Pregnancy MetricsPregnancy & preconception calculators

Pregnancy Test Calculator

Choose the timing information you know to estimate when a home pregnancy test may be more informative.

What information do you have?

Select one source to show its matching field.

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How test timing is estimated

Use an expected period directly; last period plus usual cycle length derives one. A well-supported ovulation date or current DPO gives the existing 12–15 DPO reference window. Recent sex gives a conservative 21-day reference. These are timing references, not a way to confirm pregnancy or infer implantation.

Read the Trying, Ovulation and Pregnancy Test Timing Guide or our methodology and sources for limits and treatment-specific context.