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Pillar 3 β€’ Biometric Diagnostics

DV Lottery Head Ratio Checker

Verify that chin-to-crown height measures between 50% and 69% and eye baseline falls between 56% and 69% with draggable biometric calipers.

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Select photo to verify head ratio

Measures chin, crown, and eye level against State Department tolerances

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The Exact Mathematics of the 50% to 69% Head Height Rule

US State Department specifications require that in a 600Γ—600 pixel square photograph:

Photos taken with smartphones often violate these boundaries because wide-angle front-facing lenses create perspective distortion that elongates foreheads or pushes chin baselines below 50%. Using our on-screen measurement calipers verifies your photo before submitting it to the official portal.

Frequently Asked Questions

What is the 50% to 69% head height ratio rule for the DV Lottery?

The State Department mandates that on a 600x600 pixel photo, the vertical distance from the bottom of the chin to the top of the hair must measure between 300 pixels (50%) and 414 pixels (69%).

Where should the eyes be positioned vertically in a DV photo?

The eye level baseline must sit between 56% and 69% (336 to 414 pixels) from the bottom of the image.