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Check your test's packaging — lower numbers mean more sensitive.
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Pregnancy test calculator
Guidance on when a urine pregnancy test is likely to detect pregnancy, based on timing and test sensitivity.
Estimate, not a diagnosis. This tool gives an educational estimate based on the numbers you enter. It cannot account for your individual health history — consult a healthcare professional for anything clinical.
How this helps
Test sensitivity indicates the minimum hCG level a test can detect. Earlier after ovulation, hCG may still be below that level even if conception occurred — this tool gives heuristic guidance, not a definitive probability.
Limitations
Brand variation and individual hCG rise rates mean repeat testing is often advised. Contact a clinician for concerns or quantitative hCG monitoring.
Related reading
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Frequently asked questions
How soon after ovulation can I take a pregnancy test?
Most tests become reliable around 12-14 days after ovulation, once hCG has had time to rise above the test’s detection threshold. Testing earlier increases the chance of a false negative even if conception occurred.
What does test sensitivity mean?
It’s the minimum hCG concentration (in mIU/mL) a test can detect — lower numbers mean a more sensitive test that can pick up pregnancy earlier. Check your specific test’s packaging for its sensitivity.
Why might a test be negative even if I am pregnant?
Testing too early, before hCG has risen above the test’s sensitivity threshold, is the most common reason. Diluted urine, incorrect test use, or an unusually slow hCG rise can also produce a false negative.