
It depends entirely on the unit. Thresholds are usually set for anaesthetic safety at retrieval rather than as a judgement about outcomes. Ask what the policy is before you plan around it.
Both, though less than most people assume. The larger effect is practical — medication dosing and anaesthetic safety at retrieval, which is why access thresholds exist. The effect on outcomes is real but modest compared with age.
A calculator sees three or four figures. A specialist sees your history, your scans, your partner's results, and how you actually responded to treatment. If you're between cycles, changing clinics, or something in your results doesn't add up, a second opinion is the fastest way to find out whether anything would be done differently.
Free first consultation. No obligation to start treatment, and it doesn't affect your care at your current clinic.
BMI thresholds for treatment access are set by individual units and vary. Some bodies apply lower thresholds for South Asian populations. Nothing here is a diagnosis or a substitute for assessment by a clinician.
A calculator gives you a number. These explain what it means, and what it does not.
Comparing centres? See every ART-registered fertility clinic in Bangalore, scored on the same five signals.
