Earliest Pregnancy Test Calculator
Implantation usually happens 6 to 12 days after ovulation. Enter your ovulation date to see when a test can first turn positive and when it is most reliable.
Enter your details above and the result will appear here.
How to use
- Enter the date you ovulated (or your best estimate).
- Read the earliest test date and the more reliable dates.
- Retest if an early test is negative but your period has not arrived.
Note
Sensitive tests can sometimes detect pregnancy from about 10 days past ovulation (DPO), but accuracy is much higher from 12 to 14 DPO, around a missed period. An early negative result can change — test again in 2 to 3 days. Estimate only — not medical advice.