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Fertility and IVF calculators

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.

How these differ from other calculators

Common questions

Second opinion

Bring your numbers to someone who can see the rest

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.

IVF success and prediction

Estimates of outcome. Every one of these gives a range rather than a single figure, because that is what the data supports.

Why every honest estimate is a range

Prediction models exist and are useful, but they describe groups. Two people with identical inputs routinely have different outcomes, and no model sees ovarian response, embryo quality, or the partner’s results — the things that matter most.

The other reason to distrust single figures: clinics quote different things. Per cycle started versus per transfer, one cycle versus cumulative, all patients versus your age band. Ask specifically for live birth per cycle started, for your age band, with the number of cycles behind it.

Second opinion

Bring your numbers to someone who can see the rest

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.

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Enter your values
Result

Where this sits

Expected Borderline Below expected Worth discussing

Or ask someone
  • A free first consultation covers this properly, with your actual results rather than an estimate
  • Both partners assessed together — male factor is involved in roughly half of cases
Second opinion

Bring your numbers to someone who can see the rest

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.

Get a second opinion › Message us on WhatsApp

Read next

What these tools measure, explained in full.

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