• Step One

    Welcome to Contacts1st.com's PD Measurement Tool!

    To take your PD-ready photo you'll need a few items. Grab your camera and a card with a magnetic stripe. This could include a library card, gift card or credit card!

  • Step Two

    Take a photo of your face with the card under your nose. The card's magnetic stripe should be visible to get the best measurement. Once you take the photo, drag and drop it on the marked position.

  • Step Three

    Press the "Measure PD" Button and it will begin the measurement process. First mark your left and right eyes. This will fix the scale and center your face on the page. Then click the left and right side of the magnetic stripe - this gives us a standard unit of measurement to get your PD. That's it! You'll see your approximate PD at the top right.


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PD MEASURE© BY Contacts1st.com
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Our PD Measurement tool does not work in Internet Explorer version 9 and below. Please consider upgrading or using another browser to access this page. Alternatively, you can use our manual method to measure your PD using the linked file below.

Download PD Ruler

How to use our PD measurement tool.

Step 1

Grab a regular card with a magnetic stripe on the back. Student IDs, credit cards and gift cards work well as measurement tools.

Step 2

Place the card under your nose and try to keep its distance from the camera the same as your eyes. Snap the picture and drop it on the marked area.

Step 3

Click "Measure PD" and begin by marking your left and right eyes. The image will resize and center after which you can mark the left and right side of the magnetic stripe. Your PD will be shown at the top right!

Prefer to measure yourself?

We also offer a printable PD ruler for your use. Just follow the instructions and you're good to go!

Download PD Ruler