Pregnancy Test Calculator

Find out the best day to take a pregnancy test based on your cycle.

Pregnancy Test Calculator

When to take a Pregnancy Test

Find the best day to take a pregnancy test based on your cycle.

Your Cycle

Enter the first day of your last period.

Cycle Length

Input your average cycle length.

Get Date

We'll tell you the earliest day a test can give a reliable result.

Common Questions

Can I test before my missed period?

Some early response tests can detect hCG up to 6 days before your missed period, but accuracy is lower.

What is a false negative?

When you are pregnant but the test is negative because you tested too early.

Related Guides

Go deeper with our evidence-based guides.

View all articles →

hCG Doubling Time and Levels by Week, Explained

What your beta hCG number means, how doubling time is calculated, typical ranges by week and why the trend matters more than a single result.

Implantation Bleeding vs Period: Timing, Signs and Differences

How to tell implantation bleeding from a period: when it happens, what it looks like, when a pregnancy test can show a result and when to get medical help.

When to Take a Pregnancy Test: The Earliest Reliable Day

When a home pregnancy test gives a reliable result, how early you can test, what to do after a negative result and how to work it out with irregular cycles.

View all articles →

Pregnancy Test Calculator