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BMI Calculator for Fertility

Understanding your BMI can help you prepare for fertility treatment and pregnancy.

Use this calculator to get a general indication of whether your weight falls within a range commonly considered suitable for treatment planning.

Disclaimer: Every person, lifestyle and circumstances are different. You must not rely on this calculator as a substitute for medical diagnosis or advice from a healthcare professional.

Your BMI Result

10
18.5
25
30
35
50
17
Under
Healthy
Over
Obese I
Obese II+
BMI

17

Underweight

Being underweight can disrupt hormone production and suppress ovulation. Low body fat reduces oestrogen levels, which may cause irregular periods and affect egg quality. Reaching a healthy BMI before starting treatment can significantly improve your chances.

Treatment eligibility based on your BMI
IVF Treatment
BMI 18-40
Not in range
Egg Freezing
BMI 18-40
Not in range
ISCI
BMI 18-40
Not in range
IUI
BMI 18-40
Not in range
Assisted Conception
BMI up to 40
Not in range
instant estimate

How Does BMI Affect Your Fertility?

How BMI Influences Fertility Treatment
BMI Guidance for Fertility Treatments at Plan Your Baby
Individual Assessment and Treatment Eligibility
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Need Guidance After Your BMI Result?

Our team can help you plan your next steps, whatever your BMI result.

Your next steps

Explore Your Treatment Options

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Discuss Your IVF Timeline

Understanding your estimated due date is only one part of your journey. A consultation helps review your treatment history, pregnancy planning needs, and next clinical steps with structured medical guidance.

Learn about IVF
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Explore Assistance with Conception

Non-invasive fertility treatment may be appropriate before or alongside IVF, depending on your clinical profile. Our team can help you understand whether this pathway aligns with your fertility goals and treatment history.

Explore options
Information

Frequently Asked Questions

read patient stories

What is a healthy BMI for fertility treatment?

Can I still have IVF with a BMI over 35?

How does being underweight affect fertility?

What should I do if my BMI is outside the recommended range?

Does BMI affect male fertility too?

Is BMI the only factor considered for treatment eligibility?

read patient stories

Book Your Free Consultation

Take the first step towards parenthood today. Our expert team is ready to guide you through your fertility journey with personalized care and support.

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Summer Offer

Start your fertility journey with Plan Your Baby and receive:

£500 off IVF
£500 off Egg Freezing
£75 off Assistance with Conception
Discount applies when treatment starts within three months of your consultation. Use code SUMMER2026 when you begin treatment.
Offer available for consultations booked by 31 August.

Book a Call

Choose suitable option

Initial Free Consultation

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Speak to our senior nurse or fertility coordinator

15 min online video consultation

Initial guidance on our approach and treatments

Treatment options overview and next steps

Price

£0

Price

£0

recommended

Fertility Doctor consultation

Select doctor
Select doctor

Included:

30–45 min online video consultation

Review of your medical history and personal fertility goals

Expert guidance on all available treatment options

Personalised treatment plan

Price

£125

Book a Call

Choose suitable option

Select doctor
Select doctor

Included:

45 min online video consultation

Review of your medical history and personal fertility goals

Expert guidance on all available treatment options

Personalised treatment plan

Price

£125

£300

Book a Call

Choose suitable option

Initial Free Consultation

Smiling woman with glasses and long blonde hair wearing a white collared shirt against a light background.

Speak to our senior nurse or fertility coordinator

15 min online video consultation

Initial guidance on our approach and treatments

Treatment options overview and next steps

Price

£0

Price

£0

recommended

Medical Director Consultation

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Dr Sami Almusawa

Medical Director and Leading Fertility Consultant

Included:

45 min online video consultation

Review of your medical history and personal fertility goals

Expert guidance on all available treatment options

Personalised treatment plan

Price

£118.75 £125

5% off

Book a Call

Choose suitable option

Initial Free Consultation

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Free consultation with our speciality doctor

15 min online video consultation

Initial guidance on our approach and treatments

Treatment options overview and next steps

Price

£0

Price

£0

recommended

Medical Director Consultation

Portrait of a woman wearing a colorful floral hijab and a light beige top against a white background.

Dr. Nora Sahly

Speciality Doctor in Fertility, Sexual and Reproductive Health

Included:

45 min online video consultation

Review of your medical history and personal fertility goals

Expert guidance on all available treatment options

Personalised treatment plan

Price

£125