When Can I Take a Pregnancy Test? Calculator by DPO
Find your earliest reliable test date and see the odds of a positive result for every day past ovulation, adjusted for your test's sensitivity.
Open tool →Tools
Free interactive calculators to help you track your cycle, ovulation, and fertile window.
Ovulation & Period Calculator — Track Your Cycle
Estimate your fertile window, predict ovulation dates, and better time your conception efforts.
Open tool →
Pregnancy Test Inverter — Reveal Faint Lines
Upload a photo of your test and instantly invert the colors to make barely-visible faint lines stand out. 100% private — nothing leaves your browser.
Open tool →