How would you like to find your mask fit?

Choose automatic camera measuring or follow the manual ruler guide below

Recommended
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Auto Camera Measuring

Point your front camera at your face. Our tool measures you automatically in seconds, with no ruler needed.

  • ✓ Takes about 30 seconds
  • ✓ Works on phone or desktop
  • ✓ Get instant mask recommendations
Measure Yourself
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Manual Ruler Guide

Prefer to measure yourself with a ruler or tape? Follow our step-by-step guide below.

  • ✓ No camera needed
  • ✓ Works anywhere
  • ✓ Fine-tune with sliders
Measure eye width

A Eye Width

Measure from the outer corner of one eye to the outer corner of the other in a straight line. Use a ruler, soft tape, or even a phone charger cable (then measure the cable against a ruler). Keep it flat against your face.

in
Measure mask height

B Mask Height

Measure from just above your eyebrow line straight down to just below your nose. Use a ruler, soft tape, or phone charger cable. This is the vertical space where the mask and silicone skirt will sit.

in
Measure head circumference

C Head Circumference

Wrap a soft tape, string, or phone charger cable around your head above your ears and eyebrows, like measuring for a hat. Then measure the length against a ruler. This tells us how the strap and silicone skirt will seal around your face.

in
Nose pocket sizing

D Nose Size

Some masks have a narrower nose pocket. Selecting your nose size helps us rule out masks that may dig in or feel uncomfortable. If you're unsure, Medium is a safe choice.

Your Measurements

Fine-tune with the sliders, or go back to re-enter.

Why head size matters: If your face says Small but your head is Medium-Large, the smaller mask strap may not seal properly. We will show both options with notes.

Your Mask Recommendations

Enter your measurements and we will find the best masks for you.

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About the measurements
We measured the relaxed inner seal and the gently stretched outer seal to give a realistic Min/Max window. Your goal is to sit comfortably inside that window, especially on width, so the mask seals without over-tightening the strap.
Remember to keep the measuring device straight without bending around the cxontour of your face.
Lens choice comes after fit
Pick your frame size first. Then choose lens power for your diving mask with prescription lenses using the lens calculator (find below):

Use Our Free Underwater Lens Calculator Tool

you vision changes underwater, we created a tool to help you find the best lens strength based on your vision.

Want to find your perfect fit?

FREE Find My Mask Quiz
Answer 5 questions and we will recommend you the best fit.