Pregnancy Test Date Calculator
The best day to take a pregnancy test. Free, private and instant.
How to use the Pregnancy Test Date
- Pick first day of your last period.
- Enter average cycle length (days).
- Choose luteal phase (ovulation to next period): 10 days, 11 days, 12 days, 13 days and more.
- Press Calculate to get an instant result with a colour scale, chart and plain-English explanation.
About the Pregnancy Test Date
This calculator tells you when a home pregnancy test is likely to be accurate, based on your ovulation date. Tests can turn positive about 10 days after ovulation, but waiting until the day after your missed period is far more reliable.
Also known as: when to take a pregnancy test, pregnancy test calculator, earliest pregnancy test date, how soon can I test.
Worked example
Dates in this example are worked out as if today were 5 Nov 2026.
- First day of your last period: 22 Oct 2026
- Average cycle length: 28 days
- Luteal phase (ovulation to next period): 14 days (typical)
Days until the best test day: 15 days (From 20 Nov 2026). For the most reliable result, take a urine test from the day after your missed period, 20 Nov 2026. Sensitive tests can show a positive from about 15 Nov 2026, but a negative that early may be wrong.
- Ovulation: 5 Nov 2026
- Earliest test (10 DPO): 15 Nov 2026
- Period due: 19 Nov 2026
- Best day to test: 20 Nov 2026
Formula and cut-offs
Ovulation = last period + cycle length - 14. Earliest test = ovulation + 10 days. Best test day = day after the period is due. Detection rates by days past ovulation are approximate.
Frequently asked questions
How soon can I take a pregnancy test?
Some sensitive tests can detect pregnancy about 10 days after ovulation, but results are most reliable from the first day of a missed period.
Why is my test negative but my period is late?
You may have tested too early or ovulated later. Retest after 3 days, and see a doctor if your period is more than a week late.
When is the best time of day to test?
First-morning urine has the highest hCG concentration.
Sources and references
Written and checked by the MediHub editorial team against the sources above. Read how we build and review our calculators.
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Last updated . This calculator is for education only and is not medical advice. See the medical disclaimer.